Kilojoule to Watt Hour (kJ to Wh)
Convert kJ to Wh — Energy converter
One kilojoule equals 0.27777778 Wh, so to convert kilojoules to watt-hours you multiply the value by 0.27777778. A kilojoule is smaller than a watt hour — going the other way, 1 Wh = 3.6 kJ. For example, 10 kJ = 2.777778 Wh and 50 kJ = 13.888889 Wh.
0.27777778Click to copy
1 kJ = 0.27777778 Wh
Kilojoule to Watt Hour formula
1 Kilojoule = 0.27777778 Wh
Worked examples
- 25 kJ = 6.944444 Wh
- 100 kJ = 27.777778 Wh
Kilojoule to Watt Hour conversion table
| Kilojoule (kJ) | Watt Hour (Wh) |
|---|---|
| 1 | 0.27777778 |
| 2 | 0.55555556 |
| 3 | 0.83333333 |
| 5 | 1.388889 |
| 8 | 2.222222 |
| 10 | 2.777778 |
| 12 | 3.333333 |
| 15 | 4.166667 |
| 20 | 5.555556 |
| 25 | 6.944444 |
| 50 | 13.888889 |
| 100 | 27.777778 |
| 250 | 69.444444 |
| 500 | 138.888889 |
| 1000 | 277.777778 |
Frequently asked questions
How many watt-hours are in one kilojoule?
One kilojoule equals 0.27777778 watt-hours (Wh).
How many kilojoules are in one watt hour?
One watt hour equals 3.6 kilojoules (kJ).
How do you convert kilojoules to watt-hours?
1 Kilojoule = 0.27777778 Wh. Use the calculator above for any value.
What is 5 kJ in Wh?
5 kJ = 1.388889 Wh.
What is 100 kJ in Wh?
100 kJ = 27.777778 Wh.
What is 10 kJ in Wh?
10 kJ = 2.777778 Wh.
What is 20 kJ in Wh?
20 kJ = 5.555556 Wh.
Is a kilojoule bigger than a watt hour?
No. A kilojoule is smaller — one kilojoule equals 0.27777778 watt-hours, while one watt hour equals 3.6 kilojoules.