With this online calculator you can quickly convert kilowatt to horsepower, or horsepower to kilowatts. Enter a value in one of the fields below and press the button for the result. Any questions? Please contact us at customerservice@kw-naar-pk.nl.

Calculate hp or kW of your car, boat, generator, scooter or other engines.

Horsepower (hp) is a unit of measurement of power (the rate at which work is done). There are many different standards and types of horsepower. The most common horsepower—especially for electrical power—is 1 hp = 746 watts. The term was adopted in the late 18th century by Scottish engineer James Watt to compare the output of steam engines with the power of draft horses. It was later expanded to include the output power of other types of piston engines, as well as turbines, electric motors and other machinery. The definition of the unit varied between geographical regions. Most countries now use the SI unit watt for measurement of power. With the implementation of the EU Directive 80/181/EEC on January 1, 2010, the use of horsepower in the EU is permitted only as a supplementary unit.