Merge pull request #321 from esensar/feature/197-unit-converter

Add unit converter

app/src/main/AndroidManifest.xml

@@ -34,6 +34,14 @@
             android:name=".activities.MainActivity"
             android:exported="false" />
 
+        <activity
+            android:name=".activities.UnitConverterActivity"
+            android:exported="false" />
+
+        <activity
+            android:name=".activities.UnitConverterPickerActivity"
+            android:exported="false" />
+
         <activity
             android:name=".activities.WidgetConfigureActivity"
             android:exported="true"

app/src/main/kotlin/com/simplemobiletools/calculator/activities/MainActivity.kt

@@ -137,6 +137,7 @@ class MainActivity : SimpleActivity(), Calculator {
             when (menuItem.itemId) {
                 R.id.history -> showHistory()
                 R.id.more_apps_from_us -> launchMoreAppsFromUsIntent()
+                R.id.unit_converter -> launchUnitConverter()
                 R.id.settings -> launchSettings()
                 R.id.about -> launchAbout()
                 else -> return@setOnMenuItemClickListener false
@@ -174,6 +175,11 @@ class MainActivity : SimpleActivity(), Calculator {
         }
     }
 
+    private fun launchUnitConverter() {
+        hideKeyboard()
+        startActivity(Intent(applicationContext, UnitConverterPickerActivity::class.java))
+    }
+
     private fun launchSettings() {
         hideKeyboard()
         startActivity(Intent(applicationContext, SettingsActivity::class.java))

app/src/main/kotlin/com/simplemobiletools/calculator/activities/UnitConverterActivity.kt

@@ -0,0 +1,157 @@
+package com.simplemobiletools.calculator.activities
+
+import android.content.res.Configuration
+import android.os.Bundle
+import android.view.View
+import android.view.WindowManager
+import androidx.core.content.res.ResourcesCompat
+import com.simplemobiletools.calculator.R
+import com.simplemobiletools.calculator.databinding.ActivityUnitConverterBinding
+import com.simplemobiletools.calculator.extensions.config
+import com.simplemobiletools.calculator.extensions.updateViewColors
+import com.simplemobiletools.calculator.helpers.COMMA
+import com.simplemobiletools.calculator.helpers.CONVERTER_STATE
+import com.simplemobiletools.calculator.helpers.DOT
+import com.simplemobiletools.calculator.helpers.converters.Converter
+import com.simplemobiletools.commons.extensions.getProperTextColor
+import com.simplemobiletools.commons.extensions.performHapticFeedback
+import com.simplemobiletools.commons.extensions.viewBinding
+import com.simplemobiletools.commons.helpers.LOWER_ALPHA_INT
+import com.simplemobiletools.commons.helpers.MEDIUM_ALPHA_INT
+import com.simplemobiletools.commons.helpers.NavigationIcon
+
+class UnitConverterActivity : SimpleActivity() {
+    companion object {
+        const val EXTRA_CONVERTER_ID = "converter_id"
+    }
+
+    private val binding by viewBinding(ActivityUnitConverterBinding::inflate)
+    private var vibrateOnButtonPress = true
+    private lateinit var converter: Converter
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        isMaterialActivity = true
+        super.onCreate(savedInstanceState)
+        setContentView(binding.root)
+
+        if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
+            binding.unitConverterToolbar.inflateMenu(R.menu.converter_menu)
+            setupOptionsMenu()
+        }
+
+        updateMaterialActivityViews(binding.unitConverterCoordinator, null, useTransparentNavigation = false, useTopSearchMenu = false)
+        setupMaterialScrollListener(binding.nestedScrollview, binding.unitConverterToolbar)
+
+        val converter = Converter.ALL.getOrNull(intent.getIntExtra(EXTRA_CONVERTER_ID, 0))
+
+        if (converter == null) {
+            finish()
+            return
+        }
+        this.converter = converter
+
+        binding.viewUnitConverter.btnClear.setVibratingOnClickListener {
+            binding.viewUnitConverter.viewConverter.root.deleteCharacter()
+        }
+        binding.viewUnitConverter.btnClear.setOnLongClickListener {
+            binding.viewUnitConverter.viewConverter.root.clear()
+            true
+        }
+
+        getButtonIds().forEach {
+            it.setVibratingOnClickListener { view ->
+                binding.viewUnitConverter.viewConverter.root.numpadClicked(view.id)
+            }
+        }
+
+        binding.viewUnitConverter.viewConverter.root.setConverter(converter)
+        binding.unitConverterToolbar.setTitle(converter.nameResId)
+
+        if (savedInstanceState != null) {
+            savedInstanceState.getBundle(CONVERTER_STATE)?.also {
+                binding.viewUnitConverter.viewConverter.root.restoreFromSavedState(it)
+            }
+        }
+    }
+
+    private fun setupOptionsMenu() {
+        binding.unitConverterToolbar.setOnMenuItemClickListener { menuItem ->
+            when (menuItem.itemId) {
+                R.id.swap_units -> binding.viewUnitConverter.viewConverter.root.switch()
+                else -> return@setOnMenuItemClickListener false
+            }
+            return@setOnMenuItemClickListener true
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+
+        setupToolbar(binding.unitConverterToolbar, NavigationIcon.Arrow)
+        binding.viewUnitConverter.viewConverter.root.updateColors()
+        binding.viewUnitConverter.converterHolder.let { updateViewColors(it, getProperTextColor()) }
+
+        if (config.preventPhoneFromSleeping) {
+            window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        }
+
+        setupDecimalSeparator()
+
+        vibrateOnButtonPress = config.vibrateOnButtonPress
+
+        binding.viewUnitConverter.apply {
+            arrayOf(btnClear, btnDecimal).forEach {
+                it.background = ResourcesCompat.getDrawable(resources, com.simplemobiletools.commons.R.drawable.pill_background, theme)
+                it.background?.alpha = MEDIUM_ALPHA_INT
+            }
+
+            arrayOf(btn0, btn1, btn2, btn3, btn4, btn5, btn6, btn7, btn8, btn9).forEach {
+                it.background = ResourcesCompat.getDrawable(resources, com.simplemobiletools.commons.R.drawable.pill_background, theme)
+                it.background?.alpha = LOWER_ALPHA_INT
+            }
+        }
+    }
+
+    override fun onPause() {
+        super.onPause()
+        if (config.preventPhoneFromSleeping) {
+            window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        }
+    }
+
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        outState.putBundle(CONVERTER_STATE, binding.viewUnitConverter.viewConverter.root.saveState())
+    }
+
+    private fun checkHaptic(view: View) {
+        if (vibrateOnButtonPress) {
+            view.performHapticFeedback()
+        }
+    }
+
+    private fun getButtonIds() = binding.viewUnitConverter.run {
+        arrayOf(btnDecimal, btn0, btn1, btn2, btn3, btn4, btn5, btn6, btn7, btn8, btn9)
+    }
+
+    private fun View.setVibratingOnClickListener(callback: (view: View) -> Unit) {
+        setOnClickListener {
+            callback(it)
+            checkHaptic(it)
+        }
+    }
+
+    private fun setupDecimalSeparator() {
+        val decimalSeparator: String
+        val groupingSeparator: String
+        if (config.useCommaAsDecimalMark) {
+            decimalSeparator = COMMA
+            groupingSeparator = DOT
+        } else {
+            decimalSeparator = DOT
+            groupingSeparator = COMMA
+        }
+        binding.viewUnitConverter.viewConverter.root.updateSeparators(decimalSeparator, groupingSeparator)
+        binding.viewUnitConverter.btnDecimal.text = decimalSeparator
+    }
+}

app/src/main/kotlin/com/simplemobiletools/calculator/activities/UnitConverterPickerActivity.kt

@@ -0,0 +1,52 @@
+package com.simplemobiletools.calculator.activities
+
+import android.content.Intent
+import android.os.Bundle
+import android.view.WindowManager
+import com.simplemobiletools.calculator.R
+import com.simplemobiletools.calculator.adapters.UnitTypesAdapter
+import com.simplemobiletools.calculator.databinding.ActivityUnitConverterPickerBinding
+import com.simplemobiletools.calculator.extensions.config
+import com.simplemobiletools.calculator.helpers.converters.Converter
+import com.simplemobiletools.commons.extensions.viewBinding
+import com.simplemobiletools.commons.helpers.NavigationIcon
+import com.simplemobiletools.commons.views.AutoGridLayoutManager
+
+class UnitConverterPickerActivity : SimpleActivity() {
+    private val binding by viewBinding(ActivityUnitConverterPickerBinding::inflate)
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        isMaterialActivity = true
+        super.onCreate(savedInstanceState)
+        setContentView(binding.root)
+        updateMaterialActivityViews(binding.unitConverterPickerCoordinator, null, useTransparentNavigation = false, useTopSearchMenu = false)
+        setupMaterialScrollListener(binding.unitTypesGrid, binding.unitConverterPickerToolbar)
+
+        binding.unitTypesGrid.layoutManager = AutoGridLayoutManager(this, resources.getDimensionPixelSize(R.dimen.unit_type_size))
+        binding.unitTypesGrid.adapter = UnitTypesAdapter(this, Converter.ALL) {
+            Intent(this, UnitConverterActivity::class.java).apply {
+                putExtra(UnitConverterActivity.EXTRA_CONVERTER_ID, it)
+                startActivity(this)
+            }
+        }
+
+        binding.unitConverterPickerToolbar.setTitle(R.string.unit_converter)
+    }
+
+    override fun onResume() {
+        super.onResume()
+
+        setupToolbar(binding.unitConverterPickerToolbar, NavigationIcon.Arrow)
+
+        if (config.preventPhoneFromSleeping) {
+            window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        }
+    }
+
+    override fun onPause() {
+        super.onPause()
+        if (config.preventPhoneFromSleeping) {
+            window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/calculator/activities/WidgetConfigureActivity.kt

@@ -12,7 +12,6 @@ import android.widget.TextView
 import com.simplemobiletools.calculator.R
 import com.simplemobiletools.calculator.databinding.WidgetConfigBinding
 import com.simplemobiletools.calculator.extensions.config
-import com.simplemobiletools.calculator.extensions.viewBinding
 import com.simplemobiletools.calculator.helpers.MyWidgetProvider
 import com.simplemobiletools.commons.dialogs.ColorPickerDialog
 import com.simplemobiletools.commons.dialogs.FeatureLockedDialog

app/src/main/kotlin/com/simplemobiletools/calculator/adapters/UnitTypesAdapter.kt

@@ -0,0 +1,50 @@
+package com.simplemobiletools.calculator.adapters
+
+import android.graphics.drawable.LayerDrawable
+import android.graphics.drawable.RippleDrawable
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.content.res.ResourcesCompat
+import androidx.recyclerview.widget.RecyclerView
+import com.simplemobiletools.calculator.R
+import com.simplemobiletools.calculator.activities.SimpleActivity
+import com.simplemobiletools.calculator.databinding.ItemUnitTypeBinding
+import com.simplemobiletools.calculator.extensions.getStrokeColor
+import com.simplemobiletools.calculator.helpers.converters.Converter
+import com.simplemobiletools.commons.extensions.*
+
+class UnitTypesAdapter (val activity: SimpleActivity, val items: List<Converter>, val itemClick: (id: Int) -> Unit) : RecyclerView.Adapter<UnitTypesAdapter.ViewHolder>() {
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder =
+        ViewHolder(ItemUnitTypeBinding.inflate(activity.layoutInflater, parent, false))
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val item = items[position]
+        holder.bindView(item, position)
+    }
+
+    override fun getItemCount() = items.size
+
+    inner class ViewHolder(private val binding: ItemUnitTypeBinding) : RecyclerView.ViewHolder(binding.root) {
+        fun bindView(item: Converter, id: Int): View {
+            itemView.apply {
+                binding.unitImage.setImageResource(item.imageResId)
+                binding.unitLabel.setText(item.nameResId)
+
+                val rippleBg = ResourcesCompat.getDrawable(resources, R.drawable.unit_type_background, context.theme) as RippleDrawable
+                val layerDrawable = rippleBg.findDrawableByLayerId(R.id.background_holder) as LayerDrawable
+                layerDrawable.findDrawableByLayerId(R.id.background_stroke).applyColorFilter(context.getStrokeColor())
+                layerDrawable.findDrawableByLayerId(R.id.background_shape).applyColorFilter(context.getProperBackgroundColor().darkenColor(2))
+                binding.unitBackground.background = rippleBg
+
+                binding.unitLabel.setTextColor(activity.getProperTextColor())
+                binding.unitImage.applyColorFilter(activity.getProperPrimaryColor())
+
+                setOnClickListener {
+                    itemClick(id)
+                }
+            }
+
+            return itemView
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/calculator/extensions/Binding.kt

@@ -1,10 +0,0 @@
-package com.simplemobiletools.calculator.extensions
-
-import android.app.Activity
-import android.view.LayoutInflater
-import androidx.viewbinding.ViewBinding
-
-inline fun <T : ViewBinding> Activity.viewBinding(crossinline bindingInflater: (LayoutInflater) -> T) =
-    lazy(LazyThreadSafetyMode.NONE) {
-        bindingInflater.invoke(layoutInflater)
-    }

app/src/main/kotlin/com/simplemobiletools/calculator/extensions/Context.kt

@@ -4,6 +4,7 @@ import android.appwidget.AppWidgetManager
 import android.content.ComponentName
 import android.content.Context
 import android.content.Intent
+import android.graphics.Color
 import android.net.Uri
 import android.os.Build
 import android.provider.Settings
@@ -15,6 +16,9 @@ import com.simplemobiletools.calculator.databases.CalculatorDatabase
 import com.simplemobiletools.calculator.helpers.Config
 import com.simplemobiletools.calculator.helpers.MyWidgetProvider
 import com.simplemobiletools.calculator.interfaces.CalculatorDao
+import com.simplemobiletools.commons.extensions.getProperBackgroundColor
+import com.simplemobiletools.commons.extensions.isUsingSystemDarkTheme
+import com.simplemobiletools.commons.extensions.lightenColor
 import com.simplemobiletools.commons.extensions.showErrorToast
 
 val Context.config: Config get() = Config.newInstance(applicationContext)
@@ -64,3 +68,20 @@ fun Context.launchChangeAppLanguageIntent() {
         }
     }
 }
+
+fun Context.getStrokeColor(): Int {
+    return if (config.isUsingSystemTheme) {
+        if (isUsingSystemDarkTheme()) {
+            resources.getColor(com.simplemobiletools.commons.R.color.md_grey_800, theme)
+        } else {
+            resources.getColor(com.simplemobiletools.commons.R.color.md_grey_400, theme)
+        }
+    } else {
+        val lighterColor = getProperBackgroundColor().lightenColor()
+        if (lighterColor == Color.WHITE || lighterColor == Color.BLACK) {
+            resources.getColor(com.simplemobiletools.commons.R.color.divider_grey, theme)
+        } else {
+            lighterColor
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/Constants.kt

@@ -30,6 +30,8 @@ const val COMMA = ","
 
 // shared prefs
 const val USE_COMMA_AS_DECIMAL_MARK = "use_comma_as_decimal_mark"
+
+// calculator state
 const val RES = "res"
 const val PREVIOUS_CALCULATION = "previousCalculation"
 const val LAST_KEY = "lastKey"
@@ -38,3 +40,9 @@ const val BASE_VALUE = "baseValue"
 const val SECOND_VALUE = "secondValue"
 const val INPUT_DISPLAYED_FORMULA = "inputDisplayedFormula"
 const val CALCULATOR_STATE = "calculatorState"
+
+// converter state
+const val TOP_UNIT = "top_unit"
+const val BOTTOM_UNIT = "bottom_unit"
+const val CONVERTER_VALUE = "converter_value"
+const val CONVERTER_STATE = "converter_state"

