Convert Kilocalories to Kilojoules

Q: How many kilojoules are in a kilocalorie?

One kilocalorie equals 4.184 kilojoules.

1 kilocalorie = 4.184 kilojoules. Type any value below to convert in either direction — the calculation happens in your browser.

kilocalories

kilojoules

Kilocalories to Kilojoules formula

Multiply the number of kilocalories by 4.184 to get kilojoules.

kilojoules = kilocalories × 4.184

To go the other way: divide the number of kilojoules by 4.184, or multiply by 0.2390057.

kilocalories = kilojoules ÷ 4.184

Kilocalories to Kilojoules conversion table

Kilocalories	Kilojoules
1 kcal	4.184 kJ
2 kcal	8.368 kJ
3 kcal	12.552 kJ
4 kcal	16.736 kJ
5 kcal	20.92 kJ
6 kcal	25.104 kJ
7 kcal	29.288 kJ
8 kcal	33.472 kJ
9 kcal	37.656 kJ
10 kcal	41.84 kJ
15 kcal	62.76 kJ
20 kcal	83.68 kJ
25 kcal	104.6 kJ
30 kcal	125.52 kJ
40 kcal	167.36 kJ
50 kcal	209.2 kJ
75 kcal	313.8 kJ
100 kcal	418.4 kJ
250 kcal	1,046 kJ
500 kcal	2,092 kJ
1,000 kcal	4,184 kJ

Kilojoules to Kilocalories conversion table

Kilojoules	Kilocalories
1 kJ	0.2390057 kcal
2 kJ	0.4780115 kcal
3 kJ	0.7170172 kcal
4 kJ	0.9560229 kcal
5 kJ	1.195029 kcal
6 kJ	1.434034 kcal
7 kJ	1.67304 kcal
8 kJ	1.912046 kcal
9 kJ	2.151052 kcal
10 kJ	2.390057 kcal

About the kilocalorie

A kilocalorie is 1,000 calories and is the "Calorie" printed on nutrition labels.

About the kilojoule

A kilojoule is 1,000 joules and is how food energy is labelled in most of the world.

Frequently asked questions

How many kilojoules are in a kilocalorie?

There are 4.184 kilojoules in one kilocalorie.

How many kilocalories are in a kilojoule?

There are 0.2390057 kilocalories in one kilojoule.

Is this conversion exact?

The ratio between the kilocalorie and the kilojoule is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.

What is 10 kilocalories in kilojoules?

10 kilocalories equals 41.84 kilojoules.

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