Convert Pound-force Inches to Newton Meters
Pound-force Inch (lbf·in) to Newton Meter (N·m) unit conversion — enter any value below to get an instant result, or use the table for common values.
Results from this calculator are estimates provided for general informational purposes only, based on formulas, rates, and standards commonly accepted as of 2026. Figures may differ slightly from other calculators or professional sources due to rounding methods, differing assumptions, or regional regulations, and rules may change over time. Always consult a qualified professional — such as a financial advisor, healthcare provider, or other relevant specialist — before making decisions based on these results.
Result
1 lbf·in = 0.11298483 N·m
1 Pound-force Inch = 0.11298483 Newton Meters
1 Newton Meter = 8.8507458 Pound-force Inches
1 lbf·in in every supported unit
Conversion chart: Pound-force Inch to Newton Meters
Conversion table
| Pound-force Inch (lbf·in) | Newton Meter (N·m) |
|---|---|
| 0.01 lbf·in | 0.0011298483 N·m |
| 0.1 lbf·in | 0.011298483 N·m |
| 1 lbf·in | 0.11298483 N·m |
| 2 lbf·in | 0.22596966 N·m |
| 3 lbf·in | 0.33895449 N·m |
| 5 lbf·in | 0.56492414 N·m |
| 10 lbf·in | 1.1298483 N·m |
| 20 lbf·in | 2.2596966 N·m |
| 50 lbf·in | 5.6492414 N·m |
| 100 lbf·in | 11.298483 N·m |
| 1000 lbf·in | 112.98483 N·m |
Pound-force Inch (lbf·in)
Definition: A finer US customary torque unit equal to the twisting effect of a 1-pound-force applied at a 1-inch radius, used for smaller fasteners than pound-force foot comfortably describes.
History: Derived from pound-force foot via the standard 12-inches-per-foot relationship, adopted for small-fastener torque specifications where foot-scale units would be imprecise.
Current use: The standard unit for small bolt and screw torque specifications in US automotive, electronics, and appliance assembly, commonly seen on inch-pound torque screwdrivers and small torque wrenches.
Newton Meter (N·m)
Definition: The SI derived unit of torque, equal to the rotational "twisting" effect produced by a 1-newton force applied at a 1-meter radius from the axis of rotation.
History: Formed from the SI newton and meter, becoming the standard torque unit once the newton was adopted internationally in 1948 — the same underlying unit as bending moment, but conventionally labeled "torque" when describing rotation about an axis, such as engine crankshafts, motor shafts, and fasteners, rather than beam bending.
Current use: The standard unit for engine torque ratings, electric motor specifications, and torque wrench markings in every country using the metric system, and increasingly common on US automotive spec sheets alongside pound-force feet.
Supported Units
| Unit | Symbol | In Newton Meters |
|---|---|---|
| Newton Meter | N·m | 1 N·m |
| Newton Centimeter | N·cm | 0.01 N·m |
| Kilonewton Meter | kN·m | 1000 N·m |
| Kilogram-force Meter | kgf·m | 9.80665 N·m |
| Kilogram-force Centimeter | kgf·cm | 0.0980665 N·m |
| Gram-force Meter | gf·m | 0.00980665 N·m |
| Pound-force Foot | lbf·ft | 1.3558179 N·m |
| Pound-force Inch | lbf·in | 0.11298483 N·m |
| Ounce-force Inch | ozf·in | 0.0070615518 N·m |
| Poundal Foot | pdl·ft | 0.04214011 N·m |
About These Parameters
- Value
- The number you want to convert, expressed in the "From" unit. Accepts decimals.
- From Unit
- The torque unit your input value is currently measured in.
- To Unit
- The torque unit you want the result converted into. Use the swap button to flip From and To instantly.
How Torque Conversion Works
The Formula
Every unit here is defined by a fixed multiplier relative to the newton meter. To convert a value from one unit to another:
result = value × (factor of "From" unit ÷ factor of "To" unit)
For Pound-force Inch → Newton Meter: multiply by 0.11298483. For example, 1 lbf·in × 0.11298483 = 0.11298483 N·m.
Engine Torque and Horsepower
Engine torque is the twisting force a crankshaft delivers at a given moment, and it's what actually gets a vehicle moving from a stop — horsepower, by contrast, is torque multiplied by engine speed (rpm), so a high-torque engine can feel much stronger off the line even with a modest horsepower rating. Torque wrenches use these same units to tighten fasteners to a manufacturer-specified value: too little torque and a bolt can loosen under vibration, too much and it can strip threads, stretch the fastener past its yield point, or crack the material it's threaded into.
Torque vs. Moment of Force: Same Physics, Different Context
Torque and moment of force share the exact same units and formula (force × radius or lever-arm distance), but engineering convention reserves "torque" for twisting effects on rotating shafts, engines, motors, and fasteners, while "moment" describes bending effects in stationary structures like beams and columns. There's no physical difference between a "50 N·m torque" and a "50 N·m moment"; the distinction is purely about which kind of problem — a spinning drivetrain versus a static beam — an engineer is solving, which is why this site offers a separate Moment of Force Converter for the structural use case.
Example
1 lbf·in equals 0.11298483 N·m. For scale, a mid-size sedan's engine might produce around 300 N·m of peak torque — roughly 2655.2237 lbf·in — while a typical lug nut on a passenger car is torqued to about 100-140 N·m with a torque wrench during a tire change.
Frequently Asked Questions
How many Newton Meters are in 1 Pound-force Inch?
1 Pound-force Inch (lbf·in) equals exactly 0.11298483 Newton Meters (N·m).
What's the difference between torque and horsepower?
Torque is the twisting force an engine or motor produces at a given instant; horsepower is torque multiplied by rotational speed (rpm), representing the rate at which work is done. An engine can have high torque at low rpm (good for towing and acceleration off the line) without necessarily having high peak horsepower, which depends on how well torque is sustained across the rev range.
Why do torque wrench specifications sometimes use kgf·cm or lbf·in instead of N·m?
Torque specifications scale with fastener size: large bolts (engine mounts, lug nuts) are naturally reported in newton meters or pound-force feet, while small fasteners (electronics, small appliances, camera mounts) need finer-grained units like newton centimeters, kilogram-force centimeters, or pound-force/ounce-force inches to avoid awkward decimals.
How accurate are these conversions?
Every conversion factor used here is the exact, internationally recognized value (e.g. 1 lbf·ft = exactly 1.3558179483314 N·m, derived from the internationally standardized pound, foot, and standard gravity) — results are limited only by floating-point display precision, not by rounded conversion constants.