Free calculator estimate AC motor rating torque in Imperial and SI unit.

Motor Rating

Speed

RPM

Frequency

Hz

Motor Rating Torque | ||

Motor Poles |

## Motor Torque

The rating torque of a motor is the torque necessary to produce its rated power (in HP or kW) at rating speed.

In pounds at a foot radius, it is equal to the horsepower times 5252 divided by the rating speed.

In SI unit:

where:

- T : Motor torque in lbft or Nm
- P : Motor real power in HP or kW
- n : Motor speed in RPM