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.

Kilogram-force meter (kgf·m) is a metric technical unit of torque commonly used in Japan, China, and other Asian countries for engine and motor specifications. While not part of the SI system, it remains standard in automotive specifications throughout East Asia. One kgf·m equals approximately 9.807 newton-meters or about 7.233 pound-feet.