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/AreaConverter.kt

@@ -0,0 +1,85 @@
+package com.simplemobiletools.calculator.helpers.converters
+
+import com.simplemobiletools.calculator.R
+
+object AreaConverter : Converter {
+    override val nameResId: Int = R.string.unit_area
+    override val imageResId: Int = R.drawable.ic_box_vector
+
+    sealed class Unit(nameResId: Int, symbolResId: Int, factor: Double) : Converter.Unit(nameResId, symbolResId, factor) {
+        data object SquareKilometer : Unit(
+            nameResId = R.string.unit_area_square_kilometer,
+            symbolResId = R.string.unit_area_square_kilometer_symbol,
+            factor = 1000000.0
+        )
+
+        data object SquareMeter : Unit(
+            nameResId = R.string.unit_area_square_meter,
+            symbolResId = R.string.unit_area_square_meter_symbol,
+            factor = 1.0
+        )
+
+        data object SquareCentimeter : Unit(
+            nameResId = R.string.unit_area_square_centimeter,
+            symbolResId = R.string.unit_area_square_centimeter_symbol,
+            factor = 0.0001
+        )
+
+        data object SquareMillimeter : Unit(
+            nameResId = R.string.unit_area_square_millimeter,
+            symbolResId = R.string.unit_area_square_millimeter_symbol,
+            factor = 0.000001
+        )
+
+        data object SquareMile : Unit(
+            nameResId = R.string.unit_area_square_mile,
+            symbolResId = R.string.unit_area_square_mile_symbol,
+            factor = 2_589_988.110336
+        )
+
+        data object SquareYard : Unit(
+            nameResId = R.string.unit_area_square_yard,
+            symbolResId = R.string.unit_area_square_yard_symbol,
+            factor = 0.83612736
+        )
+
+        data object SquareFoot : Unit(
+            nameResId = R.string.unit_area_square_foot,
+            symbolResId = R.string.unit_area_square_foot_symbol,
+            factor = 0.09290304
+        )
+
+        data object SquareInch : Unit(
+            nameResId = R.string.unit_area_square_inch,
+            symbolResId = R.string.unit_area_square_inch_symbol,
+            factor = 0.00064516
+        )
+
+        data object Acre : Unit(
+            nameResId = R.string.unit_area_acre,
+            symbolResId = R.string.unit_area_acre_symbol,
+            factor = 4_046.8564224
+        )
+
+        data object Hectare : Unit(
+            nameResId = R.string.unit_area_hectare,
+            symbolResId = R.string.unit_area_hectare_symbol,
+            factor = 10_000.0
+        )
+    }
+
+    override val units: List<Unit> = listOf(
+        Unit.SquareKilometer,
+        Unit.SquareMeter,
+        Unit.SquareCentimeter,
+        Unit.SquareMillimeter,
+        Unit.SquareMile,
+        Unit.SquareYard,
+        Unit.SquareFoot,
+        Unit.SquareInch,
+        Unit.Acre,
+        Unit.Hectare,
+    )
+    override val defaultTopUnit: Unit = Unit.SquareKilometer
+    override val defaultBottomUnit: Unit = Unit.SquareMeter
+}

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/Base.kt

@@ -0,0 +1,48 @@
+package com.simplemobiletools.calculator.helpers.converters
+
+import android.content.Context
+import com.simplemobiletools.calculator.R
+
+interface Converter {
+    companion object {
+        val ALL = listOf(
+            LengthConverter,
+            AreaConverter,
+            VolumeConverter,
+            MassConverter,
+            TemperatureConverter,
+            TimeConverter
+        )
+    }
+
+    val nameResId: Int
+    val imageResId: Int
+    val units: List<Unit>
+    val defaultTopUnit: Unit
+    val defaultBottomUnit: Unit
+
+    fun convert(from: ValueWithUnit<Unit>, to: Unit): ValueWithUnit<Unit> {
+        return ValueWithUnit(to.fromBase(from.unit.toBase(from.value)), to)
+    }
+
+    open class Unit(
+        val nameResId: Int,
+        val symbolResId: Int,
+        val factor: Double
+    ) {
+
+        open fun toBase(value: Double) = value * factor
+
+        open fun fromBase(value: Double) = value / factor
+
+        fun withValue(value: Double) = ValueWithUnit(value, this)
+
+        fun getNameWithSymbol(context: Context) = context.getString(
+            R.string.unit_name_with_symbol_format,
+            context.getString(nameResId),
+            context.getString(symbolResId)
+        )
+    }
+}
+
+data class ValueWithUnit<T : Converter.Unit>(val value: Double, val unit: T)

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/LengthConverter.kt

@@ -0,0 +1,127 @@
+package com.simplemobiletools.calculator.helpers.converters
+
+import com.simplemobiletools.calculator.R
+
+object LengthConverter : Converter {
+    override val nameResId: Int = R.string.unit_length
+    override val imageResId: Int = R.drawable.ic_height_vector
+
+    sealed class Unit(nameResId: Int, symbolResId: Int, factor: Double) : Converter.Unit(nameResId, symbolResId, factor) {
+        data object Kilometer : Unit(
+            nameResId = R.string.unit_length_kilometer,
+            symbolResId = R.string.unit_length_kilometer_symbol,
+            factor = 1000.0
+        )
+
+        data object Meter : Unit(
+            nameResId = R.string.unit_length_meter,
+            symbolResId = R.string.unit_length_meter_symbol,
+            factor = 1.0
+        )
+
+        data object Centimeter : Unit(
+            nameResId = R.string.unit_length_centimeter,
+            symbolResId = R.string.unit_length_centimeter_symbol,
+            factor = 0.01
+        )
+
+        data object Millimeter : Unit(
+            nameResId = R.string.unit_length_millimeter,
+            symbolResId = R.string.unit_length_millimeter_symbol,
+            factor = 0.001
+        )
+
+        data object Micrometer : Unit(
+            nameResId = R.string.unit_length_micrometer,
+            symbolResId = R.string.unit_length_micrometer_symbol,
+            factor = 0.000001
+        )
+
+        data object Nanometer : Unit(
+            nameResId = R.string.unit_length_nanometer,
+            symbolResId = R.string.unit_length_nanometer_symbol,
+            factor = 0.000000001
+        )
+
+        data object Angstrom : Unit(
+            nameResId = R.string.unit_length_angstrom,
+            symbolResId = R.string.unit_length_angstrom_symbol,
+            factor = 1e-10
+        )
+
+        data object Mile : Unit(
+            nameResId = R.string.unit_length_mile,
+            symbolResId = R.string.unit_length_mile_symbol,
+            factor = 1_609.344
+        )
+
+        data object Yard : Unit(
+            nameResId = R.string.unit_length_yard,
+            symbolResId = R.string.unit_length_yard_symbol,
+            factor = 0.9144
+        )
+
+        data object Foot : Unit(
+            nameResId = R.string.unit_length_foot,
+            symbolResId = R.string.unit_length_foot_symbol,
+            factor = 0.3048
+        )
+
+        data object Inch : Unit(
+            nameResId = R.string.unit_length_inch,
+            symbolResId = R.string.unit_length_inch_symbol,
+            factor = 0.0254
+        )
+
+        data object Fathom : Unit(
+            nameResId = R.string.unit_length_fathom,
+            symbolResId = R.string.unit_length_fathom_symbol,
+            factor = 1.852
+        )
+
+        data object NauticalMile : Unit(
+            nameResId = R.string.unit_length_nautical_mile,
+            symbolResId = R.string.unit_length_nautical_mile_symbol,
+            factor = 1_852.0
+        )
+
+        data object AstronomicalUnit : Unit(
+            nameResId = R.string.unit_length_astronomical_unit,
+            symbolResId = R.string.unit_length_astronomical_unit_symbol,
+            factor = 1.495979e+11
+        )
+
+        data object Parsec : Unit(
+            nameResId = R.string.unit_length_parsec,
+            symbolResId = R.string.unit_length_parsec_symbol,
+            factor = 3.0857e+16
+        )
+
+        data object LightYear : Unit(
+            nameResId = R.string.unit_length_light_year,
+            symbolResId = R.string.unit_length_light_year_symbol,
+            factor = 9.4607e+15
+        )
+    }
+
+    override val units: List<Unit> = listOf(
+        Unit.Kilometer,
+        Unit.Meter,
+        Unit.Centimeter,
+        Unit.Millimeter,
+        Unit.Micrometer,
+        Unit.Nanometer,
+        Unit.Angstrom,
+        Unit.Mile,
+        Unit.Yard,
+        Unit.Foot,
+        Unit.Inch,
+        Unit.Fathom,
+        Unit.NauticalMile,
+        Unit.AstronomicalUnit,
+        Unit.Parsec,
+        Unit.LightYear
+    )
+    override val defaultTopUnit: Unit = Unit.Kilometer
+    override val defaultBottomUnit: Unit = Unit.Meter
+}

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/MassConverter.kt

@@ -0,0 +1,114 @@
+package com.simplemobiletools.calculator.helpers.converters
+
+import com.simplemobiletools.calculator.R
+
+object MassConverter : Converter {
+    override val nameResId: Int = R.string.unit_mass
+    override val imageResId: Int = R.drawable.ic_scale_vector
+
+    sealed class Unit(nameResId: Int, symbolResId: Int, factor: Double) : Converter.Unit(nameResId, symbolResId, factor) {
+        data object Gram : Unit(
+            nameResId = R.string.unit_mass_gram,
+            symbolResId = R.string.unit_mass_gram_symbol,
+            factor = 0.001
+        )
+
+        data object Kilogram : Unit(
+            nameResId = R.string.unit_mass_kilogram,
+            symbolResId = R.string.unit_mass_kilogram_symbol,
+            factor = 1.0
+        )
+
+        data object Milligram : Unit(
+            nameResId = R.string.unit_mass_milligram,
+            symbolResId = R.string.unit_mass_milligram_symbol,
+            factor = 0.000001
+        )
+
+        data object Microgram : Unit(
+            nameResId = R.string.unit_mass_microgram,
+            symbolResId = R.string.unit_mass_microgram_symbol,
+            factor = 0.000000001
+        )
+
+        data object Tonne : Unit(
+            nameResId = R.string.unit_mass_tonne,
+            symbolResId = R.string.unit_mass_tonne_symbol,
+            factor = 1_000.0
+        )
+
+        data object Pound : Unit(
+            nameResId = R.string.unit_mass_pound,
+            symbolResId = R.string.unit_mass_pound_symbol,
+            factor = 0.45359237
+        )
+
+        data object Ounce : Unit(
+            nameResId = R.string.unit_mass_ounce,
+            symbolResId = R.string.unit_mass_ounce_symbol,
+            factor = 0.028349523125
+        )
+
+        data object Grain : Unit(
+            nameResId = R.string.unit_mass_grain,
+            symbolResId = R.string.unit_mass_grain_symbol,
+            factor = 0.00006479891
+        )
+
+        data object Dram : Unit(
+            nameResId = R.string.unit_mass_dram,
+            symbolResId = R.string.unit_mass_dram_symbol,
+            factor = 0.0017718451953125
+        )
+
+        data object Stone : Unit(
+            nameResId = R.string.unit_mass_stone,
+            symbolResId = R.string.unit_mass_stone_symbol,
+            factor = 6.35029318
+        )
+
+        data object LongTon : Unit(
+            nameResId = R.string.unit_mass_long_ton,
+            symbolResId = R.string.unit_mass_long_ton_symbol,
+            factor = 1_016.0469088
+        )
+
+        data object ShortTon : Unit(
+            nameResId = R.string.unit_mass_short_ton,
+            symbolResId = R.string.unit_mass_short_ton_symbol,
+            factor = 907.18474
+        )
+
+        data object Carat : Unit(
+            nameResId = R.string.unit_mass_carat,
+            symbolResId = R.string.unit_mass_carat_symbol,
+            factor = 0.0002051965483
+        )
+
+        data object CaratMetric : Unit(
+            nameResId = R.string.unit_mass_carat_metric,
+            symbolResId = R.string.unit_mass_carat_metric_symbol,
+            factor = 0.0002
+        )
+    }
+
+    override val units: List<Unit> = listOf(
+        Unit.Gram,
+        Unit.Kilogram,
+        Unit.Milligram,
+        Unit.Microgram,
+        Unit.Tonne,
+        Unit.Pound,
+        Unit.Ounce,
+        Unit.Grain,
+        Unit.Dram,
+        Unit.Stone,
+        Unit.LongTon,
+        Unit.ShortTon,
+        Unit.Carat,
+        Unit.CaratMetric,
+    )
+
+    override val defaultTopUnit: Unit = Unit.Pound
+    override val defaultBottomUnit: Unit = Unit.Kilogram
+}

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/TemperatureConverter.kt

@@ -0,0 +1,56 @@
+package com.simplemobiletools.calculator.helpers.converters
+
+import com.simplemobiletools.calculator.R
+
+object TemperatureConverter : Converter {
+    override val nameResId: Int = R.string.unit_temperature
+    override val imageResId: Int = R.drawable.ic_thermostat_vector
+
+    sealed class Unit(nameResId: Int, symbolResId: Int, factor: Double) : Converter.Unit(nameResId, symbolResId, factor) {
+
+        data object Celsius : Unit(
+            nameResId = R.string.unit_temperature_celsius,
+            symbolResId = R.string.unit_temperature_celsius_symbol,
+            factor = 1.0
+        ) {
+            const val KELVIN_OFFSET = 273.15
+
+            override fun toBase(value: Double): Double = value + KELVIN_OFFSET
+            override fun fromBase(value: Double): Double = value - KELVIN_OFFSET
+        }
+
+        data object Fahrenheit : Unit(
+            nameResId = R.string.unit_temperature_fahrenheit,
+            symbolResId = R.string.unit_temperature_fahrenheit_symbol,
+            factor = 9.0 / 5
+        ) {
+            private const val CELSIUS_OFFSET = 32
+
+            override fun toBase(value: Double): Double = Celsius.toBase((value - CELSIUS_OFFSET) / factor)
+
+            override fun fromBase(value: Double): Double = (Celsius.fromBase(value) * factor) + CELSIUS_OFFSET
+        }
+
+        data object Rankine : Unit(
+            nameResId = R.string.unit_temperature_rankine,
+            symbolResId = R.string.unit_temperature_rankine_symbol,
+            factor = 5.0 / 9
+        )
+
+        data object Kelvin : Unit(
+            nameResId = R.string.unit_temperature_kelvin,
+            symbolResId = R.string.unit_temperature_kelvin_symbol,
+            factor = 1.0
+        )
+    }
+
+    override val units: List<Unit> = listOf(
+        Unit.Celsius,
+        Unit.Fahrenheit,
+        Unit.Rankine,
+        Unit.Kelvin,
+    )
+
+    override val defaultTopUnit: Unit = Unit.Celsius
+    override val defaultBottomUnit: Unit = Unit.Kelvin
+}

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/TimeConverter.kt

@@ -0,0 +1,72 @@
+package com.simplemobiletools.calculator.helpers.converters
+
+import com.simplemobiletools.calculator.R
+
+object TimeConverter : Converter {
+    override val nameResId: Int = R.string.unit_time
+    override val imageResId: Int = com.simplemobiletools.commons.R.drawable.ic_clock_vector
+
+    sealed class Unit(nameResId: Int, symbolResId: Int, factor: Double) : Converter.Unit(nameResId, symbolResId, factor) {
+        companion object {
+            private const val MINUTE = 60.0
+            private const val HOUR = 60.0 * MINUTE
+            private const val DAY = HOUR * 24.0
+            private const val GREGORIAN_YEAR = DAY * 365.2425
+        }
+
+        data object Hour : Unit(
+            nameResId = R.string.unit_time_hour,
+            symbolResId = R.string.unit_time_hour_symbol,
+            factor = HOUR
+        )
+
+        data object Minute : Unit(
+            nameResId = R.string.unit_time_minute,
+            symbolResId = R.string.unit_time_minute_symbol,
+            factor = MINUTE
+        )
+
+        data object Second : Unit(
+            nameResId = R.string.unit_time_second,
+            symbolResId = R.string.unit_time_second_symbol,
+            factor = 1.0
+        )
+
+        data object Millisecond : Unit(
+            nameResId = R.string.unit_time_millisecond,
+            symbolResId = R.string.unit_time_millisecond_symbol,
+            factor = 0.001
+        )
+
+        data object Day : Unit(
+            nameResId = R.string.unit_time_day,
+            symbolResId = R.string.unit_time_day_symbol,
+            factor = DAY
+        )
+
+        data object Week : Unit(
+            nameResId = R.string.unit_time_week,
+            symbolResId = R.string.unit_time_week_symbol,
+            factor = DAY * 7
+        )
+
+        data object Year : Unit(
+            nameResId = R.string.unit_time_year,
+            symbolResId = R.string.unit_time_year_symbol,
+            factor = GREGORIAN_YEAR
+        )
+    }
+
+    override val units: List<Unit> = listOf(
+        Unit.Hour,
+        Unit.Minute,
+        Unit.Second,
+        Unit.Millisecond,
+        Unit.Day,
+        Unit.Week,
+        Unit.Year,
+    )
+
+    override val defaultTopUnit: Unit = Unit.Hour
+    override val defaultBottomUnit: Unit = Unit.Second
+}

app/src/main/kotlin/com/simplemobiletools/calculator/helpers/converters/VolumeConverter.kt

