Calories to Kilojoules

One calorie is 0.004184 kilojoules. Energy units for food, electricity and physics. The "calorie" on a nutrition label is a kilocalorie — 1,000 of the calories used in physics.

ad 728x90

ad 320x50

From

To0.004184

1 calorie = 0.004184 kilojoules · open this conversion

Formula

kilojoules = calories × 0.004184

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

Calories to Kilojoules table

Calories	Kilojoules
1 cal	0.004184 kJ
2 cal	0.008368 kJ
5 cal	0.02092 kJ
10 cal	0.04184 kJ
20 cal	0.08368 kJ
25 cal	0.1046 kJ
50 cal	0.2092 kJ
100 cal	0.4184 kJ
150 cal	0.6276 kJ
200 cal	0.8368 kJ
250 cal	1.046 kJ
300 cal	1.2552 kJ
400 cal	1.6736 kJ
500 cal	2.092 kJ
600 cal	2.5104 kJ
800 cal	3.3472 kJ
1,000 cal	4.184 kJ
1,500 cal	6.276 kJ
2,000 cal	8.368 kJ
2,500 cal	10.46 kJ

native ad unit

Other energy conversions

⇄ Kilojoules to Calories Calories to Joules Calories to Kilocalories Calories to Watt hours Calories to Kilowatt hours

Frequently asked questions

▸How many kilojoules are in a calorie?

One calorie is 0.004184 kilojoules. kilojoules = calories × 0.004184.

▸How do I convert calories to kilojoules?

Multiply the number of calories by 0.004184. For example, 10 cal × 0.004184 = 0.04184 kJ.

▸What is the difference between calories and kilojoules?

Calorie (cal) and Kilojoule (kJ) both measure energy. Energy units for food, electricity and physics. The "calorie" on a nutrition label is a kilocalorie — 1,000 of the calories used in physics.

ad 300x250