6XC

Power Unit Converter

Convert between watts, kilowatts, megawatts, metric horsepower, BTU/hour and calories/second — all at once, live.

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Watt (W)—
Kilowatt (kW)—
Megawatt (MW)—
Horsepower (hp)—
BTU/hour—
Calorie/second—

Every Power Unit, At Once

Type a value in any unit and see it instantly converted to all the others — electrical (W, kW, MW), mechanical (metric horsepower) and thermal (BTU/h, cal/s) side by side.

Frequently Asked Questions

Which horsepower definition is used?

Metric horsepower (PS/CV, 735.49875 W) — the definition used across most of the world outside the US. Mechanical (imperial) horsepower is very close at 745.7 W, a roughly 1.4% difference.

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