Wh to joules converter
1 watt-hour equals 3,600 joules. Conversions use J = Wh × 3600
Wh → 3,600 J
J = Wh × 3600
Converter
Worked examples
- 1 Wh = 3,600 J
- 2 Wh = 7,200 J
- 5 Wh = 18,000 J
- 10 Wh = 36,000 J
- 100 Wh = 360,000 J
watt-hours to joules conversion table
| Wh | J | Arithmetic |
|---|---|---|
| 1 Wh | 3,600 J | × 3600 |
| 2 Wh | 7,200 J | × 3600 |
| 3 Wh | 10,800 J | × 3600 |
| 4 Wh | 14,400 J | × 3600 |
| 5 Wh | 18,000 J | × 3600 |
| 6 Wh | 21,600 J | × 3600 |
| 8 Wh | 28,800 J | × 3600 |
| 10 Wh | 36,000 J | × 3600 |
| 12 Wh | 43,200 J | × 3600 |
| 15 Wh | 54,000 J | × 3600 |
| 20 Wh | 72,000 J | × 3600 |
| 25 Wh | 90,000 J | × 3600 |
| 30 Wh | 108,000 J | × 3600 |
| 40 Wh | 144,000 J | × 3600 |
| 50 Wh | 180,000 J | × 3600 |
| 60 Wh | 216,000 J | × 3600 |
| 70 Wh | 252,000 J | × 3600 |
| 80 Wh | 288,000 J | × 3600 |
| 90 Wh | 324,000 J | × 3600 |
| 100 Wh | 360,000 J | × 3600 |
How to convert Wh to J
- Take your value in watt-hours.
- Multiply by 3600
- That is your answer in joules — no rounding needed until you choose a display precision.
Related conversions
J to WhJ to kJJ to calJ to kcalJ to kWhJ to BtukJ to Jcal to Jkcal to Jall energy units
Questions
How many joules in 1 watt-hour?
Exactly 3,600 J. The factor follows from the definitions of both units, not from a measurement, so it is exact.
How do I convert Wh to J?
Multiply the watt-hours figure by 3600 — or use the converter above, which updates as you type.
Is Wh to J the same as J to Wh?
No — they are inverses. One Wh is 3,600 J, while one J is 0.0002777778 Wh.
What is 1 Wh in J?
1 Wh = 3,600 J (see the value page for the full arithmetic).