Torque Calculator

Use τ = rF sin θ and convert newton-meters to pound-feet and pound-inches.

Force

Lever arm

Angle between r and Fdegrees

—N·m

—lb·ft

—lb·in

—sin θ factor

—τ = rF sin θ. Torque is not labeled as joules even though N·m has the same dimensions.

These are idealized classical-physics calculations. Real systems can differ because of air resistance, friction, deformation, measurement uncertainty, non-constant forces, or other effects not included in the selected model.

How to use this Torque Calculator

Calculate torque from force, lever arm, and angle. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.