Convert Kilowatt-hour to Watt-hour
1 kilowatt-hour = 1,000 watt-hour (Wh). For example, 10 kilowatt-hour = 10,000 watt-hour and 100 kilowatt-hour = 100,000 watt-hour. Type any value below to convert kilowatt-hour to watt-hour both ways — it runs entirely in your browser.
Kilowatt-hour to Watt-hour conversion formula
To convert kilowatt-hour to watt-hour, multiply by 1,000:
watt-hour = kilowatt-hour × 1,000
Going the other way, 1 watt-hour = 0.001 kilowatt-hour, so
kilowatt-hour = watt-hour × 0.001.
Kilowatt-hour to Watt-hour — worked examples
| Kilowatt-hour | Watt-hour |
|---|---|
| 1 kWh | 1,000 Wh |
| 2 kWh | 2,000 Wh |
| 3 kWh | 3,000 Wh |
| 5 kWh | 5,000 Wh |
| 10 kWh | 10,000 Wh |
| 25 kWh | 25,000 Wh |
| 50 kWh | 50,000 Wh |
| 100 kWh | 100,000 Wh |
Kilowatt-hour ↔ Watt-hour reference table
| Kilowatt-hour → Watt-hour | Watt-hour → Kilowatt-hour |
|---|---|
| 1 kWh = 1,000 Wh | 1 Wh = 0.001 kWh |
| 2 kWh = 2,000 Wh | 2 Wh = 0.002 kWh |
| 5 kWh = 5,000 Wh | 5 Wh = 0.005 kWh |
| 10 kWh = 10,000 Wh | 10 Wh = 0.01 kWh |
| 20 kWh = 20,000 Wh | 20 Wh = 0.02 kWh |
| 50 kWh = 50,000 Wh | 50 Wh = 0.05 kWh |
| 100 kWh = 100,000 Wh | 100 Wh = 0.1 kWh |
| 250 kWh = 250,000 Wh | 250 Wh = 0.25 kWh |
| 500 kWh = 500,000 Wh | 500 Wh = 0.5 kWh |
| 1000 kWh = 1,000,000 Wh | 1000 Wh = 1 kWh |
About kilowatt-hour and watt-hour
Kilowatt-hour: A kilowatt-hour is 1,000 watt-hours — exactly 3,600,000 joules (3.6 MJ). It is the "unit" your electricity meter bills.
Watt-hour: A watt-hour is the energy of one watt sustained for one hour — exactly 3,600 joules. Commonly used to rate battery capacity.
Frequently asked questions
- How many watt-hour are in 1 kilowatt-hour?
- 1 kilowatt-hour = 1,000 watt-hour (Wh).
- How do I convert kilowatt-hour to watt-hour?
- Multiply the number of kilowatt-hour by 1,000. For example, 10 kilowatt-hour = 10 × 1,000 = 10,000 watt-hour.
- How many kilowatt-hour are in 1 watt-hour?
- 1 watt-hour = 0.001 kilowatt-hour.
- Which is bigger, kilowatt-hour or watt-hour?
- 1 kilowatt-hour equals 1,000 watt-hour, so a kilowatt-hour is the larger unit.