Convert Wh to kWh
Enter the number of watt-hours that you want to convert to kilowatt-hours.
How to Convert Watt-hours to Kilowatt-hours
The watt-hour and kilowatt-hour are both units of energy. By definition, 1 kilowatt-hour equals exactly 1000 watt-hours. This means to convert watt-hours to kilowatt-hours, you divide by 1000.
Formula
Step-by-Step Example
Convert 5 Wh to kilowatt-hours:
We need to convert watt-hours to kilowatt-hours
Since 1 kWh = 1000 Wh, divide by 1000
5 ÷ 1000 = 0.005
5 Wh = 0.005 kWh
Watt-hour to Kilowatt-hour Conversion Table
Quick reference table for common watt-hour to kilowatt-hour conversions. Click any value for detailed calculation.
| Watt-hours (Wh) | Kilowatt-hours (kWh) |
|---|---|
| 0.1 Wh | 0.0001 kWh |
| 0.5 Wh | 0.0005 kWh |
| 1 Wh | 0.001 kWh |
| 2 Wh | 0.002 kWh |
| 5 Wh | 0.005 kWh |
| 10 Wh | 0.01 kWh |
| 25 Wh | 0.025 kWh |
| 50 Wh | 0.05 kWh |
| 100 Wh | 0.1 kWh |
About These Units
Watt-hour (Wh)
A watt-hour (Wh) is the energy of one watt sustained for one hour, equal to 3,600 joules. Watt-hours measure battery capacity (smartphone: 10-15 Wh, laptop: 50-100 Wh) and small appliance energy use. One Wh equals 3.6 kilojoules.
Kilowatt-hour (kWh)
A kilowatt-hour (kWh) is the standard unit for electricity billing, equal to 1,000 watt-hours or 3.6 megajoules. Average US home uses 900 kWh monthly. Running a 100W bulb for 10 hours uses 1 kWh. Electricity costs $0.10-0.30 per kWh typically.
Frequently Asked Questions
How do I convert watt-hours to kilowatt-hours?
To convert watt-hours to kilowatt-hours, divide the value by 1000. For example, 10 Wh = 0.01 kWh.
How many kilowatt-hours are in 1 watt-hour?
1 watt-hour equals 0.001 kilowatt-hours.
What is the formula for watt-hours to kilowatt-hours?
The formula is: kWh = Wh ÷ 1000.