diff --git a/CHANGELOG.md b/CHANGELOG.md
index f87b577c..b2917476 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Energy unit converter ([#192])
+- Pressure unit converter ([#191])
+- Speed unit converter ([#190])
 
 ### Fixed
 - Fixed issue that occurs after doing a percent operation ([#160])
@@ -64,6 +68,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#44]: https://github.com/FossifyOrg/Calculator/issues/44
 [#64]: https://github.com/FossifyOrg/Calculator/issues/64
 [#160]: https://github.com/FossifyOrg/Calculator/issues/160
+[#190]: https://github.com/FossifyOrg/Calculator/issues/190
+[#191]: https://github.com/FossifyOrg/Calculator/issues/191
+[#192]: https://github.com/FossifyOrg/Calculator/issues/192
 
 [Unreleased]: https://github.com/FossifyOrg/Calculator/compare/1.2.0...HEAD
 [1.2.0]: https://github.com/FossifyOrg/Calculator/compare/1.1.0...1.2.0
diff --git a/app/src/main/kotlin/org/fossify/math/helpers/converters/Base.kt b/app/src/main/kotlin/org/fossify/math/helpers/converters/Base.kt
index 06c4756b..71d50a0c 100644
--- a/app/src/main/kotlin/org/fossify/math/helpers/converters/Base.kt
+++ b/app/src/main/kotlin/org/fossify/math/helpers/converters/Base.kt
@@ -13,7 +13,10 @@ interface Converter {
             VolumeConverter,
             MassConverter,
             TemperatureConverter,
-            TimeConverter
+            TimeConverter,
+            SpeedConverter,
+            PressureConverter,
+            EnergyConverter
         )
     }
 
diff --git a/app/src/main/kotlin/org/fossify/math/helpers/converters/EnergyConverter.kt b/app/src/main/kotlin/org/fossify/math/helpers/converters/EnergyConverter.kt
new file mode 100644
index 00000000..b8edc623
--- /dev/null
+++ b/app/src/main/kotlin/org/fossify/math/helpers/converters/EnergyConverter.kt
@@ -0,0 +1,144 @@
+package org.fossify.math.helpers.converters
+
+import org.fossify.math.R
+import java.math.BigDecimal
+
+/***
+ * Base unit: joule.
+ *
+ * References:
+ * - https://en.wikipedia.org/wiki/Joule
+ * - https://en.wikipedia.org/wiki/Calorie
+ * - https://en.wikipedia.org/wiki/Kilowatt-hour
+ * - https://en.wikipedia.org/wiki/Electronvolt
+ * - https://en.wikipedia.org/wiki/British_thermal_unit
+ * - https://en.wikipedia.org/wiki/Foot-pound_(energy)
+ * - https://en.wikipedia.org/wiki/Erg
+ * - https://en.wikipedia.org/wiki/Therm
+ */
+object EnergyConverter : Converter {
+    override val nameResId: Int = R.string.unit_energy
+    override val imageResId: Int = R.drawable.ic_energy_vector
+    override val key: String = "EnergyConverter"
+
+    sealed class Unit(nameResId: Int, symbolResId: Int, factor: BigDecimal, key: String) :
+        Converter.Unit(nameResId, symbolResId, factor, key) {
+        data object Joule : Unit(
+            nameResId = R.string.unit_energy_joule,
+            symbolResId = R.string.unit_energy_joule_symbol,
+            factor = BigDecimal.ONE,
+            key = "Joule"
+        )
+
+        data object Kilojoule : Unit(
+            nameResId = R.string.unit_energy_kilojoule,
+            symbolResId = R.string.unit_energy_kilojoule_symbol,
+            factor = BigDecimal("1000"),
+            key = "Kilojoule"
+        )
+
+        data object Megajoule : Unit(
+            nameResId = R.string.unit_energy_megajoule,
+            symbolResId = R.string.unit_energy_megajoule_symbol,
+            factor = BigDecimal("1000000"),
+            key = "Megajoule"
+        )
+
+        data object Gigajoule : Unit(
+            nameResId = R.string.unit_energy_gigajoule,
+            symbolResId = R.string.unit_energy_gigajoule_symbol,
