Energy Converter

Convert energy between joules, calories, kilocalories, kilowatt-hours, BTU and electronvolts with scientific precision.

All units

Joule (J)1
Kilojoule (kJ)0.001
Calorie (cal)0.2390057361
Kilocalorie (kcal)0.0002390057361
Watt-hour (Wh)0.0002777777778
Kilowatt-hour (kWh)2.777778e-7
Megawatt-hour2.777778e-10
BTU0.0009478171227
Electronvolt (eV)6.241509e+18
Foot-pound0.7375621484
Erg10000000