Common uses
- Car engine torque — Nm in Europe and Asia, lb-ft in the US.
- Wheel nut and bolt tightening specs — check your manual's unit.
- Bicycle components — often in Nm, small screws in lb-in.
1 kgf·m = 9.807 Nm; 1 lb-in = 0.113 Nm.
Frequently asked questions
Is lb-ft the same as ft-lb?
For torque, people use both; ft-lb is also a unit of energy, so lb-ft is clearer for torque.
What torque for car wheel nuts?
Commonly 80–140 Nm (60–100 lb-ft); always follow the manufacturer's value.
What is kgf·m?
Kilogram-force metre, an older metric torque unit (9.80665 Nm).

