Energy Converter

Convert between different energy units quickly and accurately.

Popular Energy Conversions
Select a conversion to get started
Kilocalorie to Kilojoule
kcal to kJ
Joule to Calorie
J to cal
British Thermal Unit to Kilojoule
BTU to kJ
Kilocalorie to Kilowatt Hour
kcal to kWh
Joule to Foot-Pound
J to ft⋅lb
All Energy Conversions
Complete list of energy conversions

Joule (J) to:

Kilojoule (kJ) to:

Calorie (cal) to:

Kilocalorie (kcal) to:

Watt Hour (Wh) to:

Kilowatt Hour (kWh) to:

Electronvolt (eV) to:

British Thermal Unit (BTU) to:

Foot-Pound (ft⋅lb) to: