🔧 Torque Calculator

Torque is the rotational equivalent of force. It measures how much a force causes an object to rotate about an axis. τ = F × d × sin(θ), measured in N·m or ft·lb.

τ = F × d × sin(θ), where F = applied force in newtons, d = perpendicular distance from the pivot in metres, and θ = angle between force and lever arm.

1 N·m = 0.7376 ft·lb. To convert, multiply N·m by 0.7376. For example, 100 N·m = 73.76 ft·lb.

Torque and moment of force refer to the same concept. Torque is typically used in dynamics (rotating systems), while moment is used in statics (structural analysis).

Torque is directly proportional to lever arm length. Doubling the lever arm doubles the torque for the same applied force — this is the principle behind wrenches and levers.

Maximum torque occurs when the force is applied perpendicular to the lever arm (θ = 90°), giving sin(90°) = 1. Any other angle reduces effective torque.