Enter the voltage, current, efficiency, and rpm of an electric motor to determine the torque produced by the motor.

## Electric Motor Torque Formula

The following formula is used to calculate an electric motor torque.

t = (I*V*E/100*60)/(rpm*2*pi)

- Where I is the current (amps)
- V is the voltage (volts)
- E is the efficiency of the motor (%)
- RPM is the rotations per minute

## Electric Motor Torque Definition

An electric motor torque is the total torque generated by an electric motor given a current, voltage, efficiency, and RPM.

## Electric Motor Torque Example

How to calculate an electric motor torque?

**First, determine the current.**Calculate the current delivered to the engine.

**Next, determine the voltage.**Calculate the voltage delivered to the motor.

**Next, determine the efficiency.**Measure the percentage of energy that goes to usable torque.

**Next, determine the RPM.**Measure the rotations per minute of the motor.

**Finally, calculate the torque.**Calculate the motor torque using the equation above.

## FAQ

**What is an electric motor?**

An electric motor is a device that turns electricity into mechanical work.

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