How to convert kilojoules to kilocalories
- Type the value in kilojoules (kJ) in the box above.
- The result in kilocalories appears instantly, along with the same value in every other unit of energy.
- Press ⇄ to convert the other way.
Formula
kcal = kJ ÷ 4.184. So 1 kJ = 0.239006 kcal, and 1,000 kJ = 239.006 kcal.
Kilojoules to kilocalories is the conversion behind food labels: Australia, New Zealand and much of Europe list energy in kJ, while the "Calories" on US labels are kilocalories. Divide kJ by 4.184. An adult reference intake of 8,700 kJ is about 2,080 kcal. To estimate, divide by 4.
kJ to kcal conversion chart
| Kilojoules | Kilocalories |
|---|---|
| 100 kJ | 23.9006 kcal |
| 250 kJ | 59.7514 kcal |
| 500 kJ | 119.503 kcal |
| 1,000 kJ | 239.006 kcal |
| 1,500 kJ | 358.509 kcal |
| 2,000 kJ | 478.011 kcal |
| 2,500 kJ | 597.514 kcal |
| 5,000 kJ | 1,195.03 kcal |
| 8,000 kJ | 1,912.05 kcal |
| 8,700 kJ | 2,079.35 kcal |
| 10,000 kJ | 2,390.06 kcal |
| 12,000 kJ | 2,868.07 kcal |
FAQ
How many calories is 1000 kJ?
1000 kJ is 239 kcal (food Calories).
How do I convert kJ to kcal?
Use kcal = kJ ÷ 4.184. Or type the value above and the converter does it for you.
How do I convert kcal back to kJ?
Multiply by 4.184, or press the ⇄ button in the converter.