Torque Calculator
Enter force, lever arm length, and angle to calculate torque (τ=F·r·sinθ)
📊 Result Chart
About Torque Calculator
Torque (moment of force) is the physical quantity that causes an object to rotate, equal to force times lever arm (τ=F·r·sinθ). Torque is crucial in mechanical engineering, automotive manufacturing, and construction. This tool helps engineers, mechanics, and technicians quickly calculate torque magnitude, supporting multiple units for bolt tightening and engine design.
How to Use
- Enter the applied force (N or lbf)
- Enter the lever arm length (m or ft)
- Enter the angle between force and lever arm (degrees)
Related Tools
- Torque Converter — Convert N·m/lbf·ft/kgf·m
- Force Calculator — Newton's Second Law F=ma
- Bolt Torque Calculator — Calculate tightening torque
What is the difference between torque and moment?
In English, torque and moment of force are often used interchangeably. Torque typically refers to a force that causes rotation, while moment is a more general term. They are calculated the same way.
What are the units of torque?
The SI unit is Newton-meter (N·m). Common units include pound-force-foot (lbf·ft) and kilogram-force-meter (kgf·m). 1 lbf·ft ≈ 1.356 N·m.
Why does the angle matter for torque?
Torque magnitude depends on the angle between force and lever arm. Maximum torque occurs when the force is perpendicular (θ=90°); zero torque when parallel (θ=0°). This is why a wrench is most effective perpendicular to the bolt.