Pound-inches to Newton-millimeters Converter
Enter the torque in pound-inches below to convert it to newton-millimeters.
Convert Pound-inches to Newton-millimeters
Enter a value in pound-inches (lb·in) to convert to newton-millimeters (N·mm).
Pound-inch to Newton-millimeter Conversion Table
Table showing various pound-inch measurements converted to newton-millimeters. Click any preset value or arrow to load it into the converter.
| Pound-inches (lb·in) | Newton-millimeters (N·mm) |
|---|---|
| 1 lb·in | 112.984829 N·mm |
| 2 lb·in | 225.9696581 N·mm |
| 2.5 lb·in | 282.4620726 N·mm |
| 5 lb·in | 564.9241451 N·mm |
| 10 lb·in | 1,129.8482903 N·mm |
| 15 lb·in | 1,694.7724354 N·mm |
| 20 lb·in | 2,259.6965806 N·mm |
| 25 lb·in | 2,824.6207257 N·mm |
| 30 lb·in | 3,389.5448708 N·mm |
| 50 lb·in | 5,649.2414514 N·mm |
How to Convert Pound-inches to Newton-millimeters
To convert pound-inches to newton-millimeters, multiply the torque by the following conversion ratio: 112.984829 newton-millimeters/pound-inch.
Since one pound-inch is equal to 112.984829 newton-millimeters, you can use this simple formula to convert:
The torque in newton-millimeters is equal to the torque in pound-inches multiplied by 112.984829.
For example, here's how to convert 5 pound-inches to newton-millimeters using the formula above.
How Many Newton-millimeters Are in a Pound-inch?
There are 112.984829 newton-millimeters in a pound-inch, which is why we use this value in the formula above.
Our pound-inch to newton-millimeter calculator automatically converts your torque measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Pound-inches and newton-millimeters are both units used to measure torque. Keep reading to learn more about each unit.
What Is a Pound-inch?
A pound-inch is a unit of torque equal to 0.1129848 newton-meters (N·m), the base unit for torque. 1/12 of a pound-foot (0.112985 N·m). [1]
The pound-inch is classified as a US customary and imperial unit of torque. Pound-inches can be abbreviated as lb·in; for example, 1 pound-inch can be written as 1 lb·in.
When working with pound-inches (lb·in) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, pound-inches (lb·in) are widely used across standard torque applications within US customary and imperial workflows, engineering documentation, and technical data sheets.
What Is a Newton-millimeter?
A newton-millimeter is a unit of torque equal to 1/1,000 of a newton-meter (0.001 N·m). Equal to 0.001 N·m. [2]
The newton-millimeter is classified as a metric and SI-compatible unit of torque. Newton-millimeters can be abbreviated as N·mm; for example, 1 newton-millimeter can be written as 1 N·mm.
When working with newton-millimeters (N·mm) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, newton-millimeters (N·mm) are widely used across fine-tolerance laboratory, analytical, and micro-scale torque measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting torque between pound-inches (lb·in) and newton-millimeters (N·mm), keep full floating-point precision (1 lb·in = 112.984829 N·mm; 1 N·mm = 0.0088507 lb·in) during intermediate calculations and round only the final newton-millimeter figure to match your instrument tolerance.
More Pound-inch & Newton-millimeter Conversions
Need to calculate in the opposite direction? Use our newton-millimeters to pound-inches calculator to switch your starting unit immediately. You can also explore related tools such as converting newton-millimeters to pound-inches, converting pound-inches to newton-meters, or converting pound-inches to pound-feet.
Convert from Pound-inches
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Moment of Force & Torque))·Torque Metrology Standard — Pound-inches (lb·in) to Newton-millimeters (N·mm)
- [2]NIST App. B.8 SpecificationNIST App. B.8 (NIST SP 811 Alphabetical Conversion Factors)·Unit Specifications: Pound-inch (in·lbf) (lb·in) & Newton-millimeter (N·mm)
- [3]BIPM ReferenceBIPM (Mechanics & Rotational Work (N·m))·Conversion Factors & Mathematical Basis (lb·in to N·mm)