1 kJ equals 0.239006 kcal. To convert kJ to kcal, multiply the value by 0.239006; divide by 0.239006 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert kJ to kcal?
The conversion formula is kcal = kJ × 0.239006. The conversion factor is fixed by definition, so the result is always exact.
kJ to kcal conversion table
| kJ | kcal |
|---|---|
| 1 kJ | 0.239006 kcal |
| 2 kJ | 0.478011 kcal |
| 5 kJ | 1.19503 kcal |
| 10 kJ | 2.39006 kcal |
| 100 kJ | 23.9006 kcal |
| 1,000 kJ | 239.006 kcal |
What is kJ (kJ)?
The kilojoule (kJ) equals 1,000 joules. It is the SI energy unit on European food labels, usually shown next to kilocalories.
What is kcal (kcal)?
The kilocalorie (kcal), also written Calorie, equals 1,000 calories or 4.184 kJ. It is the food-energy unit used in nutrition worldwide.
Why convert kJ to kcal?
Energy units come from different fields: joules and kilojoules in physics, kilocalories on food labels, kilowatt-hours on electricity bills, BTU in heating and air-conditioning. Converting between them is common for nutrition, utility bills and HVAC.
One kilocalorie (the food Calorie) equals exactly 4.184 kJ — which is why nutrition labels show both. One kilowatt-hour is 3.6 MJ, equal to about 3,412 BTU or 860 kcal (BIPM/ISO).
How to convert kJ to kcal
- Enter the value in kJ into the left field of the converter.
- Read the result in kcal instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (kcal to kJ).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.