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Convert joule to kilocalorie

Here you can quickly calculate how many kilocalorie fit in one joule.

- scroll: formula · table · questions -

  • 1 J = 0.000239 kcal
  • 1 kcal = 4184 J

Joule to kilocalorie conversion table

joule kilocalorie
1 0.000239
2 0.000478
5 0.001195
10 0.00239
20 0.00478
50 0.01195
100 0.023901

Formula to convert joule to kilocalorie

To convert joule to kilocalorie, divide by 4184.

1 J = 0.000239 kcal
Example: 1 joule = 0.000239 kilocalorie

Common mistakes

  • Food 'calories' are actually kilocalories: 1 kcal = 1,000 cal. A '500-calorie' meal therefore contains 500 kcal, half a million small calories. Labels write the same thing as 'kcal' or as 'Cal' with a capital C.

Quick joule to/from kilocalorie conversion quiz

Score: 0

1 joule equals 0.000239 kilocalorie.

Correct answer: 1 joule = 0.000239 kilocalorie.

100 joule equals 0.00478 kilocalorie.

Correct answer: 100 joule = 0.0239 kilocalorie.

50 joule equals 0.012 kilocalorie.

Correct answer: 50 joule = 0.012 kilocalorie.

25 joule equals 0.0598 kilocalorie.

Correct answer: 25 joule = 0.00598 kilocalorie.

5 joule equals 0.0012 kilocalorie.

Correct answer: 5 joule = 0.0012 kilocalorie.

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