How many kilowatts are in a horsepower?

1 hp = 0.7457 kW. To convert any amount, multiply by 0.7457.

How do you convert horsepower to kilowatts?

Multiply the number of horsepower by 0.7457 to get kilowatts. The formula is shown in the "How it's calculated" section above.

Where does the conversion factor come from?

It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.

Unit converter — Power

Horsepower to kilowatts converter

Convert horsepower (hp) to kilowatts (kW). Source-cited conversion factor, exact to the displayed precision.

Results are mathematically exact for the displayed precision. How we calculate.

How it's calculated

Convert horsepower to kilowatts— the formula

Horsepower convert to kilowatts by multiplying by the published conversion factor. The factor below is exact to the precision shown, sourced from the citation under the formula.

kW = hp × 0.7457

hp = kW × 1.341

Watt: SI derived. 1 hp (mechanical) = 745.6998715822702 W; 1 BTU/hr = 0.29307107 W (NIST SP 811).

Questions

Frequently asked questions

How many kilowatts are in a horsepower?
1 hp = 0.7457 kW. To convert any amount, multiply by 0.7457.
How do you convert horsepower to kilowatts?
Multiply the number of horsepower by 0.7457 to get kilowatts. The formula is shown in the "How it's calculated" section above.
Where does the conversion factor come from?
It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.