Kilojoule to Kilocalorie Converter
Convert Kilojoule (kJ) to Kilocalorie (kcal). Results update as you type, with a conversion table and the formula below.
1 kJ =
0.239006 kcal
kJ to kcal conversion table
| kJ | kcal |
|---|---|
| 1 | 0.239006 |
| 2 | 0.478011 |
| 3 | 0.717017 |
| 4 | 0.956023 |
| 5 | 1.195 |
| 6 | 1.434 |
| 7 | 1.673 |
| 8 | 1.912 |
| 9 | 2.1511 |
| 10 | 2.3901 |
| 15 | 3.5851 |
| kJ | kcal |
|---|---|
| 20 | 4.7801 |
| 25 | 5.9751 |
| 30 | 7.1702 |
| 40 | 9.5602 |
| 50 | 11.9503 |
| 60 | 14.3403 |
| 70 | 16.7304 |
| 80 | 19.1205 |
| 90 | 21.5105 |
| 100 | 23.9006 |
How to use
- Type the kJ value to convert.
- The result appears instantly in kcal; the swap button reverses direction.
- For common values, check the conversion table below.
Frequently asked questions
How many kcal is 1 kJ?+
1 kJ = 0.239006 kcal. The table below lists the values you'll reach for most often.
How accurate are the results?+
The math uses internationally standardized definitions; only the display is rounded to significant digits. Accurate enough for school, work and daily life.
How do I convert kcal back to kJ?+
Hit the swap arrows in the middle of the converter above — the direction flips and your value is kept.
Is it really free?+
Yes. No sign-up, no install, no usage limits. The site is ad-supported.
Unit guide
The formula
1 kJ equals 0.239006 kcal — multiply a kJ value by 0.239006 to get kcal. Example: 5 kJ × 0.239006 = 1.195 kcal.
Going the other way, 1 kcal = 4.184 kJ — multiply by 4.184, or hit the swap button on the converter above.
When is this conversion needed?
Useful for nutrition labels (kcal vs kJ), diet calorie counting and electricity or battery figures.