Convert watt-hours to joules quickly and accurately using this free online converter
Used in nutrition labels, physics, and electricity consumption.
💡 Calories (kcal) are used in food; joules in science; kWh in electricity.
J = Wh × 3600
Example: 1 Wh × 3600 = 3600 J
Use kcal for food; kWh for energy consumption; joules for science.
Common uses: nutrition, electricity bills, and scientific calculations.
How do I convert Wh to J?
Multiply the value in Watt-hours by 3600. For example: 10 Wh = 36,000.00 J.
When should I use Joules instead of Watt-hours?
Use kcal for food; kWh for energy consumption; joules for science.
Is this converter accurate?
Yes. We use internationally recognized conversion factors, updated to current standards.
| Watt-hours (Wh) | Joules (J) |
|---|---|
| 1 Wh | 3600 J |
| 10 Wh | 36,000.00 J |
| 50 Wh | 180,000.00 J |
| 100 Wh | 360,000.00 J |
| 250 Wh | 900,000.00 J |
| 500 Wh | 1,800,000.00 J |
| 1000 Wh | 3,600,000.00 J |
| 2000 Wh | 7,200,000.00 J |