Convert kilojoules to calories quickly and accurately using this free online converter
Used in nutrition labels, physics, and electricity consumption.
💡 Calories (kcal) are used in food; joules in science; kWh in electricity.
cal = kJ × 239.0057
Example: 1 kJ × 239.0057 = 239.0057 cal
Use kcal for food; kWh for energy consumption; joules for science.
Common uses: nutrition, electricity bills, and scientific calculations.
How do I convert kJ to cal?
Multiply the value in Kilojoules by 239.0057. For example: 10 kJ = 2390.0574 cal.
When should I use Calories instead of Kilojoules?
Use kcal for food; kWh for energy consumption; joules for science.
Is this converter accurate?
Yes. We use internationally recognized conversion factors, updated to current standards.
| Kilojoules (kJ) | Calories (cal) |
|---|---|
| 1 kJ | 239.0057 cal |
| 10 kJ | 2390.0574 cal |
| 50 kJ | 11,950.29 cal |
| 100 kJ | 23,900.57 cal |
| 250 kJ | 59,751.43 cal |
| 500 kJ | 119,502.87 cal |
| 1000 kJ | 239,005.74 cal |
| 2000 kJ | 478,011.47 cal |