Energy Converter

Convert between Joule (J), Kilojoule (kJ), Watt-hour (Wh) and other supported units.

Supported units and conversion example

Enter a value, choose its current unit and the unit you want, then select Convert.

For example, 1 Joule (J) converts to 0.001 Kilojoule (kJ).

Joule (J), Kilojoule (kJ), Watt-hour (Wh), Kilowatt-hour (kWh), Thermochemical calorie (cal), Kilocalorie (kcal), Electronvolt (eV).