Joule to Watt Hour (J to Wh)
Convert J to Wh — Energy converter
One joule equals 0.0002777778 Wh, so to convert joules to watt-hours you multiply the value by 0.0002777778. A joule is smaller than a watt hour — going the other way, 1 Wh = 3600 J. For example, 10 J = 0.0027777778 Wh and 50 J = 0.01388889 Wh.
0.0002777778Click to copy
1 J = 0.0002777778 Wh
Joule to Watt Hour formula
1 Joule = 0.0002777778 Wh
Worked examples
- 25 J = 0.0069444444 Wh
- 100 J = 0.02777778 Wh
Joule to Watt Hour conversion table
| Joule (J) | Watt Hour (Wh) |
|---|---|
| 1 | 0.0002777778 |
| 2 | 0.0005555556 |
| 3 | 0.0008333333 |
| 5 | 0.0013888889 |
| 8 | 0.0022222222 |
| 10 | 0.0027777778 |
| 12 | 0.0033333333 |
| 15 | 0.0041666667 |
| 20 | 0.0055555556 |
| 25 | 0.0069444444 |
| 50 | 0.01388889 |
| 100 | 0.02777778 |
| 250 | 0.06944444 |
| 500 | 0.13888889 |
| 1000 | 0.27777778 |
Frequently asked questions
How many watt-hours are in one joule?
One joule equals 0.0002777778 watt-hours (Wh).
How many joules are in one watt hour?
One watt hour equals 3600 joules (J).
How do you convert joules to watt-hours?
1 Joule = 0.0002777778 Wh. Use the calculator above for any value.
What is 5 J in Wh?
5 J = 0.0013888889 Wh.
What is 100 J in Wh?
100 J = 0.02777778 Wh.
What is 10 J in Wh?
10 J = 0.0027777778 Wh.
What is 20 J in Wh?
20 J = 0.0055555556 Wh.
Is a joule bigger than a watt hour?
No. A joule is smaller — one joule equals 0.0002777778 watt-hours, while one watt hour equals 3600 joules.