Torque from one pound-force at one inch.
Pound-inches to Piconewton meters Converter — lb in to pN m
Convert Pound-inch (lb in) to Piconewton meter (pN m) using the exact conversion factor (1 pound-inch = 112,984,829,000 piconewton meter). See the formula, worked examples, and conversion table.
Pound-inches to Piconewton meters converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Piconewton meter is 1e-12 newton meter units.
Result = input x 0.112984829 / 1e-12.
Torque units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Pound-inches to Piconewton meters
Pound-inch and Piconewton meter both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Torque from one pound-force at one inch, and piconewton meter is 1e-12 newton meter units.
Formula
piconewton meters = pound-inches × 112984829028
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 piconewton meter equals 1e-12 base units, so dividing one by the other gives the direct pound-inch-to-piconewton meter factor of 112984829028.
Simple example
1 lb in × 112984829000 = 112,984,829,000 pN m
1 pound-inch = 112,984,829,000 piconewton meters.
Real-world example
100 lb in × 112984829000 = 1.129848e+13 pN m
100 pound-inches = 1.129848e+13 piconewton meters.
Conversion table
| Pound-inch (lb in) | Piconewton meter (pN m) |
|---|---|
| 1 lb in | 112,984,829,000 pN m |
| 10 lb in | 1.129848e+12 pN m |
| 50 lb in | 5.649241e+12 pN m |
| 100 lb in | 1.129848e+13 pN m |
| 500 lb in | 5.649241e+13 pN m |
| 1,000 lb in | 1.129848e+14 pN m |
Reverse conversion: Piconewton meter to Pound-inch
1 pN m × 8.850746e-12 = 8.850746e-12 lb in
1 piconewton meter = 8.850746e-12 pound-inches.
pound-inches = piconewton meters × 8.850746e-12
For a page dedicated to this direction, see Piconewton meter to Pound-inch.
Understanding the Pound-inch (lb in)
Torque from one pound-force at one inch.
Understanding the Piconewton meter (pN m)
Piconewton meter is 1e-12 newton meter units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many piconewton meters are in 1 pound-inch?
1 pound-inch equals 112,984,829,000 piconewton meters, using the exact defined conversion factor rather than an estimate.
How do I convert pound-inch to piconewton meter?
Multiply the pound-inch value by 112984829000. The converter above does this instantly to whatever precision you set.
How do I convert piconewton meter back to pound-inch?
Use the reverse factor: 1 piconewton meter equals 8.850746e-12 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 engineering.
What is a piconewton meter?
Piconewton meter (pN m) is a unit of engineering.
Is the pound-inch to piconewton meter conversion exact?
Yes. Both pound-inch and piconewton meter are defined by fixed standards rather than physical artifacts, so the factor of 112984829000 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.