Energy (Wh and kWh) Calculator
Watts times hours gives energy.
Energy = power × time. Everything is worked out in your browser. Nothing is saved or sent anywhere.
1. The load
2. Battery
3. Results
How it was worked out
What this does and doesn't tell you
- Inverters and converters lose some energy, so the battery gives up a bit more than this.
- 240V AC mains can kill. In Australia, work on household mains wiring must be carried out by a licensed electrician. Low-voltage DC systems can still deliver very high current.