@@ -0,0 +1,177 @@
+package com.simplemobiletools.calculator.helpers.converters
+
+import com.simplemobiletools.calculator.R
+
+object VolumeConverter : Converter {
+    override val nameResId: Int = R.string.unit_volume
+    override val imageResId: Int = R.drawable.ic_drop_vector
+
+    sealed class Unit(nameResId: Int, symbolResId: Int, factor: Double) : Converter.Unit(nameResId, symbolResId, factor) {
+        data object CubicMeter : Unit(
+            nameResId = R.string.unit_volume_cubic_meter,
+            symbolResId = R.string.unit_volume_cubic_meter_symbol,
+            factor = 1.0
+        )
+
+        data object CubicDecimeter : Unit(
+            nameResId = R.string.unit_volume_cubic_decimeter,
+            symbolResId = R.string.unit_volume_cubic_decimeter_symbol,
+            factor = 0.001
+        )
+
+        data object CubicCentimeter : Unit(
+            nameResId = R.string.unit_volume_cubic_centimeter,
+            symbolResId = R.string.unit_volume_cubic_centimeter_symbol,
+            factor = 0.000001
+        )
+
+        data object CubicMillimeter : Unit(
+            nameResId = R.string.unit_volume_cubic_millimeter,
+            symbolResId = R.string.unit_volume_cubic_millimeter_symbol,
+            factor = 0.000000001
+        )
+
+        data object Liter : Unit(
+            nameResId = R.string.unit_volume_liter,
+            symbolResId = R.string.unit_volume_liter_symbol,
+            factor = 0.001
+        )
+
+        data object Centiliter : Unit(
+            nameResId = R.string.unit_volume_centiliter,
+            symbolResId = R.string.unit_volume_centiliter_symbol,
+            factor = 0.0001
+        )
+
+        data object Deciliter : Unit(
+            nameResId = R.string.unit_volume_deciliter,
+            symbolResId = R.string.unit_volume_deciliter_symbol,
+            factor = 0.00001
+        )
+
+        data object Milliliter : Unit(
+            nameResId = R.string.unit_volume_milliliter,
+            symbolResId = R.string.unit_volume_milliliter_symbol,
+            factor = 0.000001
+        )
+
+        data object AcreFoot : Unit(
+            nameResId = R.string.unit_volume_acre_foot,
+            symbolResId = R.string.unit_volume_acre_foot_symbol,
+            factor = 1_233.48183754752
+        )
+
+        data object CubicFoot : Unit(
+            nameResId = R.string.unit_volume_cubic_foot,
+            symbolResId = R.string.unit_volume_cubic_foot_symbol,
+            factor = 0.028316846592
+        )
+
+        data object CubicInch : Unit(
+            nameResId = R.string.unit_volume_cubic_inch,
+            symbolResId = R.string.unit_volume_cubic_inch_symbol,
+            factor = 0.000016387064
+        )
+
+        data object BarrelUS : Unit(
+            nameResId = R.string.unit_volume_barrel_us,
+            symbolResId = R.string.unit_volume_barrel_us_symbol,
+            factor = 0.119240471196
+        )
+
+        data object GallonUS : Unit(
+            nameResId = R.string.unit_volume_gallon_us,
+            symbolResId = R.string.unit_volume_gallon_us_symbol,
+            factor = 0.003785411784
+        )
+
+        data object QuartUS : Unit(
+            nameResId = R.string.unit_volume_quart_us,
+            symbolResId = R.string.unit_volume_quart_us_symbol,
+            factor = 0.000946352946
+        )
+
+        data object PintUS : Unit(
+            nameResId = R.string.unit_volume_pint_us,
+            symbolResId = R.string.unit_volume_pint_us_symbol,
+            factor = 0.000473176473
+        )
+
+        data object GillUS : Unit(
+            nameResId = R.string.unit_volume_gill_us,
+            symbolResId = R.string.unit_volume_gill_us_symbol,
+            factor = 0.00011829411825
+        )
+
+        data object FluidOunceUS : Unit(
+            nameResId = R.string.unit_volume_fluid_ounce_us,
+            symbolResId = R.string.unit_volume_fluid_ounce_us_symbol,
+            factor = 0.00003
+        )
+
+        data object BarrelImperial : Unit(
+            nameResId = R.string.unit_volume_barrel_imperial,
+            symbolResId = R.string.unit_volume_barrel_imperial_symbol,
+            factor = 0.16365924
+        )
+
+        data object GallonImperial : Unit(
+            nameResId = R.string.unit_volume_gallon_imperial,
+            symbolResId = R.string.unit_volume_gallon_imperial_symbol,
+            factor = 0.00454609
+        )
+
+        data object QuartImperial : Unit(
+            nameResId = R.string.unit_volume_quart_imperial,
+            symbolResId = R.string.unit_volume_quart_imperial_symbol,
+            factor = 0.0011365225
+        )
+
+        data object PintImperial : Unit(
+            nameResId = R.string.unit_volume_pint_imperial,
+            symbolResId = R.string.unit_volume_pint_imperial_symbol,
+            factor = 0.00056826125
+        )
+
+        data object GillImperial : Unit(
+            nameResId = R.string.unit_volume_gill_imperial,
+            symbolResId = R.string.unit_volume_gill_imperial_symbol,
+            factor = 0.0001420653125
+        )
+
+        data object FluidOunceImperial : Unit(
+            nameResId = R.string.unit_volume_fluid_ounce_imperial,
+            symbolResId = R.string.unit_volume_fluid_ounce_imperial_symbol,
+            factor = 0.0000284130625
+        )
+    }
+
+    override val units: List<Unit> = listOf(
+        Unit.CubicMeter,
+        Unit.CubicDecimeter,
+        Unit.CubicCentimeter,
+        Unit.CubicMillimeter,
+        Unit.Liter,
+        Unit.Centiliter,
+        Unit.Deciliter,
+        Unit.Milliliter,
+        Unit.AcreFoot,
+        Unit.CubicFoot,
+        Unit.CubicInch,
+        Unit.BarrelUS,
+        Unit.GallonUS,
+        Unit.QuartUS,
+        Unit.PintUS,
+        Unit.GillUS,
+        Unit.FluidOunceUS,
+        Unit.BarrelImperial,
+        Unit.GallonImperial,
+        Unit.QuartImperial,
+        Unit.PintImperial,
+        Unit.GillImperial,
+        Unit.FluidOunceImperial,
+    )
+
+    override val defaultTopUnit: Unit = Unit.Liter
+    override val defaultBottomUnit: Unit = Unit.CubicMeter
+}

app/src/main/kotlin/com/simplemobiletools/calculator/views/ConverterView.kt

@@ -0,0 +1,264 @@
+package com.simplemobiletools.calculator.views
+
+import android.app.Activity
+import android.content.Context
+import android.content.res.ColorStateList
+import android.graphics.drawable.GradientDrawable
+import android.graphics.drawable.LayerDrawable
+import android.graphics.drawable.RippleDrawable
+import android.os.Bundle
+import android.util.AttributeSet
+import android.view.View
+import android.widget.LinearLayout
+import androidx.core.content.res.ResourcesCompat
+import androidx.core.widget.TextViewCompat
+import com.simplemobiletools.calculator.R
+import com.simplemobiletools.calculator.databinding.ViewConverterBinding
+import com.simplemobiletools.calculator.helpers.*
+import com.simplemobiletools.calculator.helpers.converters.Converter
+import com.simplemobiletools.commons.dialogs.RadioGroupDialog
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.LOWER_ALPHA
+import com.simplemobiletools.commons.helpers.MEDIUM_ALPHA_INT
+import com.simplemobiletools.commons.models.RadioItem
+import me.grantland.widget.AutofitHelper
+import kotlin.reflect.KMutableProperty0
+
+class ConverterView @JvmOverloads constructor(
+    context: Context, attrs: AttributeSet? = null
+) : LinearLayout(context, attrs) {
+
+    private lateinit var binding: ViewConverterBinding
+
+    private var converter: Converter? = null
+    private var topUnit: Converter.Unit? = null
+    private var bottomUnit: Converter.Unit? = null
+
+    private var decimalSeparator: String = DOT
+    private var groupingSeparator: String = COMMA
+    private val formatter = NumberFormatHelper(
+        decimalSeparator = decimalSeparator, groupingSeparator = groupingSeparator
+    )
+
+    override fun onFinishInflate() {
+        super.onFinishInflate()
+        binding = ViewConverterBinding.bind(this)
+
+        AutofitHelper.create(binding.topUnitText)
+        AutofitHelper.create(binding.bottomUnitText)
+
+        binding.swapButton?.setOnClickListener { switch() }
+
+        binding.topUnitHolder.setClickListenerForUnitSelector(::topUnit, ::bottomUnit)
+        binding.bottomUnitHolder.setClickListenerForUnitSelector(::bottomUnit, ::topUnit)
+        binding.topUnitHolder.setOnLongClickListener {
+            context.copyToClipboard(binding.topUnitText.text.toString())
+            true
+        }
+        binding.bottomUnitHolder.setOnLongClickListener {
+            context.copyToClipboard(binding.bottomUnitText.text.toString())
+            true
+        }
+
+        updateColors()
+    }
+
+    fun setConverter(converter: Converter) {
+        this.converter = converter
+        topUnit = converter.defaultTopUnit
+        bottomUnit = converter.defaultBottomUnit
+
+        binding.topUnitText.text = "0"
+        updateBottomValue()
+        updateUnitLabelsAndSymbols()
+    }
+
+    fun updateColors() {
+        listOf(binding.topUnitText, binding.bottomUnitText, binding.topUnitName, binding.bottomUnitName).forEach {
+            it.setTextColor(context.getProperTextColor())
+        }
+        listOf(binding.topUnitName, binding.bottomUnitName).forEach {
+            TextViewCompat.setCompoundDrawableTintList(
+                it,
+                ColorStateList.valueOf(context.getProperPrimaryColor())
+            )
+        }
+
+        val rippleDrawable = ResourcesCompat.getDrawable(
+            resources, R.drawable.colored_ripple, context.theme
+        )?.constantState?.newDrawable()?.mutate() as RippleDrawable
+        val rippleColoredLayer = rippleDrawable.findDrawableByLayerId(R.id.colored_background) as GradientDrawable
+        rippleColoredLayer.applyColorFilter(context.getProperPrimaryColor().lightenColor().adjustAlpha(LOWER_ALPHA))
+        binding.topUnitHolder.background = rippleDrawable
+        binding.swapButton?.applyColorFilter(context.getProperPrimaryColor())
+
+        listOf(binding.topUnitSymbol, binding.bottomUnitSymbol).forEach {
+            val drawable = ResourcesCompat.getDrawable(
+                resources, com.simplemobiletools.commons.R.drawable.pill_background, context.theme
+            )?.constantState?.newDrawable()?.mutate() as RippleDrawable
+            val bgLayerList = drawable.findDrawableByLayerId(com.simplemobiletools.commons.R.id.button_pill_background_holder) as LayerDrawable
+            val bgLayer = bgLayerList.findDrawableByLayerId(com.simplemobiletools.commons.R.id.button_pill_background_shape) as GradientDrawable
+            bgLayer.cornerRadius = context.resources.getDimension(com.simplemobiletools.commons.R.dimen.rounded_corner_radius_big)
+            it.background = drawable
+            it.background?.alpha = MEDIUM_ALPHA_INT
+        }
+    }
+
+    fun clear() {
+        binding.topUnitText.text = "0"
+        binding.bottomUnitText.text = "0"
+    }
+
+    fun deleteCharacter() {
+        var newValue = binding.topUnitText.text.dropLast(1)
+        newValue = newValue.trimEnd(groupingSeparator.single())
+        if (newValue == "") {
+            newValue = "0"
+        }
+
+        val value = formatter.removeGroupingSeparator(newValue.toString()).toDouble()
+        binding.topUnitText.text = formatter.doubleToString(value)
+
+        updateBottomValue()
+    }
+
+    fun numpadClicked(id: Int) {
+        when (id) {
+            R.id.btn_decimal -> decimalClicked()
+            R.id.btn_0 -> zeroClicked()
+            R.id.btn_1 -> addDigit(1)
+            R.id.btn_2 -> addDigit(2)
+            R.id.btn_3 -> addDigit(3)
+            R.id.btn_4 -> addDigit(4)
+            R.id.btn_5 -> addDigit(5)
+            R.id.btn_6 -> addDigit(6)
+            R.id.btn_7 -> addDigit(7)
+            R.id.btn_8 -> addDigit(8)
+            R.id.btn_9 -> addDigit(9)
+        }
+
+        updateBottomValue()
+    }
+
+    private fun decimalClicked() {
+        var value = binding.topUnitText.text.toString()
+        if (!value.contains(decimalSeparator)) {
+            when (value) {
+                "0" -> value = "0$decimalSeparator"
+                "" -> value += "0$decimalSeparator"
+                else -> value += decimalSeparator
+            }
+
+            binding.topUnitText.text = value
+        }
+    }
+
+    private fun zeroClicked() {
+        val value = binding.topUnitText.text
+        if (value != "0" || value.contains(decimalSeparator)) {
+            addDigit(0)
+        }
+    }
+
+    private fun addDigit(digit: Int) {
+        var value = binding.topUnitText.text.toString()
+        if (value == "0") {
+            value = ""
+        }
+
+        value += digit
+        value = formatter.addGroupingSeparators(value)
+        binding.topUnitText.text = value
+    }
+
+    fun switch() {
+        ::topUnit.swapWith(::bottomUnit)
+        updateBottomValue()
+        updateUnitLabelsAndSymbols()
+    }
+
+    private fun updateUnitLabelsAndSymbols() {
+        binding.topUnitName.text = topUnit?.nameResId?.let { context.getString(it) }
+        binding.bottomUnitName.text = bottomUnit?.nameResId?.let { context.getString(it) }
+
+        binding.topUnitSymbol.text = topUnit?.symbolResId?.let { context.getString(it) }
+        binding.bottomUnitSymbol.text = bottomUnit?.symbolResId?.let { context.getString(it) }
+
+        binding.topUnitSymbol.layoutParams.width = LayoutParams.WRAP_CONTENT
+        binding.bottomUnitSymbol.layoutParams.width = LayoutParams.WRAP_CONTENT
+
+        val symbolHeight = context.resources.getDimensionPixelSize(R.dimen.unit_symbol_size)
+        binding.topUnitSymbol.measure(
+            MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
+            MeasureSpec.makeMeasureSpec(symbolHeight, MeasureSpec.EXACTLY)
+        )
+        binding.bottomUnitSymbol.measure(
+            MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
+            MeasureSpec.makeMeasureSpec(symbolHeight, MeasureSpec.EXACTLY)
+        )
+
+        val width = listOf(symbolHeight, binding.topUnitSymbol.measuredWidth, binding.bottomUnitSymbol.measuredWidth).max()
+        binding.topUnitSymbol.layoutParams.width = width
+        binding.bottomUnitSymbol.layoutParams.width = width
+        binding.topUnitSymbol.requestLayout()
+        binding.bottomUnitSymbol.requestLayout()
+    }
+
+    private fun updateBottomValue() {
+        converter?.apply {
+            val converted = convert(topUnit!!.withValue(formatter.removeGroupingSeparator(binding.topUnitText.text.toString()).toDouble()), bottomUnit!!).value
+            binding.bottomUnitText.text = formatter.doubleToString(converted)
+        }
+    }
+
+    fun updateSeparators(decimalSeparator: String, groupingSeparator: String) {
+        if (this.decimalSeparator != decimalSeparator || this.groupingSeparator != groupingSeparator) {
+            this.decimalSeparator = decimalSeparator
+            this.groupingSeparator = groupingSeparator
+            formatter.decimalSeparator = decimalSeparator
+            formatter.groupingSeparator = groupingSeparator
+            binding.topUnitText.text = "0"
+            binding.bottomUnitText.text = "0"
+        }
+    }
+
+    private fun <T> KMutableProperty0<T>.swapWith(other: KMutableProperty0<T>) {
+        this.get().also {
+            this.set(other.get())
+            other.set(it)
+        }
+    }
+
+    private fun View.setClickListenerForUnitSelector(propertyToChange: KMutableProperty0<Converter.Unit?>, otherProperty: KMutableProperty0<Converter.Unit?>) {
+        setOnClickListener {
+            val items = ArrayList(converter!!.units.mapIndexed { index, unit ->
+                RadioItem(index, unit.getNameWithSymbol(context), unit)
+            })
+            RadioGroupDialog(context as Activity, items, converter!!.units.indexOf(propertyToChange.get())) {
+                val unit = it as Converter.Unit
+                if (unit == otherProperty.get()) {
+                    switch()
+                } else if (unit != propertyToChange.get()) {
+                    propertyToChange.set(unit)
+                    updateBottomValue()
+                }
+                updateUnitLabelsAndSymbols()
+            }
+        }
+    }
+
+    fun saveState(): Bundle = Bundle().apply {
+        putInt(TOP_UNIT, converter!!.units.indexOf(topUnit!!))
+        putInt(BOTTOM_UNIT, converter!!.units.indexOf(bottomUnit!!))
+        putString(CONVERTER_VALUE, binding.topUnitText.text.toString())
+    }
+
+    fun restoreFromSavedState(state: Bundle) {
+        topUnit = converter!!.units[state.getInt(TOP_UNIT)]
+        bottomUnit = converter!!.units[state.getInt(BOTTOM_UNIT)]
+        binding.topUnitText.text = state.getString(CONVERTER_VALUE)
+
+        updateBottomValue()
+        updateUnitLabelsAndSymbols()
+    }
+}

