Horsepower is the standard unit for measuring engine power output, and calculating it from torque and RPM (revolutions per minute) is a fundamental task in automotive and mechanical engineering. This horsepower calculator uses the formula horsepower = (torque × RPM) ÷ 5252 to instantly compute power output when you know the torque and rotational speed of an engine. It's useful for car enthusiasts comparing engine specifications, students learning about mechanical power, or anyone working with motors and engines who needs to understand the relationship between torque, speed, and power output. Simply enter your torque and RPM values to see the resulting horsepower.