The newton-meter (N·m) is the SI unit of torque, measuring the rotational force produced when one newton of force is applied at a one-meter distance from the pivot point. It is the standard unit for engine torque specifications, bolt tightening requirements, and mechanical design worldwide. One newton-meter equals approximately 0.7376 pound-feet.

Pound-foot (lb·ft) is the imperial unit of torque used primarily in the United States and UK for automotive engine specifications and mechanical fastener tightening. Car enthusiasts discuss engine output in lb·ft, and torque wrenches in the US are calibrated in this unit. One pound-foot equals approximately 1.356 newton-meters.