Kilojoules to kilocalories converter

1 kJ = 0.2390057 kcal. To convert kilojoules to kilocalories, divide by 4.184 (or multiply by ≈ 0.2390057). Example: 10 kJ = 2.390057 kcal.

Result (kcal)

kcal = kJ ÷ 4.184 · Swap: Kilocalories to kilojoules

Open the full tool: Unit converter →

Kilojoules to kilocalories chart

KilojoulesKilocalories
1 kJ0.239006 kcal
2 kJ0.478011 kcal
3 kJ0.717017 kcal
4 kJ0.956023 kcal
5 kJ1.19503 kcal
6 kJ1.43403 kcal
7 kJ1.67304 kcal
8 kJ1.91205 kcal
9 kJ2.15105 kcal
10 kJ2.39006 kcal
12 kJ2.86807 kcal
15 kJ3.58509 kcal
20 kJ4.78011 kcal
25 kJ5.97514 kcal
30 kJ7.17017 kcal
40 kJ9.56023 kcal
50 kJ11.9503 kcal
60 kJ14.3403 kcal
75 kJ17.9254 kcal
100 kJ23.9006 kcal
200 kJ47.8011 kcal
500 kJ119.503 kcal
1000 kJ239.006 kcal

How to convert kilojoules to kilocalories

Formula: kcal = kJ ÷ 4.184. Worked example: 10 kJ = 2.390057 kcal.

About these units

The food Calorie (kilocalorie) is exactly 4.184 kJ (thermochemical calorie). EU and many other labels show energy in both units: 2,000 kcal ≈ 8,368 kJ, the reference daily intake used on labels.

Category: energy. Results on this page are calculated in your browser and rounded to 7 significant digits; the table above uses 6. For other units of energy open the full unit converter, or use the reverse page — kilocalories to kilojoules.

FAQ

How many kilocalories are in one kJ?

1 kJ = 0.2390057361 kcal (rounded). Conversely, 1 kcal = 4.184 kJ.

What is 100 kJ in kilocalories?

100 kJ = 23.90057 kcal.

Is this converter accurate?

Yes — it uses the official definitions (1 kJ = 1 kJ, 1 kcal = 4.184 kJ) and shows results rounded to 7 significant digits.

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