Watt-hour to kWh
Convert Watt-hour to kWh instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
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Formula
kWh = Wh × 0.001
Wh = kWh × 1000
Conversion table
| 1 Wh | 0.001 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 |
| 1000 Wh | 1 kWh |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the Watt-hour (Wh). A watt-hour is 3,600 joules.
What is the destination unit in this conversion?
The destination unit is the kWh (kWh). A kilowatt-hour is 3.6 million joules.
How do I convert Watt-hour to kWh?
Multiply the Watt-hour value by 0.001. For example, 10 Wh × 0.001 = 0.01 kWh.
Is the Watt-hour to kWh conversion exact?
Yes. Both units belong to the same engineering measurement family (energy), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in Watt-hour needs to be compared with, or reported in, kWh, such as in engineering, scientific, or industrial calculations.
Can I convert kWh back to Watt-hour?
Yes. Multiply the kWh value by 1000 to get Watt-hour.
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About this conversion
This page converts Watt-hour (Wh) to kWh (kWh) within the engineering converter.
A watt-hour is 3,600 joules. A kilowatt-hour is 3.6 million joules.
The formula is kWh = Wh × 0.001, based on each unit's fixed relationship to the energy base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common Watt-hour values already converted to kWh.