Torque Calculator — Torque, Force & Rotational Power

Torque (N·m) = Force (N) × Distance (m) × sin(θ), where θ is the angle between the force vector and the lever arm. For the most common case (force applied perpendicular to the lever arm, θ=90°), this simplifies to Torque = Force × Distance, since sin(90°) = 1.

Power (Watts) = Torque (N·m) × Angular velocity (rad/s). If you know RPM instead: Power (W) = (Torque × RPM × 2π) / 60. This is commonly used in motor and engine specifications to relate torque output to power output at a given rotation speed.

Torque measures rotational force (how hard the engine can "push"), while horsepower measures the rate of doing work (how fast that push translates to speed). A high-torque, low-RPM engine is good for towing/hauling; high horsepower at high RPM favors top speed. They're mathematically linked via RPM: HP = (Torque in lb-ft × RPM) / 5252.