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Energy converter

Joules, calories, kJ, kWh, BTU and electronvolts.

Realtime·energy·metric
Exact
cal
× 4.184
J
4.184
Precision [auto]
6

Popular energy conversions

Calorie (small) → Joule
cal → J
Kilocalorie (food calorie) → Kilojoule
kcal → kJ
Kilojoule → Kilocalorie (food calorie)
kJ → kcal
Kilowatt-hour → Joule
kWh → J
British thermal unit (IT) → Kilojoule
BTU → kJ

All energy units

Joule (J)Kilojoule (kJ)Megajoule (MJ)Gigajoule (GJ)Calorie (small) (cal)Kilocalorie (food calorie) (kcal)Watt-hour (Wh)Kilowatt-hour (kWh)Megawatt-hour (MWh)British thermal unit (IT) (BTU)Therm (US) (thm)Foot-pound (ft·lb)Electronvolt (eV)Erg (erg)