+            factor = BigDecimal("1000000000"),
+            key = "Gigajoule"
+        )
+
+        data object Calorie : Unit(
+            nameResId = R.string.unit_energy_calorie,
+            symbolResId = R.string.unit_energy_calorie_symbol,
+            factor = BigDecimal("4.184"),
+            key = "Calorie"
+        )
+
+        data object Kilocalorie : Unit(
+            nameResId = R.string.unit_energy_kilocalorie,
+            symbolResId = R.string.unit_energy_kilocalorie_symbol,
+            factor = BigDecimal("4184"),
+            key = "Kilocalorie"
+        )
+
+        data object WattHour : Unit(
+            nameResId = R.string.unit_energy_watt_hour,
+            symbolResId = R.string.unit_energy_watt_hour_symbol,
+            factor = BigDecimal("3600"),
+            key = "WattHour"
+        )
+
+        data object KilowattHour : Unit(
+            nameResId = R.string.unit_energy_kilowatt_hour,
+            symbolResId = R.string.unit_energy_kilowatt_hour_symbol,
+            factor = BigDecimal("3600000"),
+            key = "KilowattHour"
+        )
+
+        data object MegawattHour : Unit(
+            nameResId = R.string.unit_energy_megawatt_hour,
+            symbolResId = R.string.unit_energy_megawatt_hour_symbol,
+            factor = BigDecimal("3600000000"),
+            key = "MegawattHour"
+        )
+
+        data object Electronvolt : Unit(
+            nameResId = R.string.unit_energy_electronvolt,
+            symbolResId = R.string.unit_energy_electronvolt_symbol,
+            factor = BigDecimal("1.602176634E-19"),
+            key = "Electronvolt"
+        )
+
+        data object BritishThermalUnit : Unit(
+            nameResId = R.string.unit_energy_btu,
+            symbolResId = R.string.unit_energy_btu_symbol,
+            factor = BigDecimal("1055.05585262"),
+            key = "BritishThermalUnit"
+        )
+
+        data object Therm : Unit(
+            nameResId = R.string.unit_energy_therm,
+            symbolResId = R.string.unit_energy_therm_symbol,
+            factor = BigDecimal("105505585.262"),
+            key = "Therm"
+        )
+
+        data object FootPound : Unit(
+            nameResId = R.string.unit_energy_foot_pound,
+            symbolResId = R.string.unit_energy_foot_pound_symbol,
+            factor = BigDecimal("1.3558179483314004"),
+            key = "FootPound"
+        )
+
+        data object Erg : Unit(
+            nameResId = R.string.unit_energy_erg,
+            symbolResId = R.string.unit_energy_erg_symbol,
+            factor = BigDecimal("0.0000001"),
+            key = "Erg"
+        )
+    }
+
+    override val units: List<Unit> = listOf(
+        Unit.Joule,
+        Unit.Kilojoule,
+        Unit.Megajoule,
+        Unit.Gigajoule,
+        Unit.Calorie,
+        Unit.Kilocalorie,
+        Unit.WattHour,
+        Unit.KilowattHour,
+        Unit.MegawattHour,
+        Unit.Electronvolt,
+        Unit.BritishThermalUnit,
+        Unit.Therm,
+        Unit.FootPound,
+        Unit.Erg,
+    )
+
+    override val defaultTopUnit: Unit = Unit.Kilocalorie
+    override val defaultBottomUnit: Unit = Unit.Kilojoule
+}
diff --git a/app/src/main/kotlin/org/fossify/math/helpers/converters/PressureConverter.kt b/app/src/main/kotlin/org/fossify/math/helpers/converters/PressureConverter.kt
new file mode 100644
index 00000000..7f707344
--- /dev/null
+++ b/app/src/main/kotlin/org/fossify/math/helpers/converters/PressureConverter.kt
@@ -0,0 +1,109 @@
+package org.fossify.math.helpers.converters
+
+import org.fossify.math.R
+import java.math.BigDecimal
+
+/**
+ * Base unit: pascal.
