Kilojoule to Watt-hour (kJ → Wh)
Convert kilojoule to watt-hour instantly. The conversion factor below is exact by international definition.
Realtime·energy·SI
Exact
kJ
× 0.2778
Wh
0.277778
Precision [auto]
6
📐kJ to Wh formulaExact
Wh = kJ × 0.277777777778
Inverse: kJ = Wh × 3.6
Worked example: 1 kJ = 0.277777777778 Wh
ℹ️About these units
Kilojoule (kJ)
Food energy labels in many countries.
Watt-hour (Wh)
📊Reference table: kJ → Wh
| Kilojoule (kJ) | Watt-hour (Wh) |
|---|---|
| 1 | 0.277778 |
| 2 | 0.555556 |
| 5 | 1.3889 |
| 10 | 2.7778 |
| 15 | 4.1667 |
| 20 | 5.5556 |
| 25 | 6.9444 |
| 50 | 13.8889 |
| 100 | 27.7778 |
| 250 | 69.4444 |
| 500 | 138.8889 |
| 750 | 208.3333 |
| 1,000 | 277.7778 |
Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.
🔁Reverse & related
🔌API & widget
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