Kilojoules to Kilocalories formula
kilocalories = kilojoules × 0.239006
Multiply the number of kilojoules by 0.239006 to get kilocalories. To go the other way, multiply by 4.184 instead, or use the kcal to kj converter.
Kilojoules to Kilocalories conversion table
Common kj to kcal values, rounded for reading. The converter above keeps full precision.
| Kilojoules | Kilocalories |
|---|---|
| 1 kJ | 0.239006 kcal |
| 2 kJ | 0.478011 kcal |
| 3 kJ | 0.717017 kcal |
| 4 kJ | 0.956023 kcal |
| 5 kJ | 1.19503 kcal |
| 10 kJ | 2.39006 kcal |
| 15 kJ | 3.58509 kcal |
| 20 kJ | 4.78011 kcal |
| 25 kJ | 5.97514 kcal |
| 50 kJ | 11.9503 kcal |
| 75 kJ | 17.9254 kcal |
| 100 kJ | 23.9006 kcal |
| 250 kJ | 59.7514 kcal |
| 500 kJ | 119.503 kcal |
| 1,000 kJ | 239.006 kcal |
Worked example
To convert 10 kJ to kilocalories, multiply by 0.239006: the result is 2.39006 kcal. A nutritional Calorie is a kilocalorie, equal to 4,184 joules. The smaller scientific calorie equals 4.184 joules.
Frequently asked questions
How many kilocalories are in a kilojoule?
One kilojoule equals 0.239006 kilocalories (1 kJ = 0.239006 kcal).
What is 10 kilojoules in kilocalories?
10 kJ converts to 2.39006 kcal. Enter any other value in the converter above to see it recalculated instantly.
How do I convert kilocalories back to kilojoules?
Reverse the calculation: one kilocalorie equals 4.184 kilojoules. You can also swap the units in the converter or open the kcal to kj page.
Related energy conversions
Need a different pair? Open the full energy converter to choose any two units.