+ *
+ * Main references:
+ * - https://en.wikipedia.org/wiki/Pascal_(unit)
+ * - https://en.wikipedia.org/wiki/Bar_(unit)
+ * - https://en.wikipedia.org/wiki/Atmosphere_(unit)
+ * - https://en.wikipedia.org/wiki/Pounds_per_square_inch
+ * - https://en.wikipedia.org/wiki/Torr
+ * - https://en.wikipedia.org/wiki/Millimetre_of_mercury
+ */
+object PressureConverter : Converter {
+    override val nameResId: Int = R.string.unit_pressure
+    override val imageResId: Int = R.drawable.ic_pressure_vector
+    override val key: String = "PressureConverter"
+
+    sealed class Unit(nameResId: Int, symbolResId: Int, factor: BigDecimal, key: String) :
+        Converter.Unit(nameResId, symbolResId, factor, key) {
+        data object Pascal : Unit(
+            nameResId = R.string.unit_pressure_pascal,
+            symbolResId = R.string.unit_pressure_pascal_symbol,
+            factor = BigDecimal.ONE,
+            key = "Pascal"
+        )
+
+        data object Kilopascal : Unit(
+            nameResId = R.string.unit_pressure_kilopascal,
+            symbolResId = R.string.unit_pressure_kilopascal_symbol,
+            factor = BigDecimal("1000"),
+            key = "Kilopascal"
+        )
+
+        data object Megapascal : Unit(
+            nameResId = R.string.unit_pressure_megapascal,
+            symbolResId = R.string.unit_pressure_megapascal_symbol,
+            factor = BigDecimal("1000000"),
+            key = "Megapascal"
+        )
+
+        data object Bar : Unit(
+            nameResId = R.string.unit_pressure_bar,
+            symbolResId = R.string.unit_pressure_bar_symbol,
+            factor = BigDecimal("100000"),
+            key = "Bar"
+        )
+
+        data object Millibar : Unit(
+            nameResId = R.string.unit_pressure_millibar,
+            symbolResId = R.string.unit_pressure_millibar_symbol,
+            factor = BigDecimal("100"),
+            key = "Millibar"
+        )
+
+        data object Atmosphere : Unit(
+            nameResId = R.string.unit_pressure_atmosphere,
+            symbolResId = R.string.unit_pressure_atmosphere_symbol,
+            factor = BigDecimal("101325"),
+            key = "Atmosphere"
+        )
+
+        data object Psi : Unit(
+            nameResId = R.string.unit_pressure_psi,
+            symbolResId = R.string.unit_pressure_psi_symbol,
+            factor = BigDecimal("6894.757293168"),
+            key = "Psi"
+        )
+
+        data object Torr : Unit(
+            nameResId = R.string.unit_pressure_torr,
+            symbolResId = R.string.unit_pressure_torr_symbol,
+            factor = BigDecimal("133.32236842105"),
+            key = "Torr"
+        )
+
+        data object MillimeterOfMercury : Unit(
+            nameResId = R.string.unit_pressure_mmhg,
+            symbolResId = R.string.unit_pressure_mmhg_symbol,
+            factor = BigDecimal("133.322387415"),
+            key = "MillimeterOfMercury"
+        )
+
+        data object InchOfMercury : Unit(
+            nameResId = R.string.unit_pressure_inhg,
+            symbolResId = R.string.unit_pressure_inhg_symbol,
+            factor = BigDecimal("3386.389"),
+            key = "InchOfMercury"
+        )
+    }
+
+    override val units: List<Unit> = listOf(
+        Unit.Pascal,
+        Unit.Kilopascal,
+        Unit.Megapascal,
+        Unit.Bar,
+        Unit.Millibar,
+        Unit.Atmosphere,
+        Unit.Psi,
+        Unit.Torr,
+        Unit.MillimeterOfMercury,
+        Unit.InchOfMercury
+    )
+    override val defaultTopUnit: Unit = Unit.Bar
+    override val defaultBottomUnit: Unit = Unit.Psi
+}
diff --git a/app/src/main/kotlin/org/fossify/math/helpers/converters/SpeedConverter.kt b/app/src/main/kotlin/org/fossify/math/helpers/converters/SpeedConverter.kt
new file mode 100644
index 00000000..0b24d428
--- /dev/null
+++ b/app/src/main/kotlin/org/fossify/math/helpers/converters/SpeedConverter.kt
@@ -0,0 +1,95 @@
+package org.fossify.math.helpers.converters
+
+import org.fossify.commons.helpers.HOUR_SECONDS
+import org.fossify.math.R
+import org.fossify.math.helpers.MATH_CONTEXT
+import java.math.BigDecimal
+
+/**
+ * Base unit: meter per second.
