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Horsepower to kilowatts

Unit conversion
Physics

How many kilowatts is a horsepower?

Multiply mechanical horsepower by 0.7456998716 to get kilowatts, or enter any power to convert it.

Result

0.7457 kW

1 horsepower is about 0.7457 kilowatts

  • The other way round: 1 kW ≈ 1.341 hp.
  • Exact by definition: 1 kW = 1,000 W.

In all units

Milliwatts
745,700 mW
Watts
745.7 W
Kilowatts
0.7457 kW
Megawatts
0.0007457 MW
Horsepower
1 hp
Metric horsepower
1.014 PS
BTU per hour
2,544 BTU/h

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Multiply mechanical horsepower by 0.7456998716 to get kilowatts, or enter any power to convert it.

How to use

  1. Type the power you want to convert.
  2. Choose the units to convert from and to. Use the swap button to flip them.

kW → hp

kWhp
11.341
5067.0511
75100.5767
100134.1022
150201.1533
200268.2044

How it works

Every unit is converted through watts using exact definitions: a kilowatt is 1,000 W, a megawatt is a million W, mechanical horsepower is 550 foot-pounds of force per second (about 745.7 W), metric horsepower (PS) is 75 kilogram-force metres per second (735.49875 W), and a BTU per hour is a British thermal unit spread over an hour (about 0.293 W). So 100 kW is about 134.1 hp.

The watt comes from the BIPM SI Brochure; the horsepower and BTU definitions from NIST Special Publication 811.

Horsepower comes in several versions. This converter has the mechanical (imperial) horsepower and the metric one, which differ by about 1.4 %. Car makers outside the US usually quote metric.

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