Energy Converter

Convert between joules, calories, kilowatt-hours, BTU, and more

8 units · 56 conversion pairs

Available Units

JJouleskJKilojoulescalCalorieskcalKilocaloriesWhWatt-hourskWhKilowatt-hoursBTUBTUeVElectronvolts

All Conversions

Joules → KilojoulesJ → kJ Joules → CaloriesJ → cal Joules → KilocaloriesJ → kcal Joules → Watt-hoursJ → Wh Joules → Kilowatt-hoursJ → kWh Joules → BTUJ → BTU Joules → ElectronvoltsJ → eV Kilojoules → JouleskJ → J Kilojoules → CalorieskJ → cal Kilojoules → KilocalorieskJ → kcal Kilojoules → Watt-hourskJ → Wh Kilojoules → Kilowatt-hourskJ → kWh Kilojoules → BTUkJ → BTU Kilojoules → ElectronvoltskJ → eV Calories → Joulescal → J Calories → Kilojoulescal → kJ Calories → Kilocaloriescal → kcal Calories → Watt-hourscal → Wh Calories → Kilowatt-hourscal → kWh Calories → BTUcal → BTU Calories → Electronvoltscal → eV Kilocalories → Jouleskcal → J Kilocalories → Kilojouleskcal → kJ Kilocalories → Calorieskcal → cal Kilocalories → Watt-hourskcal → Wh Kilocalories → Kilowatt-hourskcal → kWh Kilocalories → BTUkcal → BTU Kilocalories → Electronvoltskcal → eV Watt-hours → JoulesWh → J Watt-hours → KilojoulesWh → kJ Watt-hours → CaloriesWh → cal Watt-hours → KilocaloriesWh → kcal Watt-hours → Kilowatt-hoursWh → kWh Watt-hours → BTUWh → BTU Watt-hours → ElectronvoltsWh → eV Kilowatt-hours → JouleskWh → J Kilowatt-hours → KilojouleskWh → kJ Kilowatt-hours → CalorieskWh → cal Kilowatt-hours → KilocalorieskWh → kcal Kilowatt-hours → Watt-hourskWh → Wh Kilowatt-hours → BTUkWh → BTU Kilowatt-hours → ElectronvoltskWh → eV BTU → JoulesBTU → J BTU → KilojoulesBTU → kJ BTU → CaloriesBTU → cal BTU → KilocaloriesBTU → kcal BTU → Watt-hoursBTU → Wh BTU → Kilowatt-hoursBTU → kWh BTU → ElectronvoltsBTU → eV Electronvolts → JouleseV → J Electronvolts → KilojouleseV → kJ Electronvolts → CalorieseV → cal Electronvolts → KilocalorieseV → kcal Electronvolts → Watt-hourseV → Wh Electronvolts → Kilowatt-hourseV → kWh Electronvolts → BTUeV → BTU

About Energy Conversions

Energy is one of the most commonly converted measurement types. Our converter supports 8 units with 56 unique pairs. Each page includes a formula, conversion table, real-world use cases, and worked examples.

Whether you are a student, professional, or traveler, our energy converter provides instant, accurate results with the context you need.