NiftyRecipe Online energy conversion
kcal/BTU 3.965667 BTU/kcal 0.252164 MJ/kcal 239.005736 kcal/cal 1000 MJ/kJ 1000 kJ/cal 239.005736
cal / kJ

Calorie to Kilojoule converter

1 cal = 0.004184 kJ

This is the Calorie to Kilojoule converter. 1 cal = 0.004184 kJ.

Enter a value and click Calculate - opens the page with the new result

Common values

kilojoule to calorie 2 calories in kilojoule 3 calories in kilojoule 4 calories in kilojoule 5 calories in kilojoule 6 calories in kilojoule 8 calories in kilojoule 10 calories in kilojoule 12 calories in kilojoule 15 calories in kilojoule 20 calories in kilojoule
Formula: calorie to kilojoule

kJ = cal × 0.004184 (1 CAL = 0.004184 KJ)

Reference values: calorie → kilojoule
cal kJ
1 cal 0.004184 kJ
100 cal 0.4184 kJ
200 cal 0.8368 kJ
500 cal 2.092 kJ
1000 cal 4.184 kJ
2000 cal 8.368 kJ
Common conversions
1 cal → 0.004184 kJ 2 cal → 0.008368 kJ 3 cal → 0.012552 kJ 4 cal → 0.016736 kJ 5 cal → 0.02092 kJ 6 cal → 0.025104 kJ 8 cal → 0.033472 kJ 10 cal → 0.04184 kJ 12 cal → 0.050208 kJ 15 cal → 0.06276 kJ 20 cal → 0.08368 kJ 25 cal → 0.1046 kJ
FAQ for cal → kJ
Why do labels show both kcal and kJ?

Many regions require both. Roughly 1 kcal = 4.184 kJ. Use the calculator for any amount.

Is a food “Calorie” the same as a kilocalorie?

Yes. On labels, Calorie almost always means kilocalorie (kcal).

Manual conversion?

kJ = cal × 0.004184 (1 CAL = 0.004184 KJ)

Reverse conversion?

1 kilojoule ≈ 239.005736 calorie. Swap units in the form or use the reverse link.

How much is 1 calorie on a food label in kilojoule?

0.004184 kilojoule. Factor 1 calorie = 0.004184 kilojoule.

How the Calorie to Kilojoule converter works

This hub describes the pair, not a single number.

NiftyRecipe shows the factor and selected amount pages.