Metric horsepower to kilowatts converter

Enter power in metric horsepower or kilowatts and get the equivalent value immediately.

Metric horsepower
PS
Kilowatts
kW

How the metric-horsepower converter works

An engine gauge connected to an electric power meter

Enter power in metric horsepower or kilowatts. The second field updates immediately, and the centre button reverses the conversion.

One metric horsepower is exactly 0.73549875 kW

Metric horsepower, often marked PS, is based on 75 kilogram-force metres per second. With standard gravity fixed at 9.80665 m/s², that definition gives exactly 735.49875 watts.

PkW=0.73549875PPS,PPS=PkW0.73549875P_{\mathrm{kW}}=0.73549875\,P_{\mathrm{PS}},\qquad P_{\mathrm{PS}}=\frac{P_{\mathrm{kW}}}{0.73549875}

Useful engine-power checks

PS and mechanical hp are not the same

This page converts metric horsepower. Mechanical horsepower, commonly used in the United States and sometimes written hp, is about 745.699872 W. It is roughly 1.4% larger, so the label in a specification matters.

A unit conversion does not estimate drivetrain loss or motor efficiency. Compare ratings measured at the same point, such as shaft output with shaft output. Kilowatts measure power; kilowatt-hours measure energy used over time.

Questions about horsepower and kilowatts

These distinctions prevent most errors when comparing vehicle and motor specifications.

How many kilowatts are in one metric horsepower?

One metric horsepower is exactly 0.73549875 kW.

How do I convert kW to metric horsepower?

Divide the kilowatt value by 0.73549875. One kilowatt is approximately 1.359621617304 PS.

Are PS and hp identical?

Not always. PS normally means metric horsepower, while hp may mean mechanical horsepower, which is slightly larger.

Does the converter account for engine efficiency?

No. It changes units only and leaves the physical power value unchanged.

Is kW the same as kWh?

No. Kilowatts measure power, while kilowatt-hours measure energy accumulated over time.

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