Convert Newton millimetres to Pound-force inches
Convert Newton millimetres (N·mm) to Pound-force inches (lbf·in) instantly and accurately.
Conversion Formula
lbf·in = N·mm × 0.008850745791
About Newton millimetres
The newton millimetre (N·mm) equals 10⁻³ N·m, widely used in mechanical engineering and FEA software. ANSYS, Abaqus, and Siemens NX models built in millimetres report torques in N·mm for dimensional consistency. Fastener torque for M3-M6 screws (typically 0.3-5 N·m range), micro-pump impeller loads, and precision gearbox calibration values are expressed in N·mm. 1 N·mm = 10⁻³ N·m = 0.1 N·cm ≈ 8.851 × 10⁻³ 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 millimetres (N·mm) | Pound-force inches (lbf·in) |
|---|---|
| 1 N·mm | 0.00885075 lbf·in |
| 2 N·mm | 0.0177015 lbf·in |
| 5 N·mm | 0.0442537 lbf·in |
| 10 N·mm | 0.0885075 lbf·in |
| 25 N·mm | 0.221269 lbf·in |
| 50 N·mm | 0.442537 lbf·in |
| 100 N·mm | 0.885075 lbf·in |