Energy Converter

Convert energy instantly between joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, BTU and other common energy units.

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Conversion Result

Converted Energy 0

Joules 0 J

Kilojoules 0 kJ

Megajoules 0 MJ

Calories 0 cal

Kilocalories 0 kcal

Watt-hours 0 Wh

Kilowatt-hours 0 kWh

Electronvolts 0 eV

BTU 0 BTU

Foot-pounds 0 ft-lb

Therms 0 therm

1 kJ = 1,000 J

1 MJ = 1,000 kJ

1 calorie = 4.184 J

1 kilocalorie = 4,184 J

1 Wh = 3,600 J

1 kWh = 3,600,000 J

1 BTU ~ 1,055.06 J

1 ft-lb ~ 1.35582 J

Food calorie note: The "Calorie" shown on food labels is normally a kilocalorie (kcal). Therefore, 1 food Calorie = 1 kcal = 4,184 joules.