Power Converter
Convert power between watts, kilowatts, megawatts, horsepower, metric horsepower, BTU per hour, and foot-pounds per second.
Independently verified for accuracy
Calculator by Toolsloft ↗- Result
- 0.7457 Kilowatts (kW)
- Conversion
- 1 Horsepower (hp) = 0.7457 Kilowatts (kW)
Convert power between watts, kilowatts, horsepower, and more, whether you are comparing an engine rating to an electric motor or sizing a heater in BTU per hour. Enter a value and pick the two units.
How this is calculated
Values route through the watt, the SI unit of power. One mechanical horsepower is 550 foot-pounds of force per second, which works out to about 745.7 watts. Metric horsepower (PS) is 735.49875 watts, and one BTU per hour is 1055.05585262 divided by 3600 watts.
How to use
- Enter the amount of power.
- Choose the unit you have and the unit you want.
- Read the result, or press Swap to reverse the direction.
Examples
- Horsepower to kilowatts:
100 hp = 74.569987 kW - Kilowatt to horsepower:
1 kW = 1.341022 hp - Metric horsepower:
1 PS = 735.49875 W
FAQ
- How many watts are in one horsepower?
- One mechanical horsepower is about 745.7 watts. Metric horsepower (PS) is slightly less at 735.5 watts.
- What is the difference between hp and PS?
- hp is mechanical horsepower based on 550 foot-pounds per second. PS is metric horsepower, common on European car specs, and is a little smaller.