Kilowatt-hours (kW·h) to Watt-hours (W·h) Conversion
Kilowatt-hours
The kilowatt-hour (kW·h) is a unit of energy equal to exactly 3,600,000 joules (3.6 MJ), defined as the energy consumed by a one-kilowatt device operating for one hour. It is the standard unit on electricity bills worldwide. A typical European household consumes approximately 3,500 kWh per year. One kWh powers a 100-watt bulb for 10 hours, charges an electric vehicle by approximately 5–8 km of driving range, or powers the average laptop for about 10 hours.
Watt-hours
The watt-hour (W·h) is a unit of energy equal to exactly 3,600 joules, defined as the energy consumed by a one-watt device operating for one hour. It is used in electrical engineering and consumer electronics for expressing battery capacities: a smartphone battery typically holds 10–20 Wh. In aviation, aircraft battery capacities are specified in watt-hours for international transport regulations (lithium batteries above 100 Wh face restrictions).
| Kilowatt-hours (kW·h) | Watt-hours (W·h) |
|---|---|
| 0.1 kW·h | 100.00 W·h |
| 1 kW·h | 1,000.00 W·h |
| 2 kW·h | 2,000.00 W·h |
| 3 kW·h | 3,000.00 W·h |
| 5 kW·h | 5,000.00 W·h |
| 10 kW·h | 10,000.00 W·h |
| 20 kW·h | 20,000.00 W·h |
| 30 kW·h | 30,000.00 W·h |
| 50 kW·h | 50,000.00 W·h |
| 100 kW·h | 100,000.00 W·h |
| 1000 kW·h | 1,000,000.00 W·h |
Frequently Asked Questions (FAQ)
How many watt-hours are in 1 kilowatt-hours?
1 kilowatt-hours (kW·h) is exactly 1,000.00 watt-hours (W·h).
How do I convert kilowatt-hours to watt-hours?
Multiply the value in kilowatt-hours by 1,000.00 to get the result in watt-hours. Or use the converter above — type any number and see the result instantly.