Kilocalories to Joules

1 kcal = 4,184 J

How to convert kilocalories to joules

J = kcal × 4,184

Example: 5 kcal = 20,920 J

Kilocalories to Joules conversion table

Kilocalories (kcal)Joules (J)
1 kcal4,184 J
2 kcal8,368 J
3 kcal12,552 J
4 kcal16,736 J
5 kcal20,920 J
6 kcal25,104 J
7 kcal29,288 J
8 kcal33,472 J
9 kcal37,656 J
10 kcal41,840 J
15 kcal62,760 J
20 kcal83,680 J
25 kcal104,600 J
30 kcal125,520 J
40 kcal167,360 J
50 kcal209,200 J
75 kcal313,800 J
100 kcal418,400 J
250 kcal1,046,000 J
500 kcal2,092,000 J
1,000 kcal4,184,000 J

About the units

Kilocalories: The kilocalorie, written "Calorie" on food labels, is the energy needed to heat 1 kg of water by 1 °C. This converter uses the thermochemical value of 4,184 joules.

Joules: The joule is the SI unit of energy, equal to the work done by a force of one newton over one meter.

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Frequently asked questions

How many joules are in 1 kilocalorie?

1 kilocalorie equals 4,184 joules.

How many kilocalories are in 1 joule?

1 joule equals 0.0002390057 kilocalories.

How do I convert kilocalories to joules?

Use the formula J = kcal × 4,184.

What is 10 kilocalories in joules?

10 kilocalories equals 41,840 joules.

Related conversions

Sources

Conversion factors use the exact definitions published by NIST and the BIPM, and are checked by automated tests against those definitions.

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