Convert kilojoules to kilowatt-hours 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.
kWh = kJ × 0.00027778
Example: 1 kJ × 0.00027778 = 0.00027778 kWh
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 kWh?
Multiply the value in Kilojoules by 0.00027778. For example: 10 kJ = 0.00277778 kWh.
When should I use Kilowatt-hours 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) | Kilowatt-hours (kWh) |
|---|---|
| 1 kJ | 0.00027778 kWh |
| 10 kJ | 0.00277778 kWh |
| 50 kJ | 0.013889 kWh |
| 100 kJ | 0.027778 kWh |
| 250 kJ | 0.069444 kWh |
| 500 kJ | 0.138889 kWh |
| 1000 kJ | 0.277778 kWh |
| 2000 kJ | 0.555556 kWh |