kWh to Watt
Compare kWh and Watt. 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.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
kWh and Watt measure different quantities, so no single result applies.
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Formula
kWh (kWh) measures energy, while Watt (W) measures power. These are different physical quantities, so there is no single multiplication factor that converts one into the other.
kWh relates to its own energy base unit by a factor of 3600000. W relates to its own power base unit by a factor of 1.
Conversion table
| kWh (kWh) | 3600000 × energy base unit |
| Watt (W) | 1 × power base unit |
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Frequently asked questions
Can kWh be converted to Watt?
Not directly. kWh measures energy and Watt 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 kWh used for?
The kWh (kWh) is a unit of energy. A kilowatt-hour is 3.6 million joules.
What is Watt used for?
The Watt (W) is a unit of power. The watt is one joule per second.
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 kWh and Watt don't, the tool flags them as not directly compatible rather than returning a meaningless number.
What should I convert kWh to instead?
Use another energy unit, such as one of the related kWh conversions linked below.
What should I convert Watt to instead?
Use another power unit, such as one of the related Watt conversions linked below.
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About this conversion
This page compares kWh (kWh) and Watt (W) within the engineering converter.
A kilowatt-hour is 3.6 million joules. The watt is one joule per second.
Because kWh measures energy and Watt 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.