About Torque

Torque (or moment of force) is the rotational equivalent of linear force: τ = F × r (force × lever arm). The SI unit is the newton-metre (N·m). Car engines produce torque to accelerate — high torque at low RPM is key for towing. Pound-foot (lb·ft) is used in the US automotive industry.

Common Conversions

  • 1 N·m = 0.7376 lb·ft
  • 1 lb·ft = 1.3558 N·m
  • 1 N·m = 8.851 lb·in
  • 1 kgf·m = 9.807 N·m
  • 1 lb·ft = 12 lb·in

Real-World Torque Values

  • Wheel lug nuts: 100–130 N·m
  • Small engine (100cc bike): ~8 N·m
  • Family sedan engine: 150–250 N·m
  • Diesel truck engine: 1,000–2,500 N·m
  • Human hand grip (tightening): ~2–5 N·m