The pound-inch
The pound-inch equals 1/12 of a pound-foot, or about 0.113 N·m. Used for fine-fastener torque specs (small bolts, screws) where pound-feet would produce inconveniently small numbers.
Pound-inches to Newton-meters Converter
1 lb-in = 0.112985 N·m (pound-inch → newton-meter)
1 lb-in = 0.112985 N·m
1 pound-inch equals 0.112985 newton-meters. To convert pound-inches to newton-meters, multiply the pound-inch value by 0.112985. For quick reference: 1 lb-in = 0.112985 N·m, 5 lb-in = 0.564924 N·m, 10 lb-in = 1.12985 N·m, 100 lb-in = 11.2985 N·m.
Formula
Newton-meters = Pound-inches × 0.112985Quick
When to use pound-inches → newton-meters
Pound-inches to newton-metres multiplies by 0.112984829. A 25 lbf·in optics-mount spec is 2.82 N·m; a 100 lbf·in valve-cover bolt is 11.30 N·m. Pound-inches dominate US electronics, instrumentation, and light-fastener work where pound-feet would give fractions below one. Convert to N·m when applying a metric torque-screwdriver, and watch for the pound-foot/pound-inch distinction — they differ by a factor of 12, a common and expensive mix-up on small fasteners.
Consumer-electronics repair technicians convert this constantly when following a US teardown guide with a metric torque driver: a 15 lb-in laptop hinge-screw spec becomes 1.69 N·m, the figure that actually goes into a calibrated screwdriver imported from a metric market, since most precision electronics tools sold outside North America are graduated in newton-metres, not pound-inches.
How to convert pound-inches to newton-meters
Take your value
Start with your value in pound-inches.
Multiply by 0.112985
Multiply the pound-inch value by 0.112985. This is the exact conversion factor from pound-inches to newton-meters.
Read the result
The product is your value in newton-meters. For example, 5 lb-in × 0.112985 = 0.564924 N·m.
Conversion formula
The exact factor from pound-inches to newton-meters is 0.112985.
Newton-meters = Pound-inches × 0.112985
Pound-inches to Newton-meters conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Pound-inches (lb-in) | Newton-meters (N·m) |
|---|---|
| 0.1 lb-in | 0.011298 N·m |
| 0.5 lb-in | 0.056492 N·m |
| 1 lb-in | 0.11298 N·m |
| 2 lb-in | 0.22597 N·m |
| 5 lb-in | 0.56492 N·m |
| 8 lb-in | 0.90388 N·m |
| 10 lb-in | 1.1298 N·m |
| 15 lb-in | 1.6948 N·m |
| 20 lb-in | 2.2597 N·m |
| 25 lb-in | 2.8246 N·m |
| 30 lb-in | 3.3895 N·m |
| 40 lb-in | 4.5194 N·m |
| 50 lb-in | 5.6492 N·m |
| 60 lb-in | 6.7791 N·m |
| 75 lb-in | 8.4739 N·m |
| 90 lb-in | 10.169 N·m |
| 100 lb-in | 11.298 N·m |
| 125 lb-in | 14.123 N·m |
| 150 lb-in | 16.948 N·m |
| 175 lb-in | 19.772 N·m |
| 200 lb-in | 22.597 N·m |
| 225 lb-in | 25.422 N·m |
| 250 lb-in | 28.246 N·m |
| 300 lb-in | 33.895 N·m |
| 350 lb-in | 39.545 N·m |
| 400 lb-in | 45.194 N·m |
| 450 lb-in | 50.843 N·m |
| 500 lb-in | 56.492 N·m |
| 600 lb-in | 67.791 N·m |
| 700 lb-in | 79.089 N·m |
| 800 lb-in | 90.388 N·m |
| 900 lb-in | 101.69 N·m |
| 1000 lb-in | 112.98 N·m |
| 1200 lb-in | 135.58 N·m |
| 1500 lb-in | 169.48 N·m |
| 1800 lb-in | 203.37 N·m |
| 2000 lb-in | 225.97 N·m |
| 2500 lb-in | 282.46 N·m |
| 3000 lb-in | 338.95 N·m |
| 5000 lb-in | 564.92 N·m |
| 7500 lb-in | 847.39 N·m |
| 10000 lb-in | 1129.8 N·m |
| 15000 lb-in | 1694.8 N·m |
| 20000 lb-in | 2259.7 N·m |
| 25000 lb-in | 2824.6 N·m |
| 50000 lb-in | 5649.2 N·m |
| 75000 lb-in | 8473.9 N·m |
| 100000 lb-in | 11298 N·m |
| 200000 lb-in | 22597 N·m |
| 500000 lb-in | 56492 N·m |
Frequently asked questions
- How many newton-meters are in 1 pound-inch?
- 1 pound-inch equals 0.112985 newton-meters.
- How do I convert pound-inches to newton-meters?
- Multiply the pound-inch value by 0.112985. So x lb-in × 0.112985 = the equivalent in N·m.
- What is 5 pound-inches in newton-meters?
- 5 pound-inches equals 0.564924 newton-meters.
- What is 10 pound-inches in newton-meters?
- 10 pound-inches equals 1.12985 newton-meters.
- What is 100 pound-inches in newton-meters?
- 100 pound-inches equals 11.2985 newton-meters.
- How do I convert back from newton-meters to pound-inches?
- Multiply the newton-meter value by 8.85075. For example, 1 N·m = 8.85075 lb-in.
- Is the pound-inch bigger than the newton-meter?
- No. 1 pound-inch is smaller than 1 newton-meter. It takes 8.85075 pound-inches to equal 1 newton-meter.
- Are these conversion factors exact?
- The underlying imperial/US unit definitions are exact; the displayed factor (0.112985) is rounded for readability, and the browser computes using IEEE 754 double-precision arithmetic.
About the pound-inch and the newton-meter
The newton-meter
The newton-meter (N·m) is the SI derived unit of torque — the moment of force exerted by one newton applied at one meter of perpendicular distance. The metric standard for every modern engineering spec sheet.