Kilojoules to calories
1 kilojoule = 0.239 calories
For any other value: kcal = kJ × 0.2390057361
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239 kcal
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You can leave the unit in: 100 kJ is fine.
Kilojoules to calories chart
The values people look up most.
| kilojoules | calories |
|---|---|
| 1000 kJ | 239 kcal |
| 23.4 kJ | 5.59 kcal |
| 2000 kJ | 478 kcal |
| 400 kJ | 95.6 kcal |
| 1100 kJ | 262.9 kcal |
| 1500 kJ | 358.5 kcal |
| 600 kJ | 143.4 kcal |
| 300 kJ | 71.7 kcal |
| 500 kJ | 119.5 kcal |
| 800 kJ | 191.2 kcal |
| 1600 kJ | 382.4 kcal |
| 1 kJ | 0.239 kcal |
| 3000 kJ | 717 kcal |
| 2500 kJ | 597.5 kcal |
| 100 kJ | 23.9 kcal |
| 401 kJ | 95.8 kcal |
| 200 kJ | 47.8 kcal |
| 1800 kJ | 430.2 kcal |
| 1700 kJ | 406.3 kcal |
| 1400 kJ | 334.6 kcal |
| 5000 kJ | 1195 kcal |
| 2100 kJ | 501.9 kcal |
| 1200 kJ | 286.8 kcal |
| 4000 kJ | 956 kcal |
| 450 kJ | 107.6 kcal |
| 900 kJ | 215.1 kcal |
| 10000 kJ | 2390.1 kcal |
| 6000 kJ | 1434 kcal |
| 8700 kJ | 2079.3 kcal |
| 1017 kJ | 243.1 kcal |
Formula
kcal = kJ × 0.2390057361
Food labels say “calories” but mean kilocalories. One of those is 4.184 kJ.
Where this number comes from
This factor is exact, not rounded. The thermochemical calorie is exactly 4.184 J.
Source: NIST Guide to the SI, Appendix B: Conversion Factors, NIST (National Institute of Standards and Technology, USA).
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