Torque from one pound-force at one inch.
Pound-inches to Rontonewton meters Converter — lb in to rN m
Convert Pound-inch (lb in) to Rontonewton meter (rN m) using the exact conversion factor (1 pound-inch = 1.129848e+26 rontonewton meter). See the formula, worked examples, and conversion table.
Pound-inches to Rontonewton meters converter
Converter
Torque Converter
Convert newton meters, pound-feet, pound-inches, ounce-inches, and kilogram-force meters.
Context values
Some unit families need one extra value for a physically accurate result.
Rontonewton meter is 1e-27 newton meter units.
Result = input x 0.112984829 / 1e-27.
Torque uses the newton meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pound-inches to Rontonewton meters
Pound-inch and Rontonewton meter both measure torque, and the conversion is essential for anyone using a torque wrench specified in one unit against a bolt or engine spec given in the other. Specifically: Torque from one pound-force at one inch, and rontonewton meter is 1e-27 newton meter units.
Formula
rontonewton meters = pound-inches × 1.129848e+26
This factor comes from each unit's defined relationship to the category's base unit: 1 pound-inch equals 0.112984829028 base units, and 1 rontonewton meter equals 1e-27 base units, so dividing one by the other gives the direct pound-inch-to-rontonewton meter factor of 1.129848e+26.
Simple example
1 lb in × 1.129848e+26 = 1.129848e+26 rN m
1 pound-inch = 1.129848e+26 rontonewton meters.
Real-world example
10 lb in × 1.129848e+26 = 1.129848e+27 rN m
10 pound-inches = 1.129848e+27 rontonewton meters.
Conversion table
| Pound-inch (lb in) | Rontonewton meter (rN m) |
|---|---|
| 1 lb in | 1.129848e+26 rN m |
| 5 lb in | 5.649241e+26 rN m |
| 10 lb in | 1.129848e+27 rN m |
| 50 lb in | 5.649241e+27 rN m |
| 100 lb in | 1.129848e+28 rN m |
| 500 lb in | 5.649241e+28 rN m |
Reverse conversion: Rontonewton meter to Pound-inch
1.129848e+26 rN m × 8.850746e-27 = 0.9999997431 lb in
1.129848e+26 rontonewton meters = 0.9999997431 pound-inches.
pound-inches = rontonewton meters × 8.850746e-27
For a page dedicated to this direction, see Rontonewton meter to Pound-inch.
Understanding the Pound-inch (lb in)
Torque from one pound-force at one inch.
Understanding the Rontonewton meter (rN m)
Rontonewton meter is 1e-27 newton meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many rontonewton meters are in 1 pound-inch?
1 pound-inch equals 1.129848e+26 rontonewton meters, using the exact defined conversion factor rather than an estimate.
How do I convert pound-inch to rontonewton meter?
Multiply the pound-inch value by 1.129848e+26. The converter above does this instantly to whatever precision you set.
How do I convert rontonewton meter back to pound-inch?
Use the reverse factor: 1 rontonewton meter equals 8.850746e-27 pound-inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound-inch?
Pound-inch (lb in) is a unit of torque.
What is a rontonewton meter?
Rontonewton meter (rN m) is a unit of torque.
Is the pound-inch to rontonewton meter conversion exact?
Yes. Both pound-inch and rontonewton meter are defined by fixed standards rather than physical artifacts, so the factor of 1.129848e+26 used above is exact to as many digits as you choose to display.