Convert Newton metres to Pound-force inches
Convert Newton metres (N·m) to Pound-force inches (lbf·in) instantly and accurately.
Conversion Formula
lbf·in = N·m × 8.850745791
About Newton metres
The newton metre (N·m) is the SI coherent derived unit of torque and bending moment. Car engine torque is commonly quoted in N·m - a family hatchback delivers 150-250 N·m; a performance saloon 400-600 N·m. Fastener pre-load torques, EV traction-motor ratings, and structural connection bolt specifications are all given in N·m. 1 N·m = 100 N·cm = 1000 N·mm ≈ 0.7376 lbf·ft ≈ 8.851 lbf·in.
About Pound-force inches
The pound-force inch (lbf·in) equals ≈ 0.11299 N·m, the dominant US customary unit for motor and machinery documentation. Rockwell Automation, Parker Hannifin, and Allied Motion servo catalogs express stall and rated torques in lbf·in; US machine-tool spindles and conveyor drive gearboxes are also specified in lbf·in. Typical fractional-horsepower motor torques: 5-200 lbf·in. 1 lbf·in ≈ 0.11299 N·m = 16 ozf·in = 1/12 lbf·ft.
Quick Reference Table
| Newton metres (N·m) | Pound-force inches (lbf·in) |
|---|---|
| 1 N·m | 8.85075 lbf·in |
| 2 N·m | 17.7015 lbf·in |
| 5 N·m | 44.2537 lbf·in |
| 10 N·m | 88.5075 lbf·in |
| 25 N·m | 221.269 lbf·in |
| 50 N·m | 442.537 lbf·in |
| 100 N·m | 885.075 lbf·in |