Enter the motor torque constant (N-m/amp) and the total current (amps) into the calculator to determine the Stepper Motor Torque.

- All Torque Calculators
- Stepper Motor Voltage Calculator
- DC Motor Torque Calculator
- Electric Motor Torque Calculator
- Servo Torque Calculator
- Load Torque Calculator
- Stall Torque Calculator
- AC Motor Torque Calculator

## Stepper Motor Torque Formula

The following formula is used to calculate the Stepper Motor Torque.

**Tsm = KT*i**

- Where Tsm is the Stepper Motor Torque (N-m)
- KT is the motor torque constant (N-m/amp)
- i is the total current (amps)

## How to Calculate Stepper Motor Torque?

The following two example problems outline how to calculate the Stepper Motor Torque.

**Example Problem #1:**

- First, determine the motor torque constant (N-m/amp). In this example, the motor torque constant (N-m/amp) is measured to be 40.
- Next, determine the total current (amps). For this problem, the total current (amps) is calculated to be 100.
- Finally, calculate the Stepper Motor Torque using the formula above:

Tsm = KT*i

Inserting the values from above and solving the equation with the imputed values gives:

Tsm = 40*100 = 4000 (N-m)

**Example Problem #2: **

Using the same process as example problem 1, we first define the variables outlined by the formula. In this case, the values are:

motor torque constant (N-m/amp) = 30

total current (amps) = 20

Entering these values yields:

Tsm = 30*20 = 600 (N-m)