app/src/main/res/drawable/colored_ripple.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android" android:color="?android:attr/colorControlHighlight">
+    <item android:id="@android:id/mask">
+        <shape android:shape="rectangle">
+            <solid android:color="#000000" />
+        </shape>
+    </item>
+    <item android:id="@+id/colored_background">
+        <shape android:shape="rectangle">
+            <solid android:color="#FFFFFF" />
+        </shape>
+    </item>
+</ripple>

app/src/main/res/drawable/ic_arrow_drop_down_vector.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M7,10l5,5 5,-5z"/>
+</vector>

app/src/main/res/drawable/ic_box_vector.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M19,5v14H5V5h14m0,-2H5c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h14c1.1,0 2,-0.9 2,-2V5c0,-1.1 -0.9,-2 -2,-2z"/>
+</vector>

app/src/main/res/drawable/ic_drop_vector.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M12,2c-5.33,4.55 -8,8.48 -8,11.8c0,4.98 3.8,8.2 8,8.2s8,-3.22 8,-8.2C20,10.48 17.33,6.55 12,2zM7.83,14c0.37,0 0.67,0.26 0.74,0.62c0.41,2.22 2.28,2.98 3.64,2.87c0.43,-0.02 0.79,0.32 0.79,0.75c0,0.4 -0.32,0.73 -0.72,0.75c-2.13,0.13 -4.62,-1.09 -5.19,-4.12C7.01,14.42 7.37,14 7.83,14z"/>
+</vector>

app/src/main/res/drawable/ic_height_vector.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M13,6.99l3,0l-4,-3.99l-4,3.99l3,0l0,10.02l-3,0l4,3.99l4,-3.99l-3,0z"/>
+</vector>

app/src/main/res/drawable/ic_scale_vector.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M14,11V8c4.56,-0.58 8,-3.1 8,-6H2c0,2.9 3.44,5.42 8,6l0,3c-3.68,0.73 -8,3.61 -8,11h6v-2H4.13c0.93,-6.83 6.65,-7.2 7.87,-7.2s6.94,0.37 7.87,7.2H16v2h6C22,14.61 17.68,11.73 14,11zM12,22c-1.1,0 -2,-0.9 -2,-2c0,-0.55 0.22,-1.05 0.59,-1.41C11.39,17.79 16,16 16,16s-1.79,4.61 -2.59,5.41C13.05,21.78 12.55,22 12,22z"/>
+</vector>

app/src/main/res/drawable/ic_square_foot_vector.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M17.66,17.66l-1.06,1.06l-0.71,-0.71l1.06,-1.06l-1.94,-1.94l-1.06,1.06l-0.71,-0.71l1.06,-1.06l-1.94,-1.94l-1.06,1.06l-0.71,-0.71l1.06,-1.06L9.7,9.7l-1.06,1.06l-0.71,-0.71l1.06,-1.06L7.05,7.05L5.99,8.11L5.28,7.4l1.06,-1.06L4,4v14c0,1.1 0.9,2 2,2h14L17.66,17.66zM7,17v-5.76L12.76,17H7z"/>
+</vector>

app/src/main/res/drawable/ic_swap_vertical_vector.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M16,17.01V10h-2v7.01h-3L15,21l4,-3.99h-3zM9,3L5,6.99h3V14h2V6.99h3L9,3z"/>
+</vector>

app/src/main/res/drawable/ic_thermostat_vector.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M15,13V5c0,-1.66 -1.34,-3 -3,-3S9,3.34 9,5v8c-1.21,0.91 -2,2.37 -2,4c0,2.76 2.24,5 5,5s5,-2.24 5,-5C17,15.37 16.21,13.91 15,13zM11,11V5c0,-0.55 0.45,-1 1,-1s1,0.45 1,1v1h-1v1h1v1v1h-1v1h1v1H11z"/>
+</vector>

app/src/main/res/drawable/ripple_circle_background.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android" android:color="?android:attr/colorControlHighlight">
+    <item android:id="@android:id/mask">
+        <shape android:shape="oval">
+            <solid android:color="#000000"/>
+        </shape>
+    </item>
+</ripple>

app/src/main/res/drawable/unit_type_background.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="#22ffffff">
+    <item android:id="@+id/background_holder">
+        <layer-list>
+            <item android:id="@+id/background_shape">
+                <shape android:shape="rectangle">
+                    <corners android:radius="@dimen/medium_margin" />
+                    <solid android:color="@color/md_grey_800" />
+                </shape>
+            </item>
+            <item android:id="@+id/background_stroke">
+                <shape android:shape="rectangle">
+                    <solid android:color="@android:color/transparent" />
+                    <stroke
+                        android:width="1dp"
+                        android:color="@color/md_grey_600" />
+                    <corners android:radius="@dimen/medium_margin" />
+                </shape>
+            </item>
+        </layer-list>
+    </item>
+</ripple>

app/src/main/res/layout-land/view_converter.xml

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.simplemobiletools.calculator.views.ConverterView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/top_unit_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_weight="3"
+        android:background="@drawable/colored_ripple"
+        android:orientation="vertical"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin">
+
+        <TextView
+            android:id="@+id/top_unit_name"
+            android:layout_width="wrap_content"
+            android:layout_height="0dp"
+            android:layout_marginStart="@dimen/activity_margin"
+            android:gravity="center"
+            android:textAlignment="gravity"
+            android:textSize="@dimen/big_text_size"
+            android:layout_marginTop="@dimen/normal_margin"
+            android:layout_marginBottom="@dimen/small_margin"
+            app:drawableEndCompat="@drawable/ic_arrow_drop_down_vector"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/top_unit_text"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_marginEnd="@dimen/normal_margin"
+            android:layout_weight="2"
+            android:gravity="end|center_vertical"
+            android:singleLine="true"
+            android:textAlignment="gravity"
+            android:textSize="@dimen/extra_big_text_size"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/top_unit_symbol"
+            app:layout_constraintStart_toEndOf="@+id/top_unit_name"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/top_unit_symbol"
+            style="@style/MyButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:minHeight="@dimen/unit_symbol_size"
+            android:padding="@dimen/small_margin"
+            android:singleLine="true"
+            android:textAlignment="gravity"
+            android:textSize="@dimen/big_text_size"
+            app:layout_constraintBottom_toBottomOf="@+id/top_unit_text"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="@+id/top_unit_text" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/bottom_unit_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_weight="3"
+        android:background="@drawable/ripple_background"
+        android:orientation="vertical"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin">
+
+        <TextView
+            android:id="@+id/bottom_unit_name"
+            android:layout_width="wrap_content"
+            android:layout_height="0dp"
+            android:layout_gravity="start|center_vertical"
+            android:layout_marginStart="@dimen/activity_margin"
+            android:gravity="center"
+            android:textAlignment="gravity"
+            android:textSize="@dimen/big_text_size"
+            app:drawableEndCompat="@drawable/ic_arrow_drop_down_vector"
+            android:layout_marginTop="@dimen/normal_margin"
+            android:layout_marginBottom="@dimen/small_margin"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/bottom_unit_text"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_marginEnd="@dimen/normal_margin"
+            android:gravity="end|center_vertical"
+            android:singleLine="true"
+            android:textAlignment="gravity"
+            android:textSize="@dimen/extra_big_text_size"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/bottom_unit_symbol"
+            app:layout_constraintStart_toEndOf="@+id/bottom_unit_name"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/bottom_unit_symbol"
+            style="@style/MyButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:minHeight="@dimen/unit_symbol_size"
+            android:padding="@dimen/small_margin"
+            android:singleLine="true"
+            android:textAlignment="gravity"
+            android:textSize="@dimen/big_text_size"
+            app:layout_constraintBottom_toBottomOf="@+id/bottom_unit_text"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="@+id/bottom_unit_text" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</com.simplemobiletools.calculator.views.ConverterView>

app/src/main/res/layout/activity_unit_converter.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/unit_converter_coordinator"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context="com.simplemobiletools.calculator.activities.UnitConverterActivity"
+    tools:ignore="HardcodedText">
+
+    <com.google.android.material.appbar.MaterialToolbar
+        android:id="@+id/unit_converter_toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="?attr/actionBarSize"
+        android:background="@color/color_primary"
+        app:titleTextAppearance="@style/AppTheme.ActionBar.TitleTextStyle" />
+
+    <androidx.core.widget.NestedScrollView
+        android:id="@+id/nested_scrollview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginTop="?attr/actionBarSize"
+        android:fillViewport="true"
+        android:scrollbars="none">
+
+        <include
+            android:id="@+id/view_unit_converter"
+            layout="@layout/view_unit_converter"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
+
+    </androidx.core.widget.NestedScrollView>
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/activity_unit_converter_picker.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/unit_converter_picker_coordinator"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context="com.simplemobiletools.calculator.activities.UnitConverterActivity"
+    tools:ignore="HardcodedText">
+
+    <com.google.android.material.appbar.MaterialToolbar
+        android:id="@+id/unit_converter_picker_toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="?attr/actionBarSize"
+        android:background="@color/color_primary"
+        app:titleTextAppearance="@style/AppTheme.ActionBar.TitleTextStyle" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/unit_types_grid"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginTop="?attr/actionBarSize"
+        android:layout_marginStart="@dimen/activity_margin"
+        android:layout_marginEnd="@dimen/activity_margin"
+        app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
+        tools:itemCount="20"
+        tools:listitem="@layout/item_unit_type"
+        app:spanCount="4" />
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/layout/item_unit_type.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="@dimen/unit_type_size"
+    android:id="@+id/unit_background"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_margin="@dimen/small_margin"
+    android:background="@drawable/unit_type_background"
+    android:padding="@dimen/normal_margin"
+    android:gravity="center"
+    android:layout_gravity="center"
+    android:orientation="vertical">
+
+    <ImageView
+        android:id="@+id/unit_image"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        tools:src="@drawable/ic_thermostat_vector"
+        android:layout_gravity="center"
+        android:padding="@dimen/normal_margin"
+        android:importantForAccessibility="no"
+        tools:tint="@color/color_primary" />
+
+    <TextView
+        android:id="@+id/unit_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:textAlignment="center"
+        android:singleLine="true"
+        tools:text="Temperature" />
+
+</LinearLayout>

app/src/main/res/layout/view_converter.xml

@@ -0,0 +1,125 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.simplemobiletools.calculator.views.ConverterView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/top_unit_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingStart="@dimen/activity_margin"
+        android:paddingEnd="@dimen/activity_margin"
+        android:background="@drawable/colored_ripple"
+        android:orientation="vertical"
+        android:layout_weight="3">
+
+        <TextView
+            android:id="@+id/top_unit_name"
+            android:layout_width="wrap_content"
+            android:layout_height="0dp"
+            android:layout_marginTop="@dimen/normal_margin"
+            android:layout_marginBottom="@dimen/small_margin"
+            android:layout_marginStart="@dimen/activity_margin"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            android:textSize="@dimen/big_text_size"
+            app:drawableEndCompat="@drawable/ic_arrow_drop_down_vector" />
+
+        <TextView
+            android:id="@+id/top_unit_text"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:singleLine="true"
+            android:layout_marginEnd="@dimen/normal_margin"
+            android:gravity="end|center_vertical"
+            android:layout_weight="2"
+            android:textAlignment="gravity"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/top_unit_symbol"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/top_unit_name"
+            android:textSize="@dimen/display_text_size" />
+
+        <TextView
+            android:id="@+id/top_unit_symbol"
+            style="@style/MyButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:minHeight="@dimen/unit_symbol_size"
+            android:gravity="center"
+            android:padding="@dimen/small_margin"
+            android:singleLine="true"
+            android:textAlignment="gravity"
+            android:textSize="@dimen/big_text_size"
+            app:layout_constraintBottom_toBottomOf="@+id/top_unit_text"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="@+id/top_unit_text" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <ImageView
+        android:id="@+id/swap_button"
+        android:layout_width="@dimen/unit_switch_button_size"
+        android:layout_height="@dimen/unit_switch_button_size"
+        android:background="@drawable/ripple_circle_background"
+        android:layout_gravity="center"
+        android:padding="@dimen/activity_margin"
+        android:src="@drawable/ic_swap_vertical_vector" />
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/bottom_unit_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingStart="@dimen/activity_margin"
+        android:background="@drawable/ripple_background"
+        android:paddingEnd="@dimen/activity_margin"
+        android:orientation="vertical"
+        android:layout_weight="3">
+
+        <TextView
+            android:id="@+id/bottom_unit_name"
+            android:layout_width="wrap_content"
+            android:layout_height="0dp"
+            android:layout_gravity="start|center_vertical"
+            android:layout_marginTop="@dimen/normal_margin"
+            android:layout_marginStart="@dimen/activity_margin"
+            android:layout_marginBottom="@dimen/small_margin"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            android:textSize="@dimen/big_text_size"
+            app:drawableEndCompat="@drawable/ic_arrow_drop_down_vector" />
+
+        <TextView
+            android:id="@+id/bottom_unit_text"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:singleLine="true"
+            android:layout_marginEnd="@dimen/normal_margin"
+            android:gravity="end|center_vertical"
+            android:textAlignment="gravity"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toStartOf="@+id/bottom_unit_symbol"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/bottom_unit_name"
+            android:textSize="@dimen/display_text_size" />
+
+        <TextView
+            android:id="@+id/bottom_unit_symbol"
+            style="@style/MyButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:minHeight="@dimen/unit_symbol_size"
+            android:gravity="center"
+            android:padding="@dimen/small_margin"
+            android:singleLine="true"
+            android:textAlignment="gravity"
+            android:textSize="@dimen/big_text_size"
+            app:layout_constraintBottom_toBottomOf="@+id/bottom_unit_text"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="@+id/bottom_unit_text" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</com.simplemobiletools.calculator.views.ConverterView>

app/src/main/res/layout/view_unit_converter.xml

@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/converter_holder"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:hapticFeedbackEnabled="true"
+    android:layoutDirection="ltr"
+    android:orientation="vertical"
+    android:weightSum="11.5"
+    tools:ignore="HardcodedText">
+
+    <include
+        android:id="@+id/view_converter"
+        layout="@layout/view_converter"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="1.5"/>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="2.5"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/btn_7"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="7" />
+
+        <TextView
+            android:id="@+id/btn_8"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="8" />
+
+        <TextView
+            android:id="@+id/btn_9"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="9" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="2.5"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/btn_4"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="4" />
+
+        <TextView
+            android:id="@+id/btn_5"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="5" />
+
+        <TextView
+            android:id="@+id/btn_6"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="6" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="2.5"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/btn_1"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="1" />
+
+        <TextView
+            android:id="@+id/btn_2"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="2" />
+
+        <TextView
+            android:id="@+id/btn_3"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="3" />
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="2.5"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/btn_0"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="0" />
+
+        <TextView
+            android:id="@+id/btn_decimal"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="." />
+
+        <TextView
+            android:id="@+id/btn_clear"
+            style="@style/MyButton"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:text="C" />
+    </LinearLayout>
+</LinearLayout>

app/src/main/res/menu/converter_menu.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:ignore="AlwaysShowAction">
+    <item
+        android:id="@+id/swap_units"
+        android:icon="@drawable/ic_swap_vertical_vector"
+        android:title="@string/swap_units"
+        app:showAsAction="always" />
+</menu>

app/src/main/res/menu/menu.xml

@@ -8,6 +8,11 @@
         android:icon="@drawable/ic_clock_vector"
         android:title="@string/history"
         app:showAsAction="always" />
+    <item
+        android:id="@+id/unit_converter"
+        android:icon="@drawable/ic_square_foot_vector"
+        android:title="@string/unit_converter"
+        app:showAsAction="always" />
     <item
         android:id="@+id/settings"
         android:icon="@drawable/ic_settings_cog_vector"

app/src/main/res/values-ar/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">الحاسبة البسيطة</string>
     <string name="app_launcher_name">الحاسبة</string>
     <string name="scientific_calculator">الحاسبة العلمية</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">خطأ: القسمة على صفر</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">الاهتزاز عند الضغط على الازرار</string>
     <string name="use_comma_as_decimal_mark">استخدام الفاصلة كعلامة عشرية</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">كيف يعمل الزر C (مسح)؟</string>
     <string name="faq_1_text">النقر على ذلك سوف يزيل حرف واحد في وقت واحد. الضغط لفترة طويلة سوف إعادة تعيين جميع الحقول في وقت واحد.</string>

app/src/main/res/values-az/strings.xml

@@ -2,6 +2,8 @@
     <string name="app_name">Sadə Kalkulyator</string>
     <string name="app_launcher_name">Kalkulyator</string>
     <string name="scientific_calculator">Scientific Calculator</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
 
