Convert kWh to Wh
Convert kilowatt-hours to watt-hours by entering a value below.
How to Convert Kilowatt-hours to Watt-hours
The kilowatt-hour and watt-hour are both units of energy. By definition, 1 kilowatt-hour equals exactly 1000 watt-hours. This means to convert kilowatt-hours to watt-hours, you multiply by 1000.
Formula
Step-by-Step Example
Convert 5 kWh to watt-hours:
We need to convert kilowatt-hours to watt-hours
Since 1 kWh = 1000 Wh, multiply by 1000
5 × 1000 = 5000
5 kWh = 5000 Wh
Kilowatt-hour to Watt-hour Conversion Table
Quick reference table for common kilowatt-hour to watt-hour conversions. Click any value for detailed calculation.
| Kilowatt-hours (kWh) | Watt-hours (Wh) |
|---|---|
| 0.1 kWh | 100 Wh |
| 0.5 kWh | 500 Wh |
| 1 kWh | 1000 Wh |
| 2 kWh | 2000 Wh |
| 5 kWh | 5000 Wh |
| 10 kWh | 10000 Wh |
| 25 kWh | 25000 Wh |
| 50 kWh | 50000 Wh |
| 100 kWh | 100000 Wh |
About These Units
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.
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.
Frequently Asked Questions
How do I convert kilowatt-hours to watt-hours?
To convert kilowatt-hours to watt-hours, multiply the value by 1000. For example, 10 kWh = 10000 Wh.
How many watt-hours are in 1 kilowatt-hour?
1 kilowatt-hour equals 1000 watt-hours.
What is the formula for kilowatt-hours to watt-hours?
The formula is: Wh = kWh × 1000.