+ *
+ * Main references:
+ * - https://en.wikipedia.org/wiki/Metre_per_second
+ * - https://en.wikipedia.org/wiki/Kilometres_per_hour
+ * - https://en.wikipedia.org/wiki/Miles_per_hour
+ * - https://en.wikipedia.org/wiki/Knot_(unit)
+ * - https://en.wikipedia.org/wiki/Mach_number
+ * - https://en.wikipedia.org/wiki/Speed_of_light
+ */
+object SpeedConverter : Converter {
+    override val nameResId: Int = R.string.unit_speed
+    override val imageResId: Int = R.drawable.ic_speed_vector
+    override val key: String = "SpeedConverter"
+
+    sealed class Unit(nameResId: Int, symbolResId: Int, factor: BigDecimal, key: String) :
+        Converter.Unit(nameResId, symbolResId, factor, key) {
+        data object MeterPerSecond : Unit(
+            nameResId = R.string.unit_speed_meter_per_second,
+            symbolResId = R.string.unit_speed_meter_per_second_symbol,
+            factor = BigDecimal.ONE,
+            key = "MeterPerSecond"
+        )
+
+        data object KilometerPerSecond : Unit(
+            nameResId = R.string.unit_speed_kilometer_per_second,
+            symbolResId = R.string.unit_speed_kilometer_per_second_symbol,
+            factor = BigDecimal("1000"),
+            key = "KilometerPerSecond"
+        )
+
+        data object KilometerPerHour : Unit(
+            nameResId = R.string.unit_speed_kilometer_per_hour,
+            symbolResId = R.string.unit_speed_kilometer_per_hour_symbol,
+            factor = BigDecimal("1000").divide(BigDecimal("3600"), MATH_CONTEXT),
+            key = "KilometerPerHour"
+        )
+
+        data object MilePerHour : Unit(
+            nameResId = R.string.unit_speed_mile_per_hour,
+            symbolResId = R.string.unit_speed_mile_per_hour_symbol,
+            factor = BigDecimal("0.44704"),
+            key = "MilePerHour"
+        )
+
+        data object Knot : Unit(
+            nameResId = R.string.unit_speed_knot,
+            symbolResId = R.string.unit_speed_knot_symbol,
+            factor = BigDecimal("1852").divide(BigDecimal("3600"), MATH_CONTEXT),
+            key = "Knot"
+        )
+
+        data object FootPerSecond : Unit(
+            nameResId = R.string.unit_speed_foot_per_second,
+            symbolResId = R.string.unit_speed_foot_per_second_symbol,
+            factor = BigDecimal("0.3048"),
+            key = "FootPerSecond"
+        )
+
+        data object Mach : Unit(
+            nameResId = R.string.unit_speed_mach,
+            symbolResId = R.string.unit_speed_mach_symbol,
+            factor = BigDecimal("340.27"), // ISA: dry air, 15 °C, sea level
+            key = "Mach"
+        )
+
+        data object SpeedOfLight : Unit(
+            nameResId = R.string.unit_speed_speed_of_light,
+            symbolResId = R.string.unit_speed_speed_of_light_symbol,
+            factor = BigDecimal("299792458"),
+            key = "SpeedOfLight"
+        )
+    }
+
+    override val units: List<Unit> = listOf(
+        Unit.MeterPerSecond,
+        Unit.KilometerPerSecond,
+        Unit.KilometerPerHour,
+        Unit.MilePerHour,
+        Unit.Knot,
+        Unit.FootPerSecond,
+        Unit.Mach,
+        Unit.SpeedOfLight
+    )
+    override val defaultTopUnit: Unit = Unit.KilometerPerHour
+    override val defaultBottomUnit: Unit = Unit.MilePerHour
+}
diff --git a/app/src/main/res/drawable/ic_energy_vector.xml b/app/src/main/res/drawable/ic_energy_vector.xml
new file mode 100644
index 00000000..2ce9e79c
--- /dev/null
+++ b/app/src/main/res/drawable/ic_energy_vector.xml
@@ -0,0 +1,3 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="24dp" android:height="24dp" android:viewportWidth="960" android:viewportHeight="960">
+    <path android:pathData="M422 728l207-248H469l29-227-185 267h139l-30 208zm-62-128H236q-24 0-35.5-21.5T203 537l299-430q10-14 26-19.5t33 0.5q17 6 25 21t6 32l-32 259h155q26 0 36.5 23t-6.5 43L416 860q-11 13-27 17t-31-3q-15-7-23.5-21.5T328 821l32-221zm111-110z" android:fillColor="#FFFFFF"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_pressure_vector.xml b/app/src/main/res/drawable/ic_pressure_vector.xml