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Səhv: sıfıra bölünmə</string>
@@ -15,6 +17,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Düyməyə basdıqda titrə</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
 
     <!-- FAQ -->
     <string name="faq_1_title">C (Sil) düyməsi necə işləyir?</string>

app/src/main/res/values-be/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simple Calculator</string>
     <string name="app_launcher_name">Калькулятар</string>
     <string name="scientific_calculator">Навуковы калькулятар</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Памылка: дзяленне на нуль</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Вібраваць пры націску на кнопкі</string>
     <string name="use_comma_as_decimal_mark">Выкарыстоўваць коску ў якасці дзесятковага падзельніка</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Як працуе кнопка C (Ачыстка)\?</string>
     <string name="faq_1_text">Крананне да яе выдаляе адзін сімвал. Доўгае націсканне на яе ачышчае адразу ўсе палі.</string>

app/src/main/res/values-bg/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Обикновен Калкулатор</string>
     <string name="app_launcher_name">Калкулатор</string>
     <string name="scientific_calculator">Научен калкулатор</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Грешка: деление на нула</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Вибриране при натискане на бутоните</string>
     <string name="use_comma_as_decimal_mark">Използване на запетая като десетичен знак</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Как работи бутонът C (Clear)\?</string>
     <string name="faq_1_text">Натискането му ще премахва по един символ. Дълго натискане ще изчисти наведнъж всички полета.</string>

app/src/main/res/values-bs/strings.xml

@@ -0,0 +1,106 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">Jednostavni kalkulator</string>
+    <string name="app_launcher_name">Kalkulator</string>
+    <string name="scientific_calculator">Naučni kalkulator</string>
+    <string name="unit_converter">Pretvarač jedinica</string>
+    <string name="swap_units">Zamijeni jedinice</string>
+    <!-- Calculator field -->
+    <string name="formula_divide_by_zero_error">Greška: dijeljenje s nulom</string>
+    <!-- History -->
+    <string name="history">Historija</string>
+    <string name="history_empty">Historija je prazna</string>
+    <string name="clear_history">Izbriši</string>
+    <string name="history_cleared">Historija je izbrisana</string>
+    <!-- Settings -->
+    <string name="vibrate_on_button_press">Vibriraj prilikom pritiskanja gumba</string>
+    <string name="use_comma_as_decimal_mark">Koristi zarez kao decimalni znak</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Dužina</string>
+    <string name="unit_length_kilometer">Kilometar</string>
+    <string name="unit_length_meter">Metar</string>
+    <string name="unit_length_centimeter">Centimetar</string>
+    <string name="unit_length_millimeter">Milimetar</string>
+    <string name="unit_length_micrometer">Mikrometar</string>
+    <string name="unit_length_nanometer">Nanometar</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Milja</string>
+    <string name="unit_length_yard">Jard</string>
+    <string name="unit_length_foot">Stopa</string>
+    <string name="unit_length_inch">Palac</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautička milja</string>
+    <string name="unit_length_astronomical_unit">Astronomska jedinica</string>
+    <string name="unit_length_parsec">Parsek</string>
+    <string name="unit_length_light_year">Svjetlosna godina</string>
+    <string name="unit_area">Površina</string>
+    <string name="unit_area_square_kilometer">Kvadratni kilometar</string>
+    <string name="unit_area_square_meter">Kvadratni metar</string>
+    <string name="unit_area_square_centimeter">Kvadratni centimetar</string>
+    <string name="unit_area_square_millimeter">Kvadratni milimetar</string>
+    <string name="unit_area_square_mile">Kvadratna milja</string>
+    <string name="unit_area_square_yard">Kvadratni jard</string>
+    <string name="unit_area_square_foot">Kvadratna stopa</string>
+    <string name="unit_area_square_inch">Kvadratni palac</string>
+    <string name="unit_area_acre">Aker</string>
+    <string name="unit_area_hectare">Hektar</string>
+    <string name="unit_volume">Zapremina</string>
+    <string name="unit_volume_cubic_meter">Kubni metar</string>
+    <string name="unit_volume_cubic_decimeter">Kubni decimetar</string>
+    <string name="unit_volume_cubic_centimeter">Kubni centimetar</string>
+    <string name="unit_volume_cubic_millimeter">Kubni milimetar</string>
+    <string name="unit_volume_liter">Litar</string>
+    <string name="unit_volume_centiliter">Centilitar</string>
+    <string name="unit_volume_deciliter">Decilitar</string>
+    <string name="unit_volume_milliliter">Mililitar</string>
+    <string name="unit_volume_acre_foot">Aker stopa</string>
+    <string name="unit_volume_cubic_foot">Kubna stopa</string>
+    <string name="unit_volume_cubic_inch">Kubni palac</string>
+    <string name="unit_volume_barrel_us">Barel (SAD)</string>
+    <string name="unit_volume_gallon_us">Galon (SAD)</string>
+    <string name="unit_volume_quart_us">Četvrtina (SAD)</string>
+    <string name="unit_volume_pint_us">Pinta (SAD)</string>
+    <string name="unit_volume_gill_us">Gill (SAD)</string>
+    <string name="unit_volume_fluid_ounce_us">Unca tekuća(SAD)</string>
+    <string name="unit_volume_barrel_imperial">Barel (Imperijalni)</string>
+    <string name="unit_volume_gallon_imperial">Galon (Imperijalni)</string>
+    <string name="unit_volume_quart_imperial">Četvrtina (Imperijalna)</string>
+    <string name="unit_volume_pint_imperial">Pinta (Imperijalna)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperijalni)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Unca tekuća (Imperijalna)</string>
+    <string name="unit_mass">Masa</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Miligram</string>
+    <string name="unit_mass_microgram">Mikrogram</string>
+    <string name="unit_mass_tonne">Tona</string>
+    <string name="unit_mass_pound">Funta</string>
+    <string name="unit_mass_ounce">Unca</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Tona</string>
+    <string name="unit_mass_short_ton">Short Tona</string>
+    <string name="unit_mass_carat">Karat</string>
+    <string name="unit_mass_carat_metric">Karat (Metrični)</string>
+    <string name="unit_temperature">Temperatura</string>
+    <string name="unit_temperature_celsius">Celzijus</string>
+    <string name="unit_temperature_fahrenheit">Farenhajt</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Vrijeme</string>
+    <string name="unit_time_hour">Sat</string>
+    <string name="unit_time_minute">Minuta</string>
+    <string name="unit_time_second">Sekunda</string>
+    <string name="unit_time_millisecond">Milisekunda</string>
+    <string name="unit_time_day">Dan</string>
+    <string name="unit_time_week">Sedmica</string>
+    <string name="unit_time_year">Godina</string>
+    <!-- FAQ -->
+    <string name="faq_1_title">Kako funkcionira gumb C (Izbriši)\?</string>
+    <string name="faq_1_text">Dodirom gumba uklanjaju se znakovi jedan po jedan. Dugim pritiskom gumba brišu se svi znakovi.</string>
+    <!--
+        Haven't found some strings? There's more at
+        https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res
+    -->
+</resources>

app/src/main/res/values-ca/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simple Calculator</string>
     <string name="app_launcher_name">Calculadora</string>
     <string name="scientific_calculator">Calculadora científica</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Error: divisió per zero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibra en prémer els botons</string>
     <string name="use_comma_as_decimal_mark">Utilitza la coma com a marca decimal</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Com funciona el botó C (Esborra)\?</string>
     <string name="faq_1_text">En tocar-lo, s\'eliminarà un caràcter a la vegada. Si el premeu prolongadament, es reiniciaran tots els camps de cop.</string>

app/src/main/res/values-cs/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Jednoduchá kalkulačka</string>
     <string name="app_launcher_name">Kalkulačka</string>
     <string name="scientific_calculator">Vědecká kalkulačka</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Chyba: dělení nulou</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrovat při stisku tlačítka</string>
     <string name="use_comma_as_decimal_mark">Použít čárku jako oddělovač desetin</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Jak funguje tlačítko C?</string>
     <string name="faq_1_text">Stisknutím odmažete jeden znak. Dlouhým podržením smažete naráz všechna pole.</string>

app/src/main/res/values-cy/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simple Calculator</string>
     <string name="app_launcher_name">Cyfrifiannell</string>
     <string name="scientific_calculator">Cyfrifiannell Gwyddonol</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Gwall: rhannu â sero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Dirgrynu wrth wasgu botymau</string>
     <string name="use_comma_as_decimal_mark">Defnyddio atalnod fel pwynt degol</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Sut mae\'r botwm C (clirio) yn gweithio?</string>
     <string name="faq_1_text">Mae ei dapio yn tynnu un rhif ar y tro. Mae ei dal yn ailosod pob maes gyda\'i gilydd ar unwaith.</string>

app/src/main/res/values-da/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simpel lommeregner</string>
     <string name="app_launcher_name">Lommeregner</string>
     <string name="scientific_calculator">Videnskabelig lommeregner</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Fejl: division med nul</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrer ved knaptryk</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Hvordan virker knappen C (Slet)\?</string>
     <string name="faq_1_text">Hvis du trykker på det, fjernes et tegn ad gangen. Langt tryk vil nulstille alle felter på én gang.</string>

app/src/main/res/values-de/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Schlichter Rechner</string>
     <string name="app_launcher_name">Rechner</string>ng&gt;
     <string name="scientific_calculator">Wissenschaftlicher Rechner</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Fehler: Division durch Null</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Bei Tastendruck vibrieren</string>
     <string name="use_comma_as_decimal_mark">Komma als Dezimaltrennzeichen verwenden</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Wie funktioniert die C-Taste (Löschen)\?</string>
     <string name="faq_1_text">Bei einmaliger Berührung wird ein Zeichen entfernt. Bei langer Berührung werden alle Felder zurück gesetzt.</string>

app/src/main/res/values-el/strings.xml

@@ -2,6 +2,8 @@
     <string name="app_name">Απλή Αριθμομηχανή</string>
     <string name="app_launcher_name">Αριθμομηχανή</string>
     <string name="scientific_calculator">Επιστημονική Αριθμομηχανή</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
 
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Σφάλμα: διαίρεση με μηδέν</string>
@@ -15,6 +17,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Δόνηση στο πάτημα πλήκτρου</string>
     <string name="use_comma_as_decimal_mark">Χρήση κόμματος ως δεκαδικό σημείο</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
 
     <!-- FAQ -->
     <string name="faq_1_title">Πώς λειτουργεί το κουμπί C (Καθαρισμός);</string>

app/src/main/res/values-eo/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simpla Kalkulilo</string>
     <string name="app_launcher_name">Kalkulilo</string>
     <string name="scientific_calculator">Sciena kalkulilo</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Eraro: divido per nul</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrigi je butonpremo</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Kiel funkcias la butono C («Forviŝi»)\?</string>
     <string name="faq_1_text">Frapetado sur ĝi forviŝos signojn po unu por frapeto. Longa premado forviŝos ĉiujn kampojn samtempe.</string>

app/src/main/res/values-es/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simple Calculator</string>
     <string name="app_launcher_name">Calculadora</string>
     <string name="scientific_calculator">Calculadora científica</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Error: división por cero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrar al presionar un botón</string>
     <string name="use_comma_as_decimal_mark">Usar una coma como marca decimal</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">¿Cómo funciona el botón C (Borrar)\?</string>
     <string name="faq_1_text">Presionándolo una vez eliminará un solo carácter. Mantenerlo presionado reiniciará todos los campos.</string>

app/src/main/res/values-et/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Lihtne kalkulaator</string>
     <string name="app_launcher_name">Kalkulaator</string>
     <string name="scientific_calculator">Teadusrežiim</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Viga: nulliga jagamine</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Nupuvajutusel vibreeri</string>
     <string name="use_comma_as_decimal_mark">Kasutage koma kui kümnendmärki</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Kuidas C (Clear) nupp toimib\?</string>
     <string name="faq_1_text">Üks klõpsatus kustutab ühe numbri. Pikk vajutus eemaldab kogu sisestuse.</string>

app/src/main/res/values-fi/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Yksinkertainen laskin</string>
     <string name="app_launcher_name">Laskin</string>
     <string name="scientific_calculator">Funktiolaskin</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Virhe: jako nollalla</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Värähdä painikkeista</string>
     <string name="use_comma_as_decimal_mark">Käytä pilkkua desimaalierottimena</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Miten C (Tyhjennä) -painike toimii\?</string>
     <string name="faq_1_text">Sen napautus poistaa yhden merkin kerrallaan ja pitkä painallus tyhjentää kaikki kentät.</string>

app/src/main/res/values-fil/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simpleng Calculator</string>
     <string name="app_launcher_name">Calculator</string>
     <string name="scientific_calculator">Scientific Calculator</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <string name="formula_divide_by_zero_error">Error: paghahati sa zero</string>
     <string name="history">Nakaraan</string>
     <string name="history_empty">Walang nakaraan</string>
@@ -10,6 +12,87 @@
     <string name="history_cleared">Nalinis na ang nakaraan</string>
     <string name="vibrate_on_button_press">Mag-vibrate sa pagpindot</string>
     <string name="use_comma_as_decimal_mark">Gumamit ng kuwit bilang decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <string name="faq_1_title">Paano gumagana ang C (Clear) button\?</string>
     <string name="faq_1_text">Matatanggal ng isang karakter kapag pinindot ito nang isang beses. Ire-reset naman ang lahat ng mga field kapag mahabang pinindot ito.</string>
 </resources>

app/src/main/res/values-fr/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Calculatrice simple</string>
     <string name="app_launcher_name">Calculatrice</string>
     <string name="scientific_calculator">Calculatrice scientifique</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Erreur : division par zéro</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrer lors de l\'appui sur les touches</string>
     <string name="use_comma_as_decimal_mark">Utiliser la virgule comme séparateur décimal</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Comment fonctionne le bouton C (Effacer) \?</string>
     <string name="faq_1_text">En appuyant dessus, vous effacerez un caractère à la fois. Un appui prolongé réinitialisera tous les champs d\'un seul coup.</string>

app/src/main/res/values-gl/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Calculadora sinxela</string>
     <string name="app_launcher_name">Calculadora</string>
     <string name="scientific_calculator">Calculadora Científica</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Erro: división por cero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrar ao premer nun botón</string>
     <string name="use_comma_as_decimal_mark">Usar cómaa como marca decimal</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Como funciona o botón C (Borrar)?</string>
     <string name="faq_1_text">O premer, eliminarase un carácter á vez. O premer de forma continua, restableceranse todos os campos á vez.</string>

