Energy Conversions

To convert energy from one unit to another, enter a value in the input field and choose your converter below.

Units of Energy

UnitSymbolRelative to SI unit
Joules (SI unit)J1
KilojouleskJ1,000
Grams caloriecalIT4.1868
Kilocalorieskcal4,186.8
Watts hourW·h3,600
Kilowatts hourkW·h,B.O.T.U.3,600,000
ElectronvoltseV1.602177 × 10-19
British thermal unitBTUIT1,055.055853
US thermUS therm105,480,400
Foot-pound forceft lbf1.355818
Inch-pound forcein lbf0.112985

Convert from Joules

Convert from Kilojoules

Convert from Grams calorie

Convert from Kilocalories

Convert from Watts hour

Convert from Kilowatts hour

Convert from Electronvolts

Convert from British thermal unit

Convert from US therm

Convert from Foot-pound force

Convert from Inch-pound force