ENERGY CONVERSION
Watt-hour to Kilowatt-hour.
Convert watt-hour (Wh) to kilowatt-hour (kWh), with the math explained.
THE MATH, MADE SIMPLE
How to convert watt-hour to kilowatt-hour
Multiply your watt-hour value by 0.001 to get the equivalent in kilowatt-hour. Both units are normalized through the joule.
kWh = Wh × 0.00110 Wh = 0.01 kWh
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.QUICK REFERENCE
Wh to kWh conversion table
| Watt-hour (Wh) | Kilowatt-hour (kWh) |
|---|---|
| 1 Wh | 0.001 kWh |
| 2 Wh | 0.002 kWh |
| 5 Wh | 0.005 kWh |
| 10 Wh | 0.01 kWh |
| 20 Wh | 0.02 kWh |
| 50 Wh | 0.05 kWh |
| 100 Wh | 0.1 kWh |
| 500 Wh | 0.5 kWh |
| 1,000 Wh | 1 kWh |
About the watt-hour
The watt-hour (Wh) is a unit of energy. One watt-hour equals 3,600 joule (base unit) in this calculator.
All watt-hour conversionsAbout the kilowatt-hour
The kilowatt-hour (kWh) is a unit of energy. One kilowatt-hour equals 3,600,000 joule (base unit) in this calculator.
All kilowatt-hour conversionsCommon questions
What is 1 Wh in kWh?
One watt-hour equals 0.001 kWh. Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
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