Convert joules 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 = J × 0.239006
Example: 1 J × 0.239006 = 0.239006 cal
Use kcal for food; kWh for energy consumption; joules for science.
Common uses: nutrition, electricity bills, and scientific calculations.
How do I convert J to cal?
Multiply the value in Joules by 0.239006. For example: 10 J = 2.3901 cal.
When should I use Calories instead of Joules?
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.
| Joules (J) | Calories (cal) |
|---|---|
| 1 J | 0.239006 cal |
| 10 J | 2.3901 cal |
| 50 J | 11.9503 cal |
| 100 J | 23.9006 cal |
| 250 J | 59.7514 cal |
| 500 J | 119.5029 cal |
| 1000 J | 239.0057 cal |
| 2000 J | 478.0115 cal |