Convert Kilojoule to Kilocalorie
Convert Kilojoule to Kilocalorie instantly. 1 kJ = 0.239006 kcal. Formula, worked examples and a quick reference table.
Last updated
One kilojoule equals 0.239006 kilocalorie. To convert any number of kilojoules to kilocalories, multiply by 0.23900574.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Kilojoule to Kilocalorie formula
To go the other way, use kilojoule = kilocalorie ÷ 0.23900574.
About these units
The "calorie" on food labels is actually a kilocalorie — 1,000 small calories. One kilocalorie is 4.184 kilojoules.
Kilojoule to Kilocalorie conversion table
| Kilojoule | Kilocalorie |
|---|---|
| 1 kJ | 0.239 kcal |
| 2 kJ | 0.478 kcal |
| 3 kJ | 0.717 kcal |
| 5 kJ | 1.195 kcal |
| 10 kJ | 2.3901 kcal |
| 20 kJ | 4.7801 kcal |
| 25 kJ | 5.9751 kcal |
| 50 kJ | 11.9503 kcal |
| 100 kJ | 23.9006 kcal |
| 250 kJ | 59.7514 kcal |
| 500 kJ | 119.5029 kcal |
| 1,000 kJ | 239.0057 kcal |
Frequently asked questions
How many kilocalories are in a kilojoule? +
There are 0.239006 kilocalories in one kilojoule.
What is 10 kJ in kcal? +
10 kJ equals 2.3901 kcal. Multiply 10 by 0.23900574.
How do I convert kilocalorie back to kilojoule? +
Use kilojoule = kilocalorie ÷ 0.23900574. The converter above handles both directions, or see our dedicated Kilocalorie to Kilojoule page.