Toolyard

Energy Converter

Energy units for food, electricity and physics. The "calorie" on a nutrition label is a kilocalorie — 1,000 of the calories used in physics.

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0.001

1 joule = 0.001 kilojoules · open this conversion

Units covered

UnitSymbolIn joules
JoulesJ1
KilojouleskJ1,000
Caloriescal4.184
Kilocalorieskcal4,184
Watt hoursWh3,600
Kilowatt hourskWh3,600,000

A food Calorie (capital C) is a kilocalorie. The thermochemical calorie of 4.184 J is used here.

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All energy conversions

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