Horsepower to Kilowatts Converter (hp to kW)

Type a value in horsepower to see it in kilowatts instantly.

1 horsepower (hp) = 0.745699872 kilowatts (kW)

1 kilowatt (kW) = 1.34102209 horsepower (hp)

Horsepower (hp)

Kilowatts (kW)

150 hp = 111.8549807 kW

Open in the full converter to compare with other power units.

How to convert horsepower to kilowatts

Multiply the number of horsepower by 0.745699872, or divide by 1.34102209.

kW = hp × 0.745699872 (or hp ÷ 1.34102209)

Example: 150 hp × 0.745699872 = 111.855 kW

This page uses mechanical (imperial) horsepower, 745.7 W. European car specs often quote metric horsepower (PS or CV), which is 735.5 W — so a 150 PS engine is 110.3 kW.

hp to kW conversion table

Horsepower (hp)	Kilowatts (kW)
1 hp	0.7457 kW
5 hp	3.7285 kW
10 hp	7.457 kW
25 hp	18.6425 kW
50 hp	37.285 kW
75 hp	55.9275 kW
100 hp	74.57 kW
150 hp	111.855 kW
200 hp	149.14 kW
250 hp	186.425 kW
300 hp	223.71 kW
400 hp	298.28 kW
500 hp	372.85 kW
750 hp	559.275 kW
1,000 hp	745.7 kW

About the units

Horsepower (hp)

Mechanical (imperial) horsepower is 550 foot-pounds per second, about 745.7 watts. Metric horsepower (PS, CV) is slightly smaller at 735.5 W.

Kilowatt (kW)

A kilowatt is 1,000 watts. EU vehicle registration documents, electric motors and home appliances are rated in kilowatts.

Frequently asked questions

How many kilowatts are in 1 horsepower?

1 horsepower equals 0.745699872 kilowatts.

How do I convert horsepower to kilowatts?

Multiply the number of horsepower by 0.745699872, or divide by 1.34102209. For example, 150 hp × 0.745699872 = 111.855 kW.

How many horsepower are in 1 kilowatt?

1 kilowatt equals 1.34102209 horsepower.

Is hp the same as PS?

No. Mechanical horsepower (hp) is 745.7 W; metric horsepower (PS, CV, pk) is 735.5 W, about 1.4% smaller.

Related conversions

Background reading: SI Derived Units.