app/src/main/res/values-hi/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">सरल कैलकुलेटर</string>
     <string name="app_launcher_name">कैलकुलेटर</string>
     <string name="scientific_calculator">वैज्ञानिक कैलकुलेटर</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <string name="formula_divide_by_zero_error">त्रुटि: शून्य से विभाजन</string>
     <string name="history">इतिहास</string>
     <string name="history_empty">इतिहास खाली है</string>
@@ -10,6 +12,87 @@
     <string name="history_cleared">इतिहास साफ हो चुका है</string>
     <string name="vibrate_on_button_press">बटन प्रेस पर कंपन</string>
     <string name="use_comma_as_decimal_mark">दशमलव चिह्न के रूप में अल्पविराम का उपयोग करें</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <string name="faq_1_title">सी (क्लियर) बटन कैसे काम करता है\?</string>
     <string name="faq_1_text">इस पर टैप करने से एक बार में एक कैरेक्टर हट जाएगा। लंबे समय तक इसे दबाने से एक ही बार में सभी फ़ील्ड रीसेट हो जाएंगे।</string>
 </resources>

app/src/main/res/values-hr/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Jednostavan kalkulator</string>
     <string name="app_launcher_name">Kalkulator</string>
     <string name="scientific_calculator">Znanstveni kalkulator</string>
+    <string name="unit_converter">Pretvarač jedinica</string>
+    <string name="swap_units">Zamijeni jedinice</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Greška: dijeljenje s nulom</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibriraj prilikom pritiskanja gumba</string>
     <string name="use_comma_as_decimal_mark">Koristi zarez kao decimalni znak</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Duljina</string>
+    <string name="unit_length_kilometer">Kilometar</string>
+    <string name="unit_length_meter">Metar</string>
+    <string name="unit_length_centimeter">Centimetar</string>
+    <string name="unit_length_millimeter">Milimetar</string>
+    <string name="unit_length_micrometer">Mikrometar</string>
+    <string name="unit_length_nanometer">Nanometar</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Milja</string>
+    <string name="unit_length_yard">Jard</string>
+    <string name="unit_length_foot">Stopa</string>
+    <string name="unit_length_inch">Palac</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautička milja</string>
+    <string name="unit_length_astronomical_unit">Astronomska jedinica</string>
+    <string name="unit_length_parsec">Parsek</string>
+    <string name="unit_length_light_year">Svjetlosna godina</string>
+    <string name="unit_area">Površina</string>
+    <string name="unit_area_square_kilometer">Četvorni kilometar</string>
+    <string name="unit_area_square_meter">Četvorni metar</string>
+    <string name="unit_area_square_centimeter">Četvorni centimetar</string>
+    <string name="unit_area_square_millimeter">Četvorni milimetar</string>
+    <string name="unit_area_square_mile">Četvorna milja</string>
+    <string name="unit_area_square_yard">Četvorni jard</string>
+    <string name="unit_area_square_foot">Četvorna stopa</string>
+    <string name="unit_area_square_inch">Četvorni palac</string>
+    <string name="unit_area_acre">Aker</string>
+    <string name="unit_area_hectare">Hektar</string>
+    <string name="unit_volume">Obujam</string>
+    <string name="unit_volume_cubic_meter">Kubični metar</string>
+    <string name="unit_volume_cubic_decimeter">Kubični decimetar</string>
+    <string name="unit_volume_cubic_centimeter">Kubični centimetar</string>
+    <string name="unit_volume_cubic_millimeter">Kubični milimetar</string>
+    <string name="unit_volume_liter">Litra</string>
+    <string name="unit_volume_centiliter">Centilitra</string>
+    <string name="unit_volume_deciliter">Decilitra</string>
+    <string name="unit_volume_milliliter">Mililitra</string>
+    <string name="unit_volume_acre_foot">Aker stopa</string>
+    <string name="unit_volume_cubic_foot">Kubična stopa</string>
+    <string name="unit_volume_cubic_inch">Kubični palac</string>
+    <string name="unit_volume_barrel_us">Barel (SAD)</string>
+    <string name="unit_volume_gallon_us">Galon (SAD)</string>
+    <string name="unit_volume_quart_us">Četvrtina (SAD)</string>
+    <string name="unit_volume_pint_us">Pinta (SAD)</string>
+    <string name="unit_volume_gill_us">Gill (SAD)</string>
+    <string name="unit_volume_fluid_ounce_us">Unca tekuća(SAD)</string>
+    <string name="unit_volume_barrel_imperial">Barel (Imperijalni)</string>
+    <string name="unit_volume_gallon_imperial">Galon (Imperijalni)</string>
+    <string name="unit_volume_quart_imperial">Četvrtina (Imperijalna)</string>
+    <string name="unit_volume_pint_imperial">Pinta (Imperijalna)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperijalni)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Unca tekuća (Imperijalna)</string>
+    <string name="unit_mass">Masa</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Miligram</string>
+    <string name="unit_mass_microgram">Mikrogram</string>
+    <string name="unit_mass_tonne">Tona</string>
+    <string name="unit_mass_pound">Funta</string>
+    <string name="unit_mass_ounce">Unca</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Tona</string>
+    <string name="unit_mass_short_ton">Short Tona</string>
+    <string name="unit_mass_carat">Karat</string>
+    <string name="unit_mass_carat_metric">Karat (Metrični)</string>
+    <string name="unit_temperature">Temperatura</string>
+    <string name="unit_temperature_celsius">Celzijus</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Vrijeme</string>
+    <string name="unit_time_hour">Sat</string>
+    <string name="unit_time_minute">Minuta</string>
+    <string name="unit_time_second">Sekunda</string>
+    <string name="unit_time_millisecond">Milisekunda</string>
+    <string name="unit_time_day">Dan</string>
+    <string name="unit_time_week">Tjedan</string>
+    <string name="unit_time_year">Godina</string>
     <!-- FAQ -->
     <string name="faq_1_title">Kako funkcionira gumb C (Izbriši)\?</string>
     <string name="faq_1_text">Dodirom gumba uklanjaju se znakovi jedan po jedan. Dugim pritiskom gumba obnavljaju se sva polja.</string>

app/src/main/res/values-hu/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Egyszerű számológép</string>
     <string name="app_launcher_name">Számológép</string>
     <string name="scientific_calculator">Tudományos számológép</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Hiba: nullával való osztás</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Rezgés gombnyomáskor</string>
     <string name="use_comma_as_decimal_mark">Tizedesjelként vessző használata</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Hogyan működik a C (törlés) gomb\?</string>
     <string name="faq_1_text">A koppintás egyszerre egy karaktert töröl. A hosszú lenyomás egyszerre állítja vissza az összes mezőt.</string>

app/src/main/res/values-in/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simple Calculator</string>
     <string name="app_launcher_name">Kalkulator</string>
     <string name="scientific_calculator">Kalkulator Sains</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Kesalahan: pembagian dengan nol</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Getar saat tombol ditekan</string>
     <string name="use_comma_as_decimal_mark">Gunakan koma sebagai tanda desimal</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Bagaimana tombol C (Clear) bekerja?</string>
     <string name="faq_1_text">Menyentuhnya sekali akan menghapus satu karakter. Menyentuhnya lama akan mengosongkan seluruh ruas sekaligus.</string>

app/src/main/res/values-is/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simple Calculator</string>
     <string name="app_launcher_name">Calculator</string>
     <string name="scientific_calculator">Vísindareiknivél</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Error: division by zero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Titra þegar pikkað er á takka</string>
     <string name="use_comma_as_decimal_mark">Nota kommu sem tugabrotskommu</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Hvernig virkar C (Hreinsa) hnappurinn\?</string>
     <string name="faq_1_text">Með því að pikka á hann verður einn stafur fjarlægður í einu. Haltu inni til þess að endurstilla alla reiti í einu.</string>

app/src/main/res/values-it/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Calcolatrice Semplice</string>
     <string name="app_launcher_name">Calcolatrice</string>
     <string name="scientific_calculator">Calcolatrice scientifica</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Errore: divisione per zero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibra alla pressione di un tasto</string>
     <string name="use_comma_as_decimal_mark">Usa la virgola come segno decimale</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Come funziona il tasto C (Cancella)?</string>
     <string name="faq_1_text">Premendo il tasto una volta verrà eliminato un singolo carattere; tenendolo premuto invece eliminerà tutta la stringa.</string>

app/src/main/res/values-iw/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">מחשבון פשוט</string>
     <string name="app_launcher_name">מחשבון</string>
     <string name="scientific_calculator">מחשבון מדעי</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">שגיאה: חלוקה באפס</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">רטט בעת לחיצה</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">כיצד פועל לחצן C (ניקוי)\?</string>
     <string name="faq_1_text">הקשה עליו תסיר תו אחד בכל פעם. לחיצה ארוכה עליו תאפס את כל השדות בבת אחת.</string>

app/src/main/res/values-ja/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">シンプル電卓</string>
     <string name="app_launcher_name">電卓</string>
     <string name="scientific_calculator">科学計算電卓</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">エラー：ゼロによる除算</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">ボタンのタップ時に振動する</string>
     <string name="use_comma_as_decimal_mark">カンマを小数点として使う</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">C (クリア) ボタンはどのように機能しますか？</string>
     <string name="faq_1_text">ボタンをタップするたびに1文字ずつ削除されます。ボタンを長押しするとすべてのフィールドがリセットされます。</string>

app/src/main/res/values-kn/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">ಸರಳ ಕ್ಯಾಲ್ಕುಲೇಟರ್</string>
     <string name="app_launcher_name">ಕ್ಯಾಲ್ಕುಲೇಟರ್</string>
     <string name="scientific_calculator">ವೈಜ್ಞಾನಿಕ ಕ್ಯಾಲ್ಕುಲೇಟರ್</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">ದೋಷ : ಶೂನ್ಯದಿಂದ ವಿಭಜನೆ</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrate on button press</string>
     <string name="use_comma_as_decimal_mark">ಅಲ್ಪವಿರಾಮವನ್ನು ದಶಮಾಂಶ ಚಿಹ್ನೆಯಾಗಿ ಬಳಸಿ</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">ಸಿ (ತೆರವುಗೊಳಿಸಿ) ಬಟನ್ ಹೇಗೆ ಕೆಲಸ ಮಾಡುತ್ತದೆ\?</string>
     <string name="faq_1_text">ಅದರ ಮೇಲೆ ಟ್ಯಾಪ್ ಮಾಡುವುದರಿಂದ ಒಂದು ಸಮಯದಲ್ಲಿ ಒಂದು ಅಕ್ಷರವನ್ನು ತೆಗೆದುಹಾಕಲಾಗುತ್ತದೆ. ದೀರ್ಘವಾಗಿ ಒತ್ತಿದರೆ ಎಲ್ಲಾ ಕ್ಷೇತ್ರಗಳನ್ನು ಒಂದೇ ಬಾರಿಗೆ ಮರುಹೊಂದಿಸುತ್ತದೆ.</string>

app/src/main/res/values-ko/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">간단한 계산기</string>
     <string name="app_launcher_name">계산기</string>
     <string name="scientific_calculator">과학 계산기</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">오류: 0으로 나누기</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">진동 버튼을 누릅니다</string>
     <string name="use_comma_as_decimal_mark">쉼표를 소수점으로 사용합니다</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">C(지우기) 버튼은 어떻게 작동합니까\?</string>
     <string name="faq_1_text">누르면 한 번에 한 문자씩 제거됩니다. 길게 누르면 모든 필드가 한 번에 재설정됩니다.</string>

app/src/main/res/values-kr/strings.xml

@@ -2,6 +2,8 @@
     <string name="app_name">심플한 계산기</string>
     <string name="app_launcher_name">계산기</string>
     <string name="scientific_calculator">공학용 계산기</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
 
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">에러: 공으로 나눌 할수 없어요</string>
@@ -15,6 +17,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">버튼 탭시 진동</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
 
     <!-- FAQ -->
     <string name="faq_1_title">C (Clear) 버튼을 어떻게 사용합니까?</string>

app/src/main/res/values-lt/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Paprastas skaičiuotuvas</string>
     <string name="app_launcher_name">Skaičiuotuvas</string>
     <string name="scientific_calculator">Mokslinis skaičiuotuvas</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Klaida: dalyba iš nulio</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibruoti, kai paspaudžiami mygtukai</string>
     <string name="use_comma_as_decimal_mark">Naudoti kablelį kaip dešimtainių dalių skirtuką</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Kaip veikia C (Išvalymo) mygtukas\?</string>
     <string name="faq_1_text">Kiekvieną kartą ant jo bakstelėjus, bus šalinama po vieną simbolį. Ilgai jį palaikius, bus iš karto atstatyti visi laukai.</string>

app/src/main/res/values-lv/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Vienkāršs kalkulators</string>
     <string name="app_launcher_name">Kalkulators</string>
     <string name="scientific_calculator">Zinātniskais kalkulators</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Kļūda: dalīšana ar nulli</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrēšana pēc pogas nospiešanas</string>
     <string name="use_comma_as_decimal_mark">Izmanto komatu kā decimālzīmi</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Kā darbojas poga C (Notīrīt)\?</string>
     <string name="faq_1_text">Pieskarieties tai, lai noņemtu vienu rakstzīmi vienlaikus. Ilgstoši nospiežot to, tiks atiestatīti visi lauki vienlaicīgi.</string>

app/src/main/res/values-mk/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Едноставен калкулатор</string>
     <string name="app_launcher_name">Калкулатор</string>
     <string name="scientific_calculator">Научен калкулатор</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Грешка: поделба по нула</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Вибрирајте на копчето притиснете</string>
     <string name="use_comma_as_decimal_mark">Користете замена како знак за децимален знак</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Како функционира копчето C (Clear) \?</string>
     <string name="faq_1_text">Прислушкувањето на него ќе отстрани еден лик во исто време. Долгото притискање ќе ги ресетира сите полиња одеднаш.</string>

app/src/main/res/values-ml/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">സിമ്പിൾ കാൽക്കുലേറ്റർ</string>
     <string name="app_launcher_name">കാൽക്കുലേറ്റർ</string>
     <string name="scientific_calculator">ശാസ്ത്രീയ കാൽക്കുലേറ്റർ</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">പിശക്: 0 കൊണ്ട് ഹരിക്കാനാവില്ല</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">ബട്ടൺ അമർത്തുമ്പോൾ വൈബ്രേറ്റ് ചെയ്യുക</string>
     <string name="use_comma_as_decimal_mark">ദശാംശ ചിഹ്നമായി കോമ(,) ഉപയോഗിക്കുക</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">C(ക്ലിയർ ) ബട്ടൺ പ്രവർത്തിക്കുന്നത് എങ്ങനെ\?</string>
     <string name="faq_1_text">ടാപ്പ് ചെയ്യുമ്പോൾ ഒരു സമയം ഒരു പ്രതീകത്തെ നീക്കംചെയ്യും. ദീർഘനേരം അമർത്തിയാൽ എല്ലാ ഫീൽഡുകളും പുനഃസജ്ജമാക്കും.</string>

app/src/main/res/values-ms/strings.xml

@@ -2,6 +2,8 @@
     <string name="app_name">Kalkulator Ringkas</string>
     <string name="app_launcher_name">Kalkulator</string>
     <string name="scientific_calculator">Kalkulator Saintifik</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
 
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Amaran: pembahagian dengan sifar</string>
@@ -15,6 +17,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Getar semasa butang ditekan</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
 
