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.

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.