Convert watt hours to kilowatt hours
1 Wh = 0.001 kWh. Change the amount below, or read the formula and the reference table further down.
1 watt hour equals
kilowatt hours
1 Wh = 0.001 kWh
The formula
Watt hours and kilowatt hours both measure energy from the same zero, so a single multiplier does the job.
kWh = Wh × 0.001
Going the other way? Convert kilowatt hours to watt hours.
Watt hours to kilowatt hours table
Common values, rounded for reading.
| Watt hours (Wh) | Kilowatt hours (kWh) |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 30 | 0.03 |
| 40 | 0.04 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1,000 | 1 |
Questions people ask
- How many kilowatt hours are in a watt hour?
- One watt hour equals 0.001 kilowatt hours.
- How do I convert watt hours to kilowatt hours by hand?
- Multiply the number of watt hours by 0.001. For a rough check, 0.001 is close enough for most everyday use.
- What is 1 watt hour in kilowatt hours?
- 1 watt hour is 0.001 kilowatt hours.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.