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ZapUnits

Energy & Work converter

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

Diet calories, electricity bills in kilowatt-hours, boiler ratings in BTU and particle physics in electronvolts are all the same physical quantity. Convert energy across every scale from the atomic to the industrial.

Result
4.184

1 kcal = 4.184 kJ

Multiply the number of kilocalories by 4.184.

Results are rounded for display. Double-check values for critical work.

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JouleJ
KilojoulekJ
MegajouleMJ
GigajouleGJ
Calorie (small)cal
Kilocalorie (food Calorie)kcal
Watt-hourWh
Kilowatt-hourkWh
Megawatt-hourMWh
ElectronvolteV
British Thermal UnitBTU
Thermthm
Foot-poundft·lb
Ergerg
Horsepower-hourhp·h
Ton of TNTtTNT
Barrel of Oil Equivalentboe

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