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Kilocalories to kilojoules

1 kcal = 4.184 kJ

⇄
kilojoules (kJ)4.184

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Formula

Multiply the value in kcal by 4.184 to get kJ.

kJ = kcal × 4.184

Conversion table

kilocalories (kcal)kilojoules (kJ)
0.10.4184
0.52.092
14.184
28.368
312.552
416.736
520.92
625.104
729.288
833.472
937.656
1041.84
1562.76
2083.68
25104.6
30125.52
40167.36
50209.2
75313.8
100418.4
2501,046
5002,092
1,0004,184

Frequently asked questions

How many kJ are in 1 kcal?

1 kcal = 4.184 kJ.

How do I convert kcal to kJ?

Multiply the value in kcal by 4.184 to get kJ. kJ = kcal × 4.184

What is 10 kcal in kJ?

10 kcal = 41.84 kJ.

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Updated November 9, 2026