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Kilowatts to hp (kW to hp)

To convert kilowatts to hp (kW to hp): one kilowatt is 1.3410221 mechanical horsepower, so 100 kW is 134.102 hp.

Swap units: hp to kW

In mechanical horsepower134.102 hp

Conversion factor Exact by definition: both units are fixed in terms of SI units, so the factor is set by definition rather than measured.
1 kilowatt = 1.34102209 mechanical horsepower
The other way
1 mechanical horsepower = 0.7456998716 kilowatts
Working
100 x 1.34102209 = 134.102
100 kW in every unit
100,000 W 100 kW 0.1 MW 134.1 hp 135.96 PS 341,214 BTU/h 28.435 ton
kilowatts to mechanical horsepower
kWhp
11.34102
22.68204
56.70511
1013.4102
2533.5256
5067.0511
100134.102

How the Unit Converter works

One kilowatt is 1.3410220896 mechanical horsepower, the reciprocal of 745.6998715822702 watts per horsepower.

Worked through: 75 kW x 1.34102209 = 100.577 hp.

Going the other way, one mechanical horsepower is 0.7456998716 kilowatts.

For mental arithmetic: Multiply by 1.34.

The direction that matters for electric vehicles, which are rated in kilowatts because that is what the motor and the charger deal in. A 150 kW motor is about 201 hp. The confusion to avoid is kW against kWh: kilowatts are a rate and kilowatt-hours are an amount, so a 150 kW motor drawing from a 75 kWh battery runs flat in half an hour at full output. Charger ratings are in kW for the same reason: a 50 kW charger adds about 50 kWh in an hour.

Precision is worth matching to the input. A measurement given as 1 kW carries one or two significant figures, and reporting its conversion to six implies a precision the original never had.

Unit Converter FAQ

How many mechanical horsepower are in a kilowatt?

1.3410221. One kilowatt is 1.3410220896 mechanical horsepower, the reciprocal of 745.6998715822702 watts per horsepower.

What is 100 kW in mechanical horsepower?

134.102 hp. Multiply by 1.3410221: 75 kW x 1.34102209 = 100.577 hp.

How do I convert mechanical horsepower back to kilowatts?

Divide by 1.3410221, or equivalently multiply by 0.74569987. One mechanical horsepower is 0.74569987 kilowatts. The two factors are reciprocals, so you only need to remember one of them.

Is there a quick way to do this in my head?

Multiply by 1.34. It is close enough for everyday use.

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