Motor Torque Calculator

Calculate the torque of an induction or servo motor by entering the motor's rated speed and power.

Enter the rated power of the motor
RPM
Enter the rated speed of the motor

Torque Meter

0.00 N·m

About Motor Torque

Torque is a measure of the rotational force a motor can produce. For AC induction motors and servo motors, torque can be calculated from the power and speed using the formula:

T = (9550 × P) ÷ n

Where:

  • T = Torque in Newton-meters (N·m)
  • P = Power in kilowatts (kW)
  • n = Rotational speed in RPM
  • 9550 = Conversion constant (60 ÷ 2π × 1000)
Common Conversions:
  • 1 HP = 0.7457 kW
  • 1 N·m = 0.7376 lb·ft
  • 1 N·m = 0.1020 kg·m