10 joules to watt hours
10 J = 0.00277778 Wh. Change the amount below, or read the formula and the reference table further down.
10 joules equals
watt hours
1 J = 0.00027778 Wh
The formula
Joules and watt hours both measure energy from the same zero, so a single multiplier does the job.
Wh = J × 0.0002777778
Going the other way? Convert watt hours to joules.
Joules to watt hours table
Values either side of 10 J.
| Joules (J) | Watt hours (Wh) |
|---|---|
| 0 | 0 |
| 1 | 0.000278 |
| 2 | 0.000556 |
| 3 | 0.000833 |
| 4 | 0.001111 |
| 5 | 0.001389 |
| 6 | 0.001667 |
| 7 | 0.001944 |
| 8 | 0.002222 |
| 9 | 0.0025 |
| 10 | 0.002778 |
| 11 | 0.003056 |
| 12 | 0.003333 |
| 13 | 0.003611 |
| 14 | 0.003889 |
| 15 | 0.004167 |
| 16 | 0.004444 |
| 17 | 0.004722 |
| 18 | 0.005 |
| 19 | 0.005278 |
| 20 | 0.005556 |
Questions people ask
- How many watt hours are in a joule?
- One joule equals 0.0002777778 watt hours.
- How do I convert joules to watt hours by hand?
- Multiply the number of joules by 0.0002777778. For a rough check, 0 is close enough for most everyday use.
- What is 10 joules in watt hours?
- 10 joules is 0.00277778 watt hours.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.