Skip to content

Convert kilojoule to kilocalorie

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

- scroll: formula · table · questions -

  • 1 kJ = 0.239006 kcal
  • 1 kcal = 4.184 kJ

Kilojoule to kilocalorie conversion table

kilojoule kilocalorie
1 0.239006
2 0.478011
5 1.195029
10 2.390057
20 4.780115
50 11.950287
100 23.900574

Formula to convert kilojoule to kilocalorie

To convert kilojoule to kilocalorie, multiply by 0.239006.

1 kJ = 0.239006 kcal
Example: 1 kilojoule = 0.239006 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.
  • The relationship is exact: 1 kWh = 3.6 MJ (3,600 kJ, because an hour has 3,600 seconds). The common slip is dividing when you should multiply: 10 kWh is 36 MJ, not 2.8. Remember the direction: kWh → MJ means times 3.6.

Quick kilojoule to/from kilocalorie conversion quiz

Score: 0

38 kilojoule equals 9.99 kilocalorie.

Correct answer: 38 kilojoule = 9.08 kilocalorie.

24.7 kilojoule equals 6.79 kilocalorie.

Correct answer: 24.7 kilojoule = 5.9 kilocalorie.

15.8 kilojoule equals 3.78 kilocalorie.

Correct answer: 15.8 kilojoule = 3.78 kilocalorie.

More conversions in energy