Horsepower (hp) and kilowatts (kW) are both units used to measure power, with kilowatts being the standard unit in the International System of Units (SI). To convert horsepower to kilowatts, it's essential to recognize the type of horsepower being referenced, as definitions can vary. One mechanical horsepower is approximately equal to 0.7457 kilowatts, while one metric horsepower is about 0.7355 kilowatts. The conversion formulas are as follows: