Horsepower to watts — the exact conversion
One mechanical horsepower equals 745.6999 watts. This converter turns horsepower (hp) into watts (W) and back, using the precise definition of 745.69987158 W per horsepower (550 ft·lbf/s).
Mechanical horsepower is the figure quoted for car engines, pumps and motors in the US and UK. To get kilowatts, simply divide the watt result by 1000 — for example, 200 hp is about 149,140 W, or 149.14 kW.
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