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ExactUnit

Power converter

Convert rates of energy transfer, including watts and explicitly defined horsepower.

Unit converter
Edit either value
1 W = 0.001 kW

Results rounded to 12 significant digits.

All power conversions

Choose your starting unit. Each direction has its own calculator, formula, and examples.

Convert Watts

Convert Kilowatts

Convert Megawatts

Convert Mechanical horsepower

Convert Metric horsepower

Convert Btu IT per hour

Using power measurements

Mechanical horsepower is 550 foot-pounds-force per second. Metric horsepower uses 75 kilogram-force meters per second and has a different value. Carry the same physical assumptions into subsequent physics calculations.

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