Converters/Energy

Calories to Kilojoules Converter

Free online calories to kilojoules converter. Multiply calories by 0.004184 to get kilojoules. 1 kcal = 4.184 kJ.

How it works

Multiply calories by 0.004184 to get kilojoules. 1 kcal = 4.184 kJ.

Calories to Kilojoules Conversion Table

Calories (cal)Kilojoules (kJ)
0.5 cal0.00209 kJ
1 cal0.00418 kJ
2 cal0.00837 kJ
5 cal0.02092 kJ
10 cal0.04184 kJ
20 cal0.08368 kJ
50 cal0.2092 kJ
100 cal0.4184 kJ
250 cal1.046 kJ
500 cal2.092 kJ
1,000 cal4.184 kJ

How the Conversion Works

Multiply calories by 0.004184 to get kilojoules. 1 kcal = 4.184 kJ.

Going the other way: 1 kJ = 239.01 cal. Enter a value in either field above and the converter runs the math in both directions instantly.

Frequently Asked Questions