Enter the stall current (amps) and the motor’s torque constant (N-m/amp) into the calculator to determine the Stall Torque.

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## Stall Torque Formula

The following formula is used to calculate the Stall Torque.

**Tstall = Is * K**

- Where Tstall is the Stall Torque (N-m)
- Is is the stall current (amps)
- K is the motor’s torque constant (N-m/amp)

## How to Calculate Stall Torque?

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

**Example Problem #1:**

- First, determine the stall current (amps). In this example, the stall current (amps) is measured to be 120.
- Next, determine the motor’s torque constant (N-m/amp). For this problem, the motor’s torque constant (N-m/amp) is calculated to be 50.
- Finally, calculate the Stall Torque using the formula above:

Tstall = Is * K

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

Tstall = 120*50 = 6,000 (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:

stall current (amps) = 60

motor’s torque constant (N-m/amp) = 20

Entering these values yields:

Tstall = 60 * 20 = 1200 (N-m)