Horsepower, Watts, and Kilowatts

HP to Watts Converter

Convert horsepower to watts or kilowatts, convert watts and kW back to horsepower, and choose between mechanical horsepower and metric horsepower.

HP, Watts, and Kilowatts

Convert Horsepower to Watts

Convert mechanical or metric horsepower to watts and kilowatts, or convert watts and kW back to horsepower.

Horsepower

01000 hp

Horsepower Type

Reference: 1 mechanical horsepower equals 745.699872 watts. 1 metric horsepower equals 735.49875 watts.

HP to Watts Formula

For mechanical horsepower, watts = horsepower x 745.699872. For metric horsepower, watts = horsepower x 735.49875. Divide watts by 1,000 to get kilowatts.

Horsepower to Watts Chart

Mechanical HP	Watts	Kilowatts
1 hp	745.7 W	0.746 kW
5 hp	3,728.5 W	3.728 kW
10 hp	7,457 W	7.457 kW
50 hp	37,285 W	37.285 kW
100 hp	74,570 W	74.57 kW

Mechanical Horsepower vs Metric Horsepower

In many U.S. contexts, horsepower usually means mechanical horsepower. Metric horsepower is slightly smaller and appears in some international vehicle and engine specifications. Choose the type that matches your source.

Frequently Asked Questions

How many watts are in 1 horsepower?+

One mechanical horsepower equals 745.699872 watts. One metric horsepower equals 735.49875 watts.

How do you convert HP to watts?+

Multiply mechanical horsepower by 745.699872. For metric horsepower, multiply by 735.49875.

How do you convert watts to horsepower?+

Divide watts by 745.699872 for mechanical horsepower, or divide by 735.49875 for metric horsepower.

Is horsepower the same as kilowatts?+

No. Horsepower and kilowatts both measure power, but they use different units. One mechanical horsepower is about 0.746 kilowatts.