Convert Kilojoules to Kilowatt-hours
Kilojoules to Kilowatt-hours conversion table
| Kilojoules (kJ) | Kilowatt-hours (kWh) |
|---|---|
| 1 kJ | 0.000278 kWh |
| 2 kJ | 0.000556 kWh |
| 5 kJ | 0.001389 kWh |
| 10 kJ | 0.002778 kWh |
| 25 kJ | 0.006944 kWh |
| 50 kJ | 0.013889 kWh |
| 100 kJ | 0.027778 kWh |
| 200 kJ | 0.055556 kWh |
| 500 kJ | 0.138889 kWh |
| 1000 kJ | 0.277778 kWh |
How to convert kilojoules to kilowatt-hours
The kJ-to-kWh conversion appears often when working with energy data across different unit systems. Energy conversions connect food nutrition labels (calories), electricity bills (kWh), and scientific measurements in joules or BTU.
To convert, multiply the kilojoules value by 0.000277778. Written as an equation: kWh = kJ × 0.000277778.
One kilojoules equals approximately 0.000278 kWh. This means you can multiply any kJ value by 0.000278 to get the equivalent in kWh.
Worked example: 25 kJ = 0.006944 kWh. Enter your own value in the converter above for instant results.
Common mistake: Food calories on nutrition labels are actually kilocalories (kcal), which confuses many people when comparing to joules or watt-hours.
Bookmark this page for quick kJ to kWh conversions, or use the swap button to reverse the direction and convert kWh back to kJ.
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Frequently asked questions
1 kJ equals 0.000278 kWh.
Multiply the kilojoules value by 0.000277778.
10 kJ = 0.002778 kWh.