Watt-hours to Joules
Convert Wh to J. 1 watt-hour = 3,600 J, and 1 joule = 0.000277777778 Wh.
Formula Multiply the value in watt-hours by 3,600. Watt-hours to Joules table
1 watt-hour in every unit
| Joules | 3,600 | J |
|---|---|---|
| Kilojoules | 3.6 | kJ |
| Megajoules | 0.0036 | MJ |
| Calories | 860.420650096 | cal |
| Kilocalories | 0.860420650096 | kcal |
| Kilowatt-hours | 0.001 | kWh |
| British thermal units | 3.41214163313 | BTU |
| Foot-pounds | 2,655.2237374 | ft·lbf |
| Electronvolts | 2.246943e+22 | eV |
Food labels write kilocalories (kcal) as "Calories". Calories here are thermochemical: 1 cal = 4.184 J.
How to convert watt-hours to joules
Multiply the value in watt-hours by 3,600.
For example, 10 Wh = 36,000 J, and 10 J = 0.002777777778 Wh.
Frequently asked questions
How many joules are in one watt-hour?
1 watt-hour = 3,600 J.
What is 10 Wh in J?
10 Wh = 36,000 J.
How do I convert J back to Wh?
Divide the value in joules by 3,600. 1 joule = 0.000277777778 Wh.
Watt-hours to Joules table
| Watt-hours (Wh) | Joules (J) |
|---|---|
| 0.1 | 360 |
| 0.5 | 1,800 |
| 1 | 3,600 |
| 2 | 7,200 |
| 3 | 10,800 |
| 4 | 14,400 |
| 5 | 18,000 |
| 6 | 21,600 |
| 7 | 25,200 |
| 8 | 28,800 |
| 9 | 32,400 |
| 10 | 36,000 |
| 15 | 54,000 |
| 20 | 72,000 |
| 25 | 90,000 |
| 30 | 108,000 |
| 50 | 180,000 |
| 75 | 270,000 |
| 100 | 360,000 |
| 250 | 900,000 |
| 500 | 1,800,000 |
| 1,000 | 3,600,000 |
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