Force and Torque
lbf·intoN·m
Convert pound-force inches (lbf·in) to newton-metres (N·m).
Factor1 lbf·in = 0.1129848 N·m
Converter
lbf·in
Accepts numbers or expressions, e.g. 150 + 14.7
Result
N·m
Rendered to 6 significant figures.
Formula
Formula
N·m = lbf·in × 0.1129848
Multiply any value in pound-force inches by 0.1129848 to obtain the value in newton-metres.
Worked example
Convert 100 lbf·in to N·m.
- 01Start with 100 lbf·in.
- 02Multiply by the conversion factor: 100 × 0.1129848 = 11.2985 N·m.
Result100 lbf·in = 11.2985 N·m
Conversion table
| lbf·in | N·m |
|---|---|
| 1 | 0.11298 |
| 2 | 0.22597 |
| 5 | 0.56492 |
| 10 | 1.1298 |
| 20 | 2.2597 |
| 50 | 5.6492 |
| 100 | 11.298 |
| 200 | 22.597 |
| 500 | 56.492 |
| 1000 | 112.98 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from lbf·in to N·m?
1 lbf·in equals 0.1129848 N·m. To convert, multiply the value in pound-force inches by 0.1129848.
How do I convert 1 lbf·in to N·m?
1 lbf·in = 0.112985 N·m. For any value, multiply by 0.1129848.
How do I convert N·m back to lbf·in?
Divide by the same factor — or equivalently, multiply by 8.850746. So 1 N·m = 8.85075 lbf·in.
When would I need to convert pound-force inch to newton-metre?
Torque conversions between lbf·in and N·m 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).