new file mode 100644
index 00000000..da3e1d2a
--- /dev/null
+++ b/app/src/main/res/drawable/ic_pressure_vector.xml
@@ -0,0 +1,3 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="24dp" android:height="24dp" android:viewportWidth="960" android:viewportHeight="960">
+    <path android:pathData="M732 308q-5-5-8.5-12.5T720 280q0-11 6-19.5t15-15.5q14-11 31-17t34-11q4-1 8-1t7 3q4 4 2 15-5 17-11 34t-17 31q-7 9-15.5 15t-19.5 6q-8 0-15.5-3.5T732 308zM160 840q-33 0-56.5-23.5T80 760V200q0-33 23.5-56.5T160 120h240q33 0 56.5 23.5T480 200v327q9-3 19-5t21-2q50 0 85 35t35 85v80q0 17 11.5 28.5T680 760q17 0 28.5-11.5T720 720V520h-40v-57q-54-23-87-72t-33-111q0-83 58.5-141.5T760 80q83 0 141.5 58.5T960 280q0 62-33 111t-87 72v57h-40v200q0 50-35 85t-85 35q-50 0-85-35t-35-85v-80q0-17-11.5-28.5T520 600q-17 0-28.5 11.5T480 640v120q0 33-23.5 56.5T400 840H160zm600-440q50 0 85-35t35-85q0-50-35-85t-85-35q-50 0-85 35t-35 85q0 50 35 85t85 35zM160 760h240v-80l-32 32q-14 14-29.5 12.5T312 712q-11-11-12.5-27t12.5-30l88-88v-87l-32 32q-14 14-29.5 12.5T312 512q-11-11-12.5-27t12.5-30l88-88v-87l-32 32q-14 14-29.5 12.5T312 312q-11-11-12.5-27t12.5-30l55-55H193l55 55q14 14 12.5 29.5T248 311q-11 11-26.5 13T192 312l-32-32v87l88 88q14 14 12.5 29.5T248 511q-11 11-26.5 13T192 512l-32-32v87l88 88q14 14 12.5 29.5T248 711q-11 11-26.5 13T192 712l-32-32v80zm120-280z" android:fillColor="#FFFFFF"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_speed_vector.xml b/app/src/main/res/drawable/ic_speed_vector.xml
new file mode 100644
index 00000000..ed090ba3
--- /dev/null
+++ b/app/src/main/res/drawable/ic_speed_vector.xml
@@ -0,0 +1,3 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="24dp" android:height="24dp" android:viewportWidth="960" android:viewportHeight="960">
+    <path android:pathData="M418 620q24 24 62 23.5t56-27.5l169-253q9-14-2.5-25.5T677 335L424 504q-27 18-28.5 55t22.5 61zm62-460q36 0 71 6t68 19q16 6 34 22.5t10 31.5q-8 15-36 20t-45-1q-25-9-50.5-13.5T480 240q-133 0-226.5 93.5T160 560q0 42 11.5 83t32.5 77h552q23-38 33.5-79t10.5-85q0-26-4.5-51T782 456q-6-17-2-33t18-27q13-10 28.5-6t21.5 18q15 35 23 71.5t9 74.5q1 57-13 109t-41 99q-11 18-30 28t-40 10H204q-21 0-40-10t-30-28q-26-45-40-95.5T80 560q0-83 31.5-155.5t86-127Q252 223 325 191.5T480 160zm7 313z" android:fillColor="#FFFFFF"/>
+</vector>
diff --git a/app/src/main/res/values/donottranslate.xml b/app/src/main/res/values/donottranslate.xml
index 40324cac..6d7df6b7 100644
--- a/app/src/main/res/values/donottranslate.xml
+++ b/app/src/main/res/values/donottranslate.xml
@@ -20,6 +20,7 @@
     <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>
@@ -30,6 +31,7 @@
     <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>
@@ -55,6 +57,7 @@
     <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>
@@ -69,10 +72,12 @@
     <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>
@@ -80,4 +85,39 @@
     <string name="unit_time_day_symbol">d</string>
     <string name="unit_time_week_symbol">wk</string>
     <string name="unit_time_year_symbol">y</string>
+
+    <string name="unit_speed_meter_per_second_symbol">m/s</string>
+    <string name="unit_speed_kilometer_per_second_symbol">km/s</string>
+    <string name="unit_speed_kilometer_per_hour_symbol">km/h</string>
+    <string name="unit_speed_mile_per_hour_symbol">mph</string>
+    <string name="unit_speed_knot_symbol">kn</string>
+    <string name="unit_speed_foot_per_second_symbol">ft/s</string>
+    <string name="unit_speed_mach_symbol">Ma</string>
+    <string name="unit_speed_speed_of_light_symbol">c</string>
+
+    <string name="unit_pressure_pascal_symbol">Pa</string>
+    <string name="unit_pressure_kilopascal_symbol">kPa</string>
+    <string name="unit_pressure_megapascal_symbol">MPa</string>
+    <string name="unit_pressure_bar_symbol">bar</string>
+    <string name="unit_pressure_millibar_symbol">mbar</string>
