Power, Torque & Speed
Torque from Force and Radius Calculator
Enter a tangential force and perpendicular lever radius to calculate the resulting torque about the shaft or pivot.
Inputs
Formula
Torque from tangential force
Worked example
Using the default values shown in the calculator, the same formula gives the following result. This is a quick sanity check for the calculation, not a design recommendation.
Inputs
- Tangential force
- 500 N
- Lever radius
- 100 mm
Result
- Torque
- 50 N*m
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Technical references for this calculation
Frequently asked questions
Why must the force be tangential?
Only the component of force perpendicular to the radius contributes fully to torque. A force at another angle requires resolving that perpendicular component.
Can I use a pulley or sprocket radius?
Yes, when the entered force is the tangential force acting at that effective or pitch radius.