kilojoules to kilocalories
Convert kilojoule to kilocalorie (food cal) — instant, free, with the formula shown.
How to convert kilojoule to kilocalorie (food cal)
To convert kilojoule to kilocalorie (food cal), multiply by 0.23900574:
For example, 10 kJ × 0.239006 = 2.390057 kcal.
kJ to kcal conversion table
| kilojoules (kJ) | kilocalories (kcal) |
|---|---|
| 1 kJ | 0.239006 kcal |
| 2 kJ | 0.478011 kcal |
| 5 kJ | 1.195029 kcal |
| 10 kJ | 2.390057 kcal |
| 25 kJ | 5.975143 kcal |
| 50 kJ | 11.950287 kcal |
| 100 kJ | 23.900574 kcal |
| 250 kJ | 59.751434 kcal |
| 500 kJ | 119.502868 kcal |
| 1000 kJ | 239.005736 kcal |
Other kilojoule conversions
Convert to kilocalorie (food cal) from another unit
kJ to kcal — frequently asked
How many kilocalories are in 1 kilojoule?
1 kilojoule = 0.239006 kilocalories (kJ × 0.239006 = kcal).
What is the formula to convert kilojoule to kilocalorie (food cal)?
Multiply your kilojoule value by 0.23900574 to get kilocalorie (food cal).
How do I convert 10 kilojoules to kilocalories?
10 kJ = 2.390057 kcal. For 100 kJ the answer is 23.900574 kcal. Use the calculator on this page for any other value.
When to convert kilojoule to kilocalorie (food cal)
Energy conversion — common questions
Is a food calorie the same as a calorie?
No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.
How many joules in 1 kWh?
1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.
What is a BTU?
British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.