Watt-hour to Kilowatt
Compare Watt-hour and Kilowatt. See why these engineering units measure different physical quantities, plus links to valid conversions.
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Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
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Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Watt-hour and Kilowatt measure different quantities, so no single result applies.
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Formula
Watt-hour (Wh) measures energy, while Kilowatt (kW) measures power. These are different physical quantities, so there is no single multiplication factor that converts one into the other.
Wh relates to its own energy base unit by a factor of 3600. kW relates to its own power base unit by a factor of 1000.
Conversion table
| Watt-hour (Wh) | 3600 × energy base unit |
| Kilowatt (kW) | 1000 × power base unit |
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Frequently asked questions
Can Watt-hour be converted to Kilowatt?
Not directly. Watt-hour measures energy and Kilowatt measures power. Converting between different physical quantities needs an extra physical relationship (such as area, distance, or time), not just a unit ratio.
What is Watt-hour used for?
The Watt-hour (Wh) is a unit of energy. A watt-hour is 3,600 joules.
What is Kilowatt used for?
The Kilowatt (kW) is a unit of power. Kilowatt is 1000 watt units.
Why does the converter show an incompatible units message?
The Universal Converter only calculates a numeric result when both units share the same physical dimension. Since Watt-hour and Kilowatt don't, the tool flags them as not directly compatible rather than returning a meaningless number.
What should I convert Watt-hour to instead?
Use another energy unit, such as one of the related Watt-hour conversions linked below.
What should I convert Kilowatt to instead?
Use another power unit, such as one of the related Kilowatt conversions linked below.
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About this conversion
This page compares Watt-hour (Wh) and Kilowatt (kW) within the engineering converter.
A watt-hour is 3,600 joules. Kilowatt is 1000 watt units.
Because Watt-hour measures energy and Kilowatt measures power, the two units are not directly convertible: there is no fixed ratio that turns one into the other without additional information.
The calculator above will report that these units are not compatible. For a working result, choose two units from the same measurement family — see the related conversions below.