What is a Horsepower (hp)?

Horsepower (hp) is a unit of power equal to approximately 745.7 watts, originally defined by James Watt.

Definition

Symbol

hp

Category

Power

System

Imperial

1 {unit} = {value} {otherUnit}

1 Horsepower = 745.7 Watt (W)

1 Horsepower = 0.7457 Kilowatt (kW)

1 Horsepower = 0.0007457 Megawatt (MW)

1 Horsepower = 2544.43 BTU/hour (BTU/h)

1 Horsepower = 178.227 Calorie/second (cal/s)

Common Uses

  • Car engine power
  • Electric motor ratings
  • Lawn mower specifications

Horsepower Conversions

Related Units