Horsepower, Torque and RPM Calculator

Horsepower, Torque and RPM Calculator

Calculate RPM from horsepower and torque

The formula to calculate Rev. Per Min(RPM) is:

RPM = Horsepower * 5252 / torque;

With our online Horsepower, Torque & RPM Calculator. Power can be measured in

  • Horsepower (HP),
  • Watts (W) or
  • Kilowatts (kW). 

Torque can be measured in 

  • Pound-inch
  • Pound-foot
  • Newton-meter
  • Newton-centimeter
  • Gram-meter
  • Kilogram-centimeter
  • Kilogram-meter

Use our official mobile app to calculate Horsepower, Torque, and RPM. Additionally, we have hundreds of other calculators to choose from.

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How do you calculate horsepower from torque and rpm? 

It is calculated as follows: H = T x rpm/5252 where

  • H is horsepower,
  • T is pound-feet,
  • rpm is the speed of the engine, and
  • 5252 is a constant that makes the units correspond.

How do you convert torque to horsepower?

The horsepower of an engine is calculated by multiplying the torque by the engine’s RPM and dividing it by 5,252.

At what rpm does torque and horsepower cross?

Gasoline engines will always have a horsepower curve and a torque curve crossing at 5,252 RPM. The answer is in this video.

For more information about the Feed Rate Calculator check Milling Machine: Feed Rate Calculator.

Waheed Akhtar
Waheed Akhtar is a spirited DIY enthusiast interested in handyman projects. He enjoys tackling home improvement tasks, from woodworking and carpentry to plumbing and electrical work.



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