App description

Rotary horsepower calculator

Calculation of rotational horsepower, torque, speed

Select the appropriate unit and enter a value and click on "Calculate". The result will be displayed.

Calculation formula

\(rotating horsepower=\frac {torque×speed}{5252}\)

\ (torque = \frac {5252 × horsepower} {speed} \)

\(speed=\frac {5252×horse}{torque}\)

Usage example

Known data: torque; speed, what is the rotational horsepower?

Input data: Torque: 1000 lb-ft; Speed: 10 rpm

Output: Rotating horsepower: 0.019040 hp