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Torque Calculator
Torque is the turning effect of a force. Calculate torque, force or lever arm length.
Torque Calculator
τ = r × F × sin(θ) — find torque, force, or radius
τ = r × F × sin(θ) | 1 N·m = 0.7376 lbf·ft
N
m
deg
Torque
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in kN·m
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in lbf·ft
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in lbf·in
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Step-by-Step
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About the Torque Calculator
Torque is the turning effect of a force. Calculate torque, force or lever arm length.
How to use the Torque Calculator
- Enter two of Force (F), Lever Arm (r) and Torque (τ), plus the Angle θ between the force and the lever.
- Press the matching Find button or Calculate.
Formula and method
τ = r × F × sin θ. At 90° the force is most effective.
Worked example
A 50 N force applied 0.5 m from the pivot at 90° gives 25 N·m of torque.
Tips
- A longer wrench gives more torque for the same force.
- Torque is measured in newton-metres (N·m).
Frequently asked questions
What is the difference between torque and work?
They share units dimensionally, but torque is a turning effect (a vector) whereas work is energy transferred.