Power converter

Enter your power and choose the units. The answer updates as you type.

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Value

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Converted value

Precision and other units

Decimals, fractions and scientific notation work here.

Significant digits

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Power is the rate of energy transfer. Mechanical and metric horsepower use different definitions; Btu uses the international-table definition.

The same value in other units
Unit	Value

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Updated 2026-09-19

How to convert power

Power is the rate of energy transfer. Mechanical and metric horsepower use different definitions; Btu uses the international-table definition.

Multiply by the source unit factor to get the base quantity, then divide by the target factor. The other-units table compares the same value without retyping it.

Next: Energy converter

A worked example

2.5 kilowatts × 1000 = 2500 watts.

Next: Torque converter

Before you use the result

Displayed values are rounded; extra digits do not make your measurement more accurate. Power is the rate of energy transfer. Mechanical and metric horsepower use different definitions; Btu uses the international-table definition.

kilowatts (kW) to watts (W): reference values

kilowatts (kW)	watts (W)
1	1000
10	10000
100	100000

Calculated with the same conversion as the tool above.

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ToolOctopus. “Power converter.” Updated 2026-09-19. https://tooloctopus.com/power-converter.

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