Unit Converter

Energy Converters

90 free energy conversions. Pick a pair, or use the converter on each page. All calculations run in your browser.

Joules (j) Kilojoules (kj) Calories (cal) Kilocalories (kcal) Watt Hours (wh) Kilowatt Hours (kwh) BTU (btu) Electronvolts (ev) Megawatt Hours (mwh) Therms (therm)

All energy conversions

j → kj j → cal j → kcal j → wh j → kwh j → btu j → ev j → mwh j → therm kj → j kj → cal kj → kcal kj → wh kj → kwh kj → btu kj → ev kj → mwh kj → therm cal → j cal → kj cal → kcal cal → wh cal → kwh cal → btu cal → ev cal → mwh cal → therm kcal → j kcal → kj kcal → cal kcal → wh kcal → kwh kcal → btu kcal → ev kcal → mwh kcal → therm wh → j wh → kj wh → cal wh → kcal wh → kwh wh → btu wh → ev wh → mwh wh → therm kwh → j kwh → kj kwh → cal kwh → kcal kwh → wh kwh → btu kwh → ev kwh → mwh kwh → therm btu → j btu → kj btu → cal btu → kcal btu → wh btu → kwh btu → ev btu → mwh btu → therm ev → j ev → kj ev → cal ev → kcal ev → wh ev → kwh ev → btu ev → mwh ev → therm mwh → j mwh → kj mwh → cal mwh → kcal mwh → wh mwh → kwh mwh → btu mwh → ev mwh → therm therm → j therm → kj therm → cal therm → kcal therm → wh therm → kwh therm → btu therm → ev therm → mwh