How to use the converter
To use our energy converter, simply select the energy unit you want to convert from and to and enter a figure into the 'value' box. The calculator will then return the conversion value for you.
Use this energy converter to convert instantly between calories, joules, kilocalories, kilowatt-hours and other metric and imperial energy units.
Disclaimer: Whilst every effort has been made in building our calculator tools, we are not to be held liable for any damages or monetary losses arising out of or in connection with their use. Full disclaimer.
Common units of energy
- Joule (J): The standard unit of energy in the International System of Units (SI).
- Calorie (cal): A unit of energy often used in nutrition.
- Kilowatt-Hour (kWh): Commonly used to measure electricity consumption.
- Electronvolt (eV): Often used in particle physics and quantum mechanics.
Conversion units for the Energy Converter
British Thermal Units (Btu), Calories (kcal), Calories (th) (cal (th)), Electron Volt (eV), Ergs, Foot Pounds (ft·lb), Gigajoules (GJ), Joules (J), Kilocalories (th) (kcal), Kilojoules (kJ), Kilowatt-Hour (kWh), Megajoules (MJ), Millijoules (mJ).