⚡ Energy & Calories

Convert calories to kilojoules (Energy)

1 cal = 0.004184 kJ. Convert calories to kilojoules instantly with the converter below.

Value

Result —

How to convert

Multiply the value (cal) by 0.004184 to get kJ — example: 5 cal = 0.02092 kJ

Conversion table

Calories to kilojoules conversion table
Calorie	Kilojoule
1 cal	0.004184 kJ
2 cal	0.008368 kJ
5 cal	0.02092 kJ
10 cal	0.04184 kJ
50 cal	0.2092 kJ
100 cal	0.4184 kJ
250 cal	1.046 kJ
500 cal	2.092 kJ
1,000 cal	4.184 kJ
2,000 cal	8.368 kJ

About the units

Calorie — symbol cal.
Kilojoule — symbol kJ.

The small calorie is the thermochemical calorie = 4.184 J; food calories are the large calorie (kilocalorie).

Frequently asked questions

How many kilojoules are in 1 calorie?

1 cal = 0.004184 kJ.

How do I convert calories to kilojoules?

Multiply the value (cal) by 0.004184 to get kJ.

How many calories are in 1 kilojoule?

1 kJ = 239.005736 cal.

Which definition does this conversion use?

The small calorie is the thermochemical calorie = 4.184 J; food calories are the large calorie (kilocalorie).

Related conversions

Reverse: kilojoules to calories

Calories to other units

calories to joules calories to kilocalories calories to watt-hours calories to kilowatt-hours calories to BTU

Other units to kilojoules

joules to kilojoules kilocalories to kilojoules watt-hours to kilojoules kilowatt-hours to kilojoules BTU to kilojoules

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