Calculate torque

⚙️ Torque Calculations

Torque is a key parameter for electric motors and drives. Calculate the relationship between power, speed, and torque precisely.

Available Calculations:

Torque: Md = 9550 × P / n

Calculate torque from power and speed

Torque in Electric Motors

Torque indicates the rotational force of a motor and is crucial for the selection of drives. The calculation links power (in kW), speed (in rpm), and torque (in Nm).

Torque Calculation
Md = 9550 × P / n

Calculate the torque, power, or speed of a motor.

Md = 9550 × P / n

💡 Enter the known values – leave the field you want to calculate empty.

✅ Result:

Example Calculation:
A standard three-phase motor has a rated speed of 1420 revolutions and a mechanical output power of 15 kW at the motor shaft. What is the motor torque at rated speed?
Md = 9550 × P / n
Md = 9550 × 15 kW / 1420 min⁻¹
Md = 100.88 Nm

For your information: This calculator is only suitable for electric motors without gearboxes!

Units of Measurement:
Torque Md = Newton-meter [Nm]
Power P = Kilowatt [kW]
Speed n = Revolutions per minute [min⁻¹]

Torque formula

Md = 9550 × P / n

The torque Md in Newton meters (Nm) results from the mechanical power on the motor shaft P in kilowatts (kW) and the speed n in revolutions per minute (min⁻¹). The calculator can be used in all directions: If two of the three values ​​are known, it calculates the third.

  • Torque: Md = 9550 × P / n
  • Power: P = Md × n / 9550
  • Speed: n = 9550 × P / Md

What does the torque say?

Torque indicates the rotating power of a motor and is a key parameter when selecting electric motors and drives.

Calculation example

An electric motor delivers 3 kW to the shaft and rotates at 1400 rpm.

Md = 9550 × 3 kW / 1400 min⁻¹
Md = 20.46 Nm

Note: The calculator is only suitable for electric motors without gears.