     <!-- FAQ -->
     <string name="faq_1_title">Bagaimana Butang C (Menghapus) Digunakan？</string>

app/src/main/res/values-nl/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Eenvoudige Rekenmachine</string>
     <string name="app_launcher_name">Rekenmachine</string>
     <string name="scientific_calculator">Wetenschappelijke Rekenmachine</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Fout: delen door nul</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Trillen bij het indrukken van toetsen</string>
     <string name="use_comma_as_decimal_mark">Komma als decimaalteken gebruiken</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Hoe werkt de knop C (Clear)\?</string>
     <string name="faq_1_text">Kort indrukken verwijdert één karakter per keer. Lang drukken wist direct alle velden.</string>

app/src/main/res/values-no-rNO/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Enkel kalkulator</string>
     <string name="app_launcher_name">Kalkulator</string>
     <string name="scientific_calculator">Vitenskapelig kalkulator</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">FeiL: Deling på null</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrer ved knappetrykk</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <string name="faq_1_title">Hvordan fungerer C (Clear)-knappen\?</string>
     <string name="faq_1_text">Å trykke på den fjerner ett tegn av gangen. Lang-trykk tilbakestiller alle felter.</string>
     <!--

app/src/main/res/values-pa-rPK/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">سادہ کیلکولیٹر</string>
     <string name="app_launcher_name">کیلکولیٹر</string>
     <string name="scientific_calculator">وگیانک کیلکولیٹر</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">غلطی آئی اے، صفر نال ونڈ</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrate on button press</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">How does the C (Clear) button work\?</string>
     <string name="faq_1_text">Tapping on it will remove one character at a time. Long pressing it will reset all fields at once.</string>

app/src/main/res/values-pl/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Prosty kalkulator</string>
     <string name="app_launcher_name">Kalkulator</string>
     <string name="scientific_calculator">Kalkulator naukowy</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Błąd: dzielenie przez zero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Wibracja przy naciśnięciu przycisku</string>
     <string name="use_comma_as_decimal_mark">Używaj przecinka jako separatora dziesiętnego</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Jak działa przycisk C (Wyczyść)?</string>
     <string name="faq_1_text">Naciśnięcie go usunie jeden znak naraz. Długie naciśnięcie zresetuje wszystkie pola jednocześnie.</string>

app/src/main/res/values-pt-rBR/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Calculadora Simples</string>
     <string name="app_launcher_name">Calculadora</string>
     <string name="scientific_calculator">Calculadora Científica</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Erro: divisão por zero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrar ao pressionar um botão</string>
     <string name="use_comma_as_decimal_mark">Usar virgula como marca decimal</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Como funciona o botão C (Clear)\?</string>
     <string name="faq_1_text">Um toque remove um caractere de cada vez. Um toque longo redefine todos os campos de uma vez.</string>

app/src/main/res/values-pt/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simple Calculator</string>
     <string name="app_launcher_name">Calculadora</string>
     <string name="scientific_calculator">Calculadora científica</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Erro: divisão por zero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrar ao tocar nos botões</string>
     <string name="use_comma_as_decimal_mark">Usar vírgula como separador decimal</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Como funciona o botão C (limpar)\?</string>
     <string name="faq_1_text">Ao tocar uma vez, os caracteres serão apagados um a um. Um toque longo apaga todos os caracteres ao mesmo tempo.</string>

app/src/main/res/values-ro/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Calculator simplu</string>
     <string name="app_launcher_name">Calculator</string>
     <string name="scientific_calculator">Calculator Ştiințific</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Eroare: împărțire la zero</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrează la apăsarea butoanelor</string>
     <string name="use_comma_as_decimal_mark">Utilizează virgula ca separator zecimal</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Cum funcționează butonul Ș (Șterge)\?</string>
     <string name="faq_1_text">Apăsând pe el, veți elimina câte un caracter pe rând. Apăsarea lungă va reseta toate câmpurile deodată.</string>

app/src/main/res/values-ru/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Простой калькулятор</string>
     <string name="app_launcher_name">Калькулятор</string>
     <string name="scientific_calculator">Научный калькулятор</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Ошибка: деление на ноль</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Вибрация при нажатии кнопок</string>
     <string name="use_comma_as_decimal_mark">Использовать запятую в качестве десятичного знака</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Как работает кнопка C (Очистка)\?</string>
     <string name="faq_1_text">Нажатие на неё удалит один символ. Долгое нажатие сбросит все поля сразу.</string>

app/src/main/res/values-sk/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Jednoduchá kalkulačka</string>
     <string name="app_launcher_name">Kalkulačka</string>
     <string name="scientific_calculator">Vedecká kalkulačka</string>
+    <string name="unit_converter">Prevodník jednotiek</string>
+    <string name="swap_units">Vymeniť jednotky</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Chyba: delenie nulou</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrovať pri stlačení tlačidla</string>
     <string name="use_comma_as_decimal_mark">Používať čiarku na oddelenie desatinných čísel</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Dĺžka</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Milimeter</string>
+    <string name="unit_length_micrometer">Mikrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Míľa</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Noha</string>
+    <string name="unit_length_inch">Palec</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Námorná míľa</string>
+    <string name="unit_length_astronomical_unit">Astronomická jednotka</string>
+    <string name="unit_length_parsec">Parsek</string>
+    <string name="unit_length_light_year">Svetelný rok</string>
+    <string name="unit_area">Plocha</string>
+    <string name="unit_area_square_kilometer">Kilometer štvorcový</string>
+    <string name="unit_area_square_meter">Meter štvorcový</string>
+    <string name="unit_area_square_centimeter">Centimeter štvorcový</string>
+    <string name="unit_area_square_millimeter">Milimeter štvorcový</string>
+    <string name="unit_area_square_mile">Míľa štvorcová</string>
+    <string name="unit_area_square_yard">Yard štvorcový</string>
+    <string name="unit_area_square_foot">Noha štvorcová</string>
+    <string name="unit_area_square_inch">Palec štvorcový</string>
+    <string name="unit_area_acre">Aker</string>
+    <string name="unit_area_hectare">Hektár</string>
+    <string name="unit_volume">Objem</string>
+    <string name="unit_volume_cubic_meter">Meter kubický</string>
+    <string name="unit_volume_cubic_decimeter">Decimeter kubický</string>
+    <string name="unit_volume_cubic_centimeter">Centimeter kubický</string>
+    <string name="unit_volume_cubic_millimeter">Milimeter kubický</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Mililiter</string>
+    <string name="unit_volume_acre_foot">Akrová noha</string>
+    <string name="unit_volume_cubic_foot">Noha kubická</string>
+    <string name="unit_volume_cubic_inch">Palec kubický</string>
+    <string name="unit_volume_barrel_us">Sud (US)</string>
+    <string name="unit_volume_gallon_us">Galón (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pinta (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Tekutá unca (US)</string>
+    <string name="unit_volume_barrel_imperial">Barel (Imperiálny)</string>
+    <string name="unit_volume_gallon_imperial">Galón (Imperiálny)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperiálny)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperiálny)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperiálny)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Tekutá unca (Imperiálna)</string>
+    <string name="unit_mass">Hmotnosť</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Miligram</string>
+    <string name="unit_mass_microgram">Mikrogram</string>
+    <string name="unit_mass_tonne">Tona</string>
+    <string name="unit_mass_pound">Libra</string>
+    <string name="unit_mass_ounce">Uncia</string>
+    <string name="unit_mass_grain">Zrno</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Kameň</string>
+    <string name="unit_mass_long_ton">Dlhá tona</string>
+    <string name="unit_mass_short_ton">Krátka tona</string>
+    <string name="unit_mass_carat">Karát</string>
+    <string name="unit_mass_carat_metric">Karát (Metrický)</string>
+    <string name="unit_temperature">Teplota</string>
+    <string name="unit_temperature_celsius">Celzius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Čas</string>
+    <string name="unit_time_hour">Hodina</string>
+    <string name="unit_time_minute">Minúta</string>
+    <string name="unit_time_second">Sekunda</string>
+    <string name="unit_time_millisecond">Mikrosekunda</string>
+    <string name="unit_time_day">Deň</string>
+    <string name="unit_time_week">Týždeň</string>
+    <string name="unit_time_year">Rok</string>
     <!-- FAQ -->
     <string name="faq_1_title">Ako funguje tlačidlo C?</string>
     <string name="faq_1_text">Jedným stlačením viete vymazať 1 znak. Dlhé podržanie vymaže všetky polia naraz.</string>

app/src/main/res/values-sl/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Preprost kalkulator</string>
     <string name="app_launcher_name">Kalkulator</string>
     <string name="scientific_calculator">Znanstveni kalkulator</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <string name="formula_divide_by_zero_error">Napaka: deljenje z ničlo</string>
     <string name="history">Zgodovina</string>
     <string name="history_empty">Zgodovina je prazna</string>
@@ -10,6 +12,87 @@
     <string name="history_cleared">Zgodovina je bila izbrisana</string>
     <string name="vibrate_on_button_press">Vibriraj ob pritisku gumba</string>
     <string name="use_comma_as_decimal_mark">Uporabite vejico kot decimalno znamenje</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <string name="faq_1_title">Kako deluje gumb C (Clear)\?</string>
     <string name="faq_1_text">Če ga stisnete, odstranite po en lik naenkrat. Z dolgim pritiskom nanj boste odstranili vsa polja naenkrat.</string>
 </resources>

app/src/main/res/values-sr/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Једноставан калкулатор</string>
     <string name="app_launcher_name">Калкулатор</string>
     <string name="scientific_calculator">Научни калкулатор</string>
+    <string name="unit_converter">Претварач јединица</string>
+    <string name="swap_units">Замијени јединице</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Грешка : дељење нулом</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Вибрирајте притиснути дугметом</string>
     <string name="use_comma_as_decimal_mark">Коришћење зареза као децималног знака</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Дужина</string>
+    <string name="unit_length_kilometer">Километар</string>
+    <string name="unit_length_meter">Метар</string>
+    <string name="unit_length_centimeter">Центиметар</string>
+    <string name="unit_length_millimeter">Милиметар</string>
+    <string name="unit_length_micrometer">Микрометар</string>
+    <string name="unit_length_nanometer">Нанометар</string>
+    <string name="unit_length_angstrom">Ангстром</string>
+    <string name="unit_length_mile">Миља</string>
+    <string name="unit_length_yard">Јард</string>
+    <string name="unit_length_foot">Стопа</string>
+    <string name="unit_length_inch">Палац</string>
+    <string name="unit_length_fathom">Фатом</string>
+    <string name="unit_length_nautical_mile">Наутичка миља</string>
+    <string name="unit_length_astronomical_unit">Астрономска јединица</string>
+    <string name="unit_length_parsec">Парсек</string>
+    <string name="unit_length_light_year">Светлосна година</string>
+    <string name="unit_area">Површина</string>
+    <string name="unit_area_square_kilometer">Квадратни километар</string>
+    <string name="unit_area_square_meter">Квадратни метар</string>
+    <string name="unit_area_square_centimeter">Квадратни центиметар</string>
+    <string name="unit_area_square_millimeter">Квадратни милиметар</string>
+    <string name="unit_area_square_mile">Квадратна милја</string>
+    <string name="unit_area_square_yard">Квадратни јард</string>
+    <string name="unit_area_square_foot">Квадратна стопа</string>
+    <string name="unit_area_square_inch">Квадратни палац</string>
+    <string name="unit_area_acre">Акер</string>
+    <string name="unit_area_hectare">Хектар</string>
+    <string name="unit_volume">Запремина</string>
+    <string name="unit_volume_cubic_meter">Кубни метар</string>
+    <string name="unit_volume_cubic_decimeter">Кубни дециметар</string>
+    <string name="unit_volume_cubic_centimeter">Кубни центиметар</string>
+    <string name="unit_volume_cubic_millimeter">Кубни милиметар</string>
+    <string name="unit_volume_liter">Литар</string>
+    <string name="unit_volume_centiliter">Центилитар</string>
+    <string name="unit_volume_deciliter">Децилитар</string>
+    <string name="unit_volume_milliliter">Милилитар</string>
+    <string name="unit_volume_acre_foot">Акер стопа</string>
+    <string name="unit_volume_cubic_foot">Кубна стопа</string>
+    <string name="unit_volume_cubic_inch">Кубни палац</string>
+    <string name="unit_volume_barrel_us">Барел (САД)</string>
+    <string name="unit_volume_gallon_us">Галон (САД)</string>
+    <string name="unit_volume_quart_us">Четвртина (САД)</string>
+    <string name="unit_volume_pint_us">Пинта (САД)</string>
+    <string name="unit_volume_gill_us">Гил (САД)</string>
+    <string name="unit_volume_fluid_ounce_us">Текућа унца (САД)</string>
+    <string name="unit_volume_barrel_imperial">Барел (Империјални)</string>
+    <string name="unit_volume_gallon_imperial">Галон (Империјални)</string>
+    <string name="unit_volume_quart_imperial">Четвртина (Империјални)</string>
+    <string name="unit_volume_pint_imperial">Пинта (Империјални)</string>
+    <string name="unit_volume_gill_imperial">Гил (Империјални)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Текућа унца (Империјални)</string>
+    <string name="unit_mass">Маса</string>
+    <string name="unit_mass_gram">Грам</string>
+    <string name="unit_mass_kilogram">Килограм</string>
+    <string name="unit_mass_milligram">Милиграм</string>
+    <string name="unit_mass_microgram">Микрограм</string>
+    <string name="unit_mass_tonne">Тона</string>
+    <string name="unit_mass_pound">Фунта</string>
+    <string name="unit_mass_ounce">Унца</string>
+    <string name="unit_mass_grain">Граин</string>
+    <string name="unit_mass_dram">Драм</string>
+    <string name="unit_mass_stone">Стоне</string>
+    <string name="unit_mass_long_ton">Лонг тона</string>
+    <string name="unit_mass_short_ton">Шорт тона</string>
+    <string name="unit_mass_carat">Карат</string>
+    <string name="unit_mass_carat_metric">Карат (Метричнки)</string>
+    <string name="unit_temperature">Температуре</string>
+    <string name="unit_temperature_celsius">Целзијус</string>
+    <string name="unit_temperature_fahrenheit">Фаренхајт</string>
+    <string name="unit_temperature_rankine">Ранкин</string>
+    <string name="unit_temperature_kelvin">Келвин</string>
+    <string name="unit_time">Време</string>
+    <string name="unit_time_hour">Сат</string>
+    <string name="unit_time_minute">Минута</string>
+    <string name="unit_time_second">Секунда</string>
+    <string name="unit_time_millisecond">Милисекунда</string>
+    <string name="unit_time_day">Дан</string>
+    <string name="unit_time_week">Седмица</string>
+    <string name="unit_time_year">Година</string>
     <!-- FAQ -->
     <string name="faq_1_title">Како дугме Ц (Обриши) функционише\?</string>
     <string name="faq_1_text">Додиривање на њега ће уклонити један по један знак. Дуго притискање ће успоставити почетне вредности свих поља одједном.</string>

app/src/main/res/values-sv/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simpel kalkylator</string>
     <string name="app_launcher_name">Kalkylator</string>
     <string name="scientific_calculator">Avancerad kalkylator</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Fel: delning med noll</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrera när jag trycker på knapparna</string>
     <string name="use_comma_as_decimal_mark">Använd komma som decimaltecken</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Hur funkar C (Rensa) knappen\?</string>
     <string name="faq_1_text">Om du trycker på den tar du bort ett tecken i taget. Om du trycker länge på den återställs alla fält på en gång.</string>

app/src/main/res/values-ta/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">எளிய கால்குலேட்டர்</string>
     <string name="app_launcher_name">கால்குலேட்டர்</string>
     <string name="scientific_calculator">அறிவியல் கால்குலேட்டர்</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">பிழை: பூஜ்ஜியத்தால் வகுத்தல்</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrate on button press</string>
     <string name="use_comma_as_decimal_mark">கமாவை தசம குறியாகப் பயன்படுத்தவும்</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">சி (தெளிவு) பொத்தான் எப்படி வேலை செய்கிறது\?</string>
     <string name="faq_1_text">அதைத் தட்டினால் ஒரு நேரத்தில் ஒரு எழுத்து நீக்கப்படும். நீண்ட நேரம் அழுத்தினால், எல்லாப் புலங்களையும் ஒரே நேரத்தில் மீட்டமைக்கும்.</string>

app/src/main/res/values-te/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">సాధారణ కాలిక్యులేటర్</string>
     <string name="app_launcher_name">గనన యంత్రము</string>
     <string name="scientific_calculator">శాస్త్రీయ గనన యంత్రము</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">లోపం: సున్నాతో భాగించటం</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrate on button press</string>
     <string name="use_comma_as_decimal_mark">కామాను దశాంశ గుర్తుగా ఉపయోగించండి</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">C (క్లియర్) బటన్ ఎలా పని చేస్తుంది\?</string>
     <string name="faq_1_text">దానిపై నొక్కడం ద్వారా ఒక్కో అక్షరం తీసివేయబడుతుంది. ఎక్కువసేపు నొక్కితే, అన్ని ఫీల్డ్‌లు ఒకేసారి రీసెట్ చేయబడతాయి.</string>

app/src/main/res/values-th/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simple Calculator</string>
     <string name="app_launcher_name">Calculator</string>
     <string name="scientific_calculator">Scientific Calculator</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
 
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Error: division by zero</string>
@@ -16,6 +18,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Vibrate on button press</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
 
