- 1). Calculate the length of the motor's lever arm from the data you have. The length should be expressed in feet, which may involve converting the units from meters. If necessary, you can use the conversion calculator provided in the resources section of this article.
- 2). Calculate the force that the motor is capable of exerting on the lever arm. The force should be expressed in pounds, which may involve converting the units from newtons. If necessary, use the conversion calculator provided in the resources section of this article.
- 3). Multiply the length of the motor by the force of the motor. The product of the two numbers is the torque of your motor expressed in pound-feet.