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Motor torque calculator

Calculates the motor rated torque from the motor rated power and the motor rated speed.

See Also


  • Motor rating (P): Motor rated power in kW from the nameplate or datasheet.
  • Motor speed (N): Motor rated speed in RPM from the nameplate or datasheet. Not the synchronous speed.

How to calculate motor torque?

The motor rated torque is calculated with the following equation:

\(T=\displaystyle \frac{60}{2\pi}\cdot \displaystyle \frac {P \cdot 1000}{N}\)


  • T is the motor rated torque in N.m.
  • P is the motor rated power in kW.
  • N is the motor rated speed in RPM. Not the synchronous speed.