Free · Everyday · Engineering

Engine Horsepower Calculator

Calculate engine horsepower and kilowatts from torque and rotational speed.

  • Checked formula
  • Private in your browser
  • No signup
Calculator inputs

Enter your values

Result

Your calculation

Engine horsepower
257 hp
torque × rpm ÷ 5252
Power
191.7 kW
Torque
406.7 N·m

How to use this calculator

  1. Enter the values and choose the units that match your situation.
  2. Calculate to see the primary answer and useful conversions.
  3. Review the assumptions before using the result for a project or decision.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.