Watt-hours to Kilowatt-hours Converter
Convert watt-hour to kilowatt-hour instantly. Type a value below — the result updates as you type.
When you need to convert watt-hour to kilowatt-hour
Energy conversions appear on nutrition labels, utility bills and appliance specs, letting you compare food energy, electricity use and heating output on a common scale.
Typical values: 0.5 Wh is about 0.0005 kWh, and 100 Wh works out to roughly 0.1 kWh. Because the ratio is fixed at 0.001, you can scale any amount linearly — doubling the watt-hours doubles the kilowatt-hours.
Food packaging, power meters and heating equipment each prefer different energy units, so converting makes them directly comparable.
How to convert watt-hour to kilowatt-hour
One watt-hour equals 0.001 kilowatt-hours. To convert, multiply the number of watt-hours by 0.001:
kilowatt-hours = watt-hours × 0.001
For example, 10 watt-hours × 0.001 = 0.01 kilowatt-hours.
Watt-hours to kilowatt-hours conversion table
| Energy (Wh) | Kilowatt-hours (kWh) |
|---|---|
| 1 Wh | 0.001 kWh |
| 2 Wh | 0.002 kWh |
| 3 Wh | 0.003 kWh |
| 5 Wh | 0.005 kWh |
| 10 Wh | 0.01 kWh |
| 20 Wh | 0.02 kWh |
| 50 Wh | 0.05 kWh |
| 100 Wh | 0.1 kWh |
FAQ
How many kilowatt-hours are in a watt-hour?
One watt-hour = 0.001 kilowatt-hours.
How do I convert kilowatt-hours back to watt-hours?
Divide by 0.001, or use the kilowatt-hours to watt-hours converter.