Watt Hour to Joule (Wh to J)
Convert Wh to J — Energy converter
One watt hour equals 3600 J, so to convert watt-hours to joules you multiply the value by 3600. A watt hour is larger than a joule — going the other way, 1 J = 0.0002777778 Wh. For example, 10 Wh = 36000 J and 50 Wh = 180000 J.
3600Click to copy
1 Wh = 3600 J
Watt Hour to Joule formula
1 Watt Hour = 3600 J
Worked examples
- 25 Wh = 90000 J
- 100 Wh = 360000 J
Watt Hour to Joule conversion table
| Watt Hour (Wh) | Joule (J) |
|---|---|
| 1 | 3600 |
| 2 | 7200 |
| 3 | 10800 |
| 5 | 18000 |
| 8 | 28800 |
| 10 | 36000 |
| 12 | 43200 |
| 15 | 54000 |
| 20 | 72000 |
| 25 | 90000 |
| 50 | 180000 |
| 100 | 360000 |
| 250 | 900000 |
| 500 | 1800000 |
| 1000 | 3600000 |
Frequently asked questions
How many joules are in one watt hour?
One watt hour equals 3600 joules (J).
How many watt-hours are in one joule?
One joule equals 0.0002777778 watt-hours (Wh).
How do you convert watt-hours to joules?
1 Watt Hour = 3600 J. Use the calculator above for any value.
What is 5 Wh in J?
5 Wh = 18000 J.
What is 100 Wh in J?
100 Wh = 360000 J.
What is 10 Wh in J?
10 Wh = 36000 J.
What is 20 Wh in J?
20 Wh = 72000 J.
Is a watt hour bigger than a joule?
Yes. A watt hour is larger — one watt hour equals 3600 joules (J).