     <!-- FAQ -->
     <string name="faq_1_title">How does the C (Clear) button work?</string>

app/src/main/res/values-tr/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Basit Hesap Makinesi</string>
     <string name="app_launcher_name">Hesap Makinesi</string>
     <string name="scientific_calculator">Bilimsel Hesap Makinesi</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Hata: sıfıra bölme</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Düğmeye basıldığında titret</string>
     <string name="use_comma_as_decimal_mark">Ondalık işareti olarak virgül kullan</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">C (Temizle) düğmesi nasıl çalışır?</string>
     <string name="faq_1_text">Üzerine dokunmak, bir seferde bir karakteri kaldıracaktır. Uzun basma, tüm alanları bir kerede sıfırlayacaktır.</string>

app/src/main/res/values-uk/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Простий Калькулятор</string>
     <string name="app_launcher_name">Калькулятор</string>
     <string name="scientific_calculator">Науковий Калькулятор</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Помилка: ділення на нуль</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">Вібрувати з натиском кнопок</string>
     <string name="use_comma_as_decimal_mark">Як десятковий знак використовувати кому</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">Як працює кнопка C (Очистити)?</string>
     <string name="faq_1_text">Короткий натиск видалить один символ за раз. Тривалий натиск одразу очистить всі поля.</string>

app/src/main/res/values-zgh/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">ⵜⴰⵙⵎⵙⵙⵉⴹⵏⵜ ⵜⴰⴼⵔⴰⵔⵜ</string>
     <string name="app_launcher_name">ⵜⴰⵙⵎⵙⵙⵉⴹⵏⵜ</string>
     <string name="scientific_calculator">ⵜⴰⵙⵎⵙⵙⵉⴹⵏⵜ ⵜⴰⵎⴰⵙⵙⴰⵏⵜ</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">ⵜⴰⵣⴳⵍⵜ: ⴰⴱⵟⵟⵓ ⵅⴼ ⵓⵎⵢⴰ</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">ⴰⵔⵎⵉⵎⵎⵉ ⴳ ⵡⴰⴱⴱⴰⵥ ⵅⴼ ⵜⴳⵎⵎⵓⵜⵉⵏ</string>
     <string name="use_comma_as_decimal_mark">ⵙⵎⵔⵙ ⵜⵉⵙⴽⵔⵜ ⴷ ⵜⴰⵎⴰⵜⴰⵔⵜ ⵜⴰⵎⵔⴰⵡⴰⵏⵜ</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">ⵎⴰⵎⴽ ⵜⵙⵡⵓⵔⵓⵢ ⵜⴳⵎⵎⵓⵜ C (ⴽⴽⵙ)\?</string>
     <string name="faq_1_text">ⴰⴱⴱⴰⵥ ⵅⴼ ⵓⵢⵏⵏⴰ ⴰⴷ ⵉⴽⴽⵙ ⵢⴰⵏ ⵓⵙⴽⴽⵉⵍ ⴳ ⵢⴰⵏ ⵓⵣⵎⵣ. ⵎⵛ ⵉⵍⵍⴰ ⵡⴰⴱⴱⴰⵥ ⴰⵙⵓⵍⴰⵏ ⵔⴰⴷ ⵜⵜⵓⵙⵏⴼⵍⵏ ⵎⴰⵕⵕⴰ ⵉⴳⵔⴰⵏ ⴳ ⵢⴰⵏ ⵓⵣⵎⵣ.</string>

app/src/main/res/values-zh-rCN/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">简单计算器</string>
     <string name="app_launcher_name">计算器</string>
     <string name="scientific_calculator">科学计算器</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">错误: 被零除</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">按下按键后震动</string>
     <string name="use_comma_as_decimal_mark">用逗号作小数点</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">如何使用 C (清除) 按钮？</string>
     <string name="faq_1_text">点按它一次删除一个字母。长按它将立即重置所有字段。</string>

app/src/main/res/values-zh-rTW/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">簡易計算機</string>
     <string name="app_launcher_name">計算機</string>
     <string name="scientific_calculator">科學計算機</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">錯誤：除以零</string>
     <!-- History -->
@@ -13,6 +15,87 @@
     <!-- Settings -->
     <string name="vibrate_on_button_press">按下按鈕時震動</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
     <!-- FAQ -->
     <string name="faq_1_title">C（清除）按鈕如何使用？</string>
     <string name="faq_1_text">按一次會刪除一個字元。長按會馬上重設全部欄位。</string>

app/src/main/res/values/dimens.xml

@@ -8,4 +8,8 @@
     <dimen name="button_text_size">34sp</dimen>
     <dimen name="formula_text_size">20sp</dimen>
     <dimen name="display_text_size">40sp</dimen>
+
+    <dimen name="unit_type_size">120dp</dimen>
+    <dimen name="unit_symbol_size">40dp</dimen>
+    <dimen name="unit_switch_button_size">64dp</dimen>
 </resources>

app/src/main/res/values/donottranslate.xml

@@ -2,6 +2,82 @@
 <resources>
     <string name="package_name">com.simplemobiletools.calculator</string>
 
+    <string name="unit_name_with_symbol_format">%s (%s)</string>
+    <string name="unit_length_kilometer_symbol">km</string>
+    <string name="unit_length_meter_symbol">m</string>
+    <string name="unit_length_centimeter_symbol">cm</string>
+    <string name="unit_length_millimeter_symbol">mm</string>
+    <string name="unit_length_micrometer_symbol">μm</string>
+    <string name="unit_length_nanometer_symbol">nm</string>
+    <string name="unit_length_angstrom_symbol">Å</string>
+    <string name="unit_length_mile_symbol">mi</string>
+    <string name="unit_length_yard_symbol">yd</string>
+    <string name="unit_length_foot_symbol">ft</string>
+    <string name="unit_length_inch_symbol">in</string>
+    <string name="unit_length_fathom_symbol">fathom</string>
+    <string name="unit_length_nautical_mile_symbol">NM</string>
+    <string name="unit_length_astronomical_unit_symbol">au</string>
+    <string name="unit_length_parsec_symbol">pc</string>
+    <string name="unit_length_light_year_symbol">ly</string>
+    <string name="unit_area_square_kilometer_symbol">km²</string>
+    <string name="unit_area_square_meter_symbol">m²</string>
+    <string name="unit_area_square_centimeter_symbol">cm²</string>
+    <string name="unit_area_square_millimeter_symbol">mm²</string>
+    <string name="unit_area_square_mile_symbol">sq mi</string>
+    <string name="unit_area_square_yard_symbol">sq yd</string>
+    <string name="unit_area_square_foot_symbol">sq ft</string>
+    <string name="unit_area_square_inch_symbol">sq in</string>
+    <string name="unit_area_acre_symbol">ac</string>
+    <string name="unit_area_hectare_symbol">ha</string>
+    <string name="unit_volume_cubic_meter_symbol">m³</string>
+    <string name="unit_volume_cubic_decimeter_symbol">dm³</string>
+    <string name="unit_volume_cubic_centimeter_symbol">cm³</string>
+    <string name="unit_volume_cubic_millimeter_symbol">mm³</string>
+    <string name="unit_volume_liter_symbol">L</string>
+    <string name="unit_volume_centiliter_symbol">cL</string>
+    <string name="unit_volume_deciliter_symbol">dL</string>
+    <string name="unit_volume_milliliter_symbol">mL</string>
+    <string name="unit_volume_acre_foot_symbol">ac ft</string>
+    <string name="unit_volume_cubic_foot_symbol">ft³</string>
+    <string name="unit_volume_cubic_inch_symbol">in³</string>
+    <string name="unit_volume_barrel_us_symbol">fl bl (US)</string>
+    <string name="unit_volume_gallon_us_symbol">gal (US)</string>
+    <string name="unit_volume_quart_us_symbol">qt (US)</string>
+    <string name="unit_volume_pint_us_symbol">pt (US fl)</string>
+    <string name="unit_volume_gill_us_symbol">gi (US)</string>
+    <string name="unit_volume_fluid_ounce_us_symbol">US fl oz</string>
+    <string name="unit_volume_barrel_imperial_symbol">bl (imp)</string>
+    <string name="unit_volume_gallon_imperial_symbol">gal (imp)</string>
+    <string name="unit_volume_quart_imperial_symbol">qt (imp)</string>
+    <string name="unit_volume_pint_imperial_symbol">pt (imp)</string>
+    <string name="unit_volume_gill_imperial_symbol">gi (imp)</string>
+    <string name="unit_volume_fluid_ounce_imperial_symbol">fl oz (imp)</string>
+    <string name="unit_mass_gram_symbol">g</string>
+    <string name="unit_mass_kilogram_symbol">kg</string>
+    <string name="unit_mass_milligram_symbol">mg</string>
+    <string name="unit_mass_microgram_symbol">μm</string>
+    <string name="unit_mass_tonne_symbol">t</string>
+    <string name="unit_mass_pound_symbol">lb</string>
+    <string name="unit_mass_ounce_symbol">oz</string>
+    <string name="unit_mass_grain_symbol">gr</string>
+    <string name="unit_mass_dram_symbol">dr</string>
+    <string name="unit_mass_stone_symbol">st</string>
+    <string name="unit_mass_long_ton_symbol">ton</string>
+    <string name="unit_mass_short_ton_symbol">sh tn</string>
+    <string name="unit_mass_carat_symbol">kt</string>
+    <string name="unit_mass_carat_metric_symbol">ct</string>
+    <string name="unit_temperature_celsius_symbol">°C</string>
+    <string name="unit_temperature_fahrenheit_symbol">°F</string>
+    <string name="unit_temperature_rankine_symbol">°R</string>
+    <string name="unit_temperature_kelvin_symbol">K</string>
+    <string name="unit_time_hour_symbol">h</string>
+    <string name="unit_time_minute_symbol">m</string>
+    <string name="unit_time_second_symbol">s</string>
+    <string name="unit_time_millisecond_symbol">ms</string>
+    <string name="unit_time_day_symbol">d</string>
+    <string name="unit_time_week_symbol">wk</string>
+    <string name="unit_time_year_symbol">y</string>
+
     <!-- Release notes -->
     <string name="release_28">Allow customizing the bottom navigation bar color</string>
     <string name="release_18">Added a toggle for preventing the phone from sleeping, enabled by default</string>

app/src/main/res/values/strings.xml

@@ -3,6 +3,8 @@
     <string name="app_name">Simple Calculator</string>
     <string name="app_launcher_name">Calculator</string>
     <string name="scientific_calculator">Scientific Calculator</string>
+    <string name="unit_converter">Unit converter</string>
+    <string name="swap_units">Swap units</string>
 
     <!-- Calculator field -->
     <string name="formula_divide_by_zero_error">Error: division by zero</string>
@@ -17,6 +19,88 @@
     <string name="vibrate_on_button_press">Vibrate on button press</string>
     <string name="use_comma_as_decimal_mark">Use comma as a decimal mark</string>
 
+    <!-- Unit converter -->
+    <string name="unit_length">Length</string>
+    <string name="unit_length_kilometer">Kilometer</string>
+    <string name="unit_length_meter">Meter</string>
+    <string name="unit_length_centimeter">Centimeter</string>
+    <string name="unit_length_millimeter">Millimeter</string>
+    <string name="unit_length_micrometer">Micrometer</string>
+    <string name="unit_length_nanometer">Nanometer</string>
+    <string name="unit_length_angstrom">Angstrom</string>
+    <string name="unit_length_mile">Mile</string>
+    <string name="unit_length_yard">Yard</string>
+    <string name="unit_length_foot">Foot</string>
+    <string name="unit_length_inch">Inch</string>
+    <string name="unit_length_fathom">Fathom</string>
+    <string name="unit_length_nautical_mile">Nautical Mile</string>
+    <string name="unit_length_astronomical_unit">Astronomical Unit</string>
+    <string name="unit_length_parsec">Parsec</string>
+    <string name="unit_length_light_year">Light Year</string>
+    <string name="unit_area">Area</string>
+    <string name="unit_area_square_kilometer">Square Kilometer</string>
+    <string name="unit_area_square_meter">Square Meter</string>
+    <string name="unit_area_square_centimeter">Square Centimeter</string>
+    <string name="unit_area_square_millimeter">Square Millimeter</string>
+    <string name="unit_area_square_mile">Square Mile</string>
+    <string name="unit_area_square_yard">Square Yard</string>
+    <string name="unit_area_square_foot">Square Foot</string>
+    <string name="unit_area_square_inch">Square Inch</string>
+    <string name="unit_area_acre">Acre</string>
+    <string name="unit_area_hectare">Hectare</string>
+    <string name="unit_volume">Volume</string>
+    <string name="unit_volume_cubic_meter">Cubic Meter</string>
+    <string name="unit_volume_cubic_decimeter">Cubic Decimeter</string>
+    <string name="unit_volume_cubic_centimeter">Cubic Centimeter</string>
+    <string name="unit_volume_cubic_millimeter">Cubic Millimeter</string>
+    <string name="unit_volume_liter">Liter</string>
+    <string name="unit_volume_centiliter">Centiliter</string>
+    <string name="unit_volume_deciliter">Deciliter</string>
+    <string name="unit_volume_milliliter">Milliliter</string>
+    <string name="unit_volume_acre_foot">Acre Foot</string>
+    <string name="unit_volume_cubic_foot">Cubic Foot</string>
+    <string name="unit_volume_cubic_inch">Cubic Inch</string>
+    <string name="unit_volume_barrel_us">Barrel (US)</string>
+    <string name="unit_volume_gallon_us">Gallon (US)</string>
+    <string name="unit_volume_quart_us">Quart (US)</string>
+    <string name="unit_volume_pint_us">Pint (US)</string>
+    <string name="unit_volume_gill_us">Gill (US)</string>
+    <string name="unit_volume_fluid_ounce_us">Fluid Ounce (US)</string>
+    <string name="unit_volume_barrel_imperial">Barrel (Imperial)</string>
+    <string name="unit_volume_gallon_imperial">Gallon (Imperial)</string>
+    <string name="unit_volume_quart_imperial">Quart (Imperial)</string>
+    <string name="unit_volume_pint_imperial">Pint (Imperial)</string>
+    <string name="unit_volume_gill_imperial">Gill (Imperial)</string>
+    <string name="unit_volume_fluid_ounce_imperial">Fluid Ounce (Imperial)</string>
+    <string name="unit_mass">Mass</string>
+    <string name="unit_mass_gram">Gram</string>
+    <string name="unit_mass_kilogram">Kilogram</string>
+    <string name="unit_mass_milligram">Milligram</string>
+    <string name="unit_mass_microgram">Microgram</string>
+    <string name="unit_mass_tonne">Tonne</string>
+    <string name="unit_mass_pound">Pound</string>
+    <string name="unit_mass_ounce">Ounce</string>
+    <string name="unit_mass_grain">Grain</string>
+    <string name="unit_mass_dram">Dram</string>
+    <string name="unit_mass_stone">Stone</string>
+    <string name="unit_mass_long_ton">Long Ton</string>
+    <string name="unit_mass_short_ton">Short Ton</string>
+    <string name="unit_mass_carat">Carat</string>
+    <string name="unit_mass_carat_metric">Carat (Metric)</string>
+    <string name="unit_temperature">Temperature</string>
+    <string name="unit_temperature_celsius">Celsius</string>
+    <string name="unit_temperature_fahrenheit">Fahrenheit</string>
+    <string name="unit_temperature_rankine">Rankine</string>
+    <string name="unit_temperature_kelvin">Kelvin</string>
+    <string name="unit_time">Time</string>
+    <string name="unit_time_hour">Hour</string>
+    <string name="unit_time_minute">Minute</string>
+    <string name="unit_time_second">Second</string>
+    <string name="unit_time_millisecond">Microsecond</string>
+    <string name="unit_time_day">Day</string>
+    <string name="unit_time_week">Week</string>
+    <string name="unit_time_year">Year</string>
+
     <!-- FAQ -->
     <string name="faq_1_title">How does the C (Clear) button work?</string>
     <string name="faq_1_text">Tapping on it will remove one character at a time. Long pressing it will reset all fields at once.</string>

gradle/libs.versions.toml

@@ -20,7 +20,7 @@ exp4j = "0.4.8"
 #Room
 room = "2.5.2"
 #Simple tools
-simple-commons = "7c1e5b5777"
+simple-commons = "65105a24a2"
 #Gradle
 gradlePlugins-agp = "8.1.1"
 #build