+    <string name="unit_pressure_atmosphere_symbol">atm</string>
+    <string name="unit_pressure_psi_symbol">psi</string>
+    <string name="unit_pressure_torr_symbol">Torr</string>
+    <string name="unit_pressure_mmhg_symbol">mmHg</string>
+    <string name="unit_pressure_inhg_symbol">inHg</string>
+
+    <string name="unit_energy_joule_symbol">J</string>
+    <string name="unit_energy_kilojoule_symbol">kJ</string>
+    <string name="unit_energy_megajoule_symbol">MJ</string>
+    <string name="unit_energy_gigajoule_symbol">GJ</string>
+    <string name="unit_energy_calorie_symbol">cal</string>
+    <string name="unit_energy_kilocalorie_symbol">kcal</string>
+    <string name="unit_energy_watt_hour_symbol">Wh</string>
+    <string name="unit_energy_kilowatt_hour_symbol">kWh</string>
+    <string name="unit_energy_megawatt_hour_symbol">MWh</string>
+    <string name="unit_energy_electronvolt_symbol">eV</string>
+    <string name="unit_energy_btu_symbol">BTU</string>
+    <string name="unit_energy_therm_symbol">thm</string>
+    <string name="unit_energy_foot_pound_symbol">ft⋅lbf</string>
+    <string name="unit_energy_erg_symbol">erg</string>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 5c6b0a46..779a7111 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -35,6 +35,7 @@
     <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>
@@ -46,6 +47,7 @@
     <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>
@@ -72,6 +74,7 @@
     <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>
@@ -87,11 +90,13 @@
     <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>
@@ -101,6 +106,44 @@
     <string name="unit_time_week">Week</string>
     <string name="unit_time_year">Year</string>
 
+    <string name="unit_speed">Speed</string>
+    <string name="unit_speed_meter_per_second">Meter per second</string>
+    <string name="unit_speed_kilometer_per_second">Kilometer per second</string>
+    <string name="unit_speed_kilometer_per_hour">Kilometer per hour</string>
+    <string name="unit_speed_mile_per_hour">Mile per hour</string>
+    <string name="unit_speed_knot">Knot</string>
+    <string name="unit_speed_foot_per_second">Foot per second</string>
+    <string name="unit_speed_mach">Mach</string>
+    <string name="unit_speed_speed_of_light">Speed of light</string>
+
+    <string name="unit_pressure">Pressure</string>
+    <string name="unit_pressure_pascal">Pascal</string>
+    <string name="unit_pressure_kilopascal">Kilopascal</string>
+    <string name="unit_pressure_megapascal">Megapascal</string>
+    <string name="unit_pressure_bar">Bar</string>
+    <string name="unit_pressure_millibar">Millibar</string>
+    <string name="unit_pressure_atmosphere">Atmosphere</string>
+    <string name="unit_pressure_psi">Pound per square inch</string>
+    <string name="unit_pressure_torr">Torr</string>
+    <string name="unit_pressure_mmhg">Millimeter of mercury</string>
+    <string name="unit_pressure_inhg">Inch of mercury</string>
+
+    <string name="unit_energy">Energy</string>
+    <string name="unit_energy_joule">Joule</string>
+    <string name="unit_energy_kilojoule">Kilojoule</string>
+    <string name="unit_energy_megajoule">Megajoule</string>
+    <string name="unit_energy_gigajoule">Gigajoule</string>
+    <string name="unit_energy_calorie">Calorie</string>
+    <string name="unit_energy_kilocalorie">Kilocalorie</string>
+    <string name="unit_energy_watt_hour">Watt hour</string>
+    <string name="unit_energy_kilowatt_hour">Kilowatt hour</string>
+    <string name="unit_energy_megawatt_hour">Megawatt hour</string>
+    <string name="unit_energy_electronvolt">Electronvolt</string>
+    <string name="unit_energy_btu">British thermal unit</string>
+    <string name="unit_energy_therm">Therm</string>
+    <string name="unit_energy_foot_pound">Foot-pound</string>
+    <string name="unit_energy_erg">Erg</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>