Answer: One horsepower is approximately equal to 0.7457 kilowatts.

The conversion between horsepower (hp) and kilowatts (kW) involves a specific conversion factor. This conversion factor is based on the definition of one horsepower, which is the power required to lift 550 pounds (about 250 kilograms) by one foot (about 0.3048 meters) in one second.

Mathematically, the conversion is expressed as:

1 horsepower ≈ 0.7457 kilowatts

This conversion is commonly used in the context of power ratings for various engines and motors. For example, if you have a device rated at 100 horsepower, you can convert it to kilowatts by multiplying the horsepower value by the conversion factor:

100 horsepower × 0.7457 kW/hp ≈ 74.57 kilowatts

So, 100 horsepower is approximately equal to 74.57 kilowatts. This conversion is essential for comparing and understanding power ratings in different systems that may use either horsepower or kilowatts as the unit of measurement.