Free instant Wh → J converter. No signup, no uploads — everything is calculated privately in your browser.
1 Wh = 3,600 joules
1 watt-hours = 3,600 joules
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1 watt-hour equals 3,600 joules. To convert watt-hours to joules, multiply the value by 3600.
1 watt-hour = 3,600 joules. Formula: value × 3600
Example: 1 Wh → 3,600 J. Type any value in the converter above to see it converted live.
| Watt-hours (Wh) | Joules (J) |
|---|---|
| 1 Wh | 3,600 J |
| 2 Wh | 7,200 J |
| 5 Wh | 18,000 J |
| 10 Wh | 36,000 J |
| 25 Wh | 90,000 J |
| 50 Wh | 180,000 J |
| 100 Wh | 360,000 J |
| 250 Wh | 900,000 J |
| 500 Wh | 1,800,000 J |
| 1,000 Wh | 3,600,000 J |
1 watt-hour = 3,600 joules. Formula: value × 3600. Enter the value above and the result appears instantly — the calculation runs entirely in your browser.
Exactly: 1 watt-hour = 3600 joules. The reverse factor is 1 joule = 0.0002777777777777778 watt-hours.
1 Wh = 3,600 J; 10 Wh = 36,000 J; 100 Wh = 360,000 J. Use the full conversion table below for more reference values.
No — and the capital letter matters. A food Calorie (with a capital C) is a kilocalorie: 1,000 small calories. This converter treats them correctly: 1 kcal = 4.184 kJ = 1,000 cal. Energy labels on food almost always mean kilocalories, even where the label just says "calories".