What is the formula and units for torque?

The formula for torque (τ) is given by τ = r × F, where τ is the torque, r is the lever arm distance (the perpendicular distance from the axis of rotation to the line of action of the force), and F is the applied force. The units of torque in the International System of Units (SI) are newton-meters (N·m). In the imperial system, torque can also be expressed in foot-pounds (ft·lb).