Force and Torque
N·mtolbf·in
Convert newton-metres (N·m) to pound-force inches (lbf·in).
Factor1 N·m = 8.850746 lbf·in
Converter
N·m
Accepts numbers or expressions, e.g. 150 + 14.7
Result
lbf·in
Rendered to 6 significant figures.
Formula
Formula
lbf·in = N·m × 8.850746
Multiply any value in newton-metres by 8.850746 to obtain the value in pound-force inches.
Worked example
Convert 10 N·m to lbf·in.
- 01Start with 10 N·m.
- 02Multiply by the conversion factor: 10 × 8.850746 = 88.5075 lbf·in.
Result10 N·m = 88.5075 lbf·in
Conversion table
| N·m | lbf·in |
|---|---|
| 1 | 8.8507 |
| 2 | 17.701 |
| 5 | 44.254 |
| 10 | 88.507 |
| 20 | 177.01 |
| 50 | 442.54 |
| 100 | 885.07 |
| 200 | 1770.1 |
| 500 | 4425.4 |
| 1000 | 8850.7 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from N·m to lbf·in?
1 N·m equals 8.850746 lbf·in. To convert, multiply the value in newton-metres by 8.850746.
How do I convert 1 N·m to lbf·in?
1 N·m = 8.85075 lbf·in. For any value, multiply by 8.850746.
How do I convert lbf·in back to N·m?
Divide by the same factor — or equivalently, multiply by 0.1129848. So 1 lbf·in = 0.112985 N·m.
When would I need to convert newton-metre to pound-force inch?
Torque conversions between N·m and lbf·in are needed in fastener specification, mechanical equipment design, drivetrain analysis and lifting/rigging calculations. Newton-metre (N·m) is the SI standard; lbf·ft and lbf·in dominate US fastener and machinery datasheets; kgf·m appears in legacy metric documentation. Display symbol is N·m — never the abbreviation "nm", which denotes nanometre.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).