Convert torque units — Newton-meter, pound-force foot, kilogram-force meter and more.
| Unit | Name | Value |
|---|---|---|
| N·m | Newton-meter | 0.112985 |
| kN·m | Kilonewton-meter | 0.000112985 |
| lbf·ft | Pound-force Foot | 0.083333333 |
| kgf·m | Kilogram-force Meter | 0.011521264 |
| kgf·cm | Kilogram-force Centimeter | 1.1521264 |
| dyn·cm | Dyne-centimeter | 1129850 |
Formula: Newton-meter = Pound-force Inch × 0.113
Multiply any Pound-force Inch value by 0.113 to get Newton-meter.
Reverse: Pound-force Inch = Newton-meter × 8.851
Common torque values — factor: 1 lbf·in = 0.113 N·m
| Pound-force Inch (lbf·in) | Newton-meter (N·m) | Context |
|---|---|---|
| 0.5 lbf·in | 0.05649 N·m | Tiny electronics |
| 1 lbf·in | 0.113 N·m | Small electronics screw |
| 5 lbf·in | 0.5649 N·m | Electronics fastener |
| 10 lbf·in | 1.13 N·m | Precision instrument |
| 20 lbf·in | 2.26 N·m | Small assembly |
| 50 lbf·in | 5.649 N·m | Moderate assembly |
| 100 lbf·in | 11.3 N·m | Bicycle brake |
| 200 lbf·in | 22.6 N·m | Small motor |
| 500 lbf·in | 56.49 N·m | Small engine |
| 1000 lbf·in | 113 N·m | Larger motor |
| 2000 lbf·in | 226 N·m | Moderate engine |
| 5000 lbf·in | 564.9 N·m | Large motor |
| 1e+04 lbf·in | 1130 N·m | Industrial |
| 5e+04 lbf·in | 5649 N·m | Heavy industrial |
| 1e+05 lbf·in | 1.13e+04 N·m | Very heavy |
lbf·in × 0.113 = N·m.
12 lbf·in = 1 lbf·ft = 1.356 N·m.
N·m × 8.851 = lbf·in.
Specifies engine torque output, drivetrain components, and wheel bolt torque in N·m and lbf·ft.
Designs fastener assemblies with torque specifications to achieve required bolt preload.
Selects motors and servos based on torque ratings in N·m or kgf·cm for joint actuation.
Calculates bending moments in beams and frames — moment = torque in structural analysis.
Follows torque charts in lbf·in and lbf·ft for airframe and engine fasteners per maintenance manuals.
Applies correct torque to flanges, pipe fittings, and coupling bolts using calibrated torque wrenches.
Pound-force inch (lbf·in) equals 1/12 of lbf·ft (0.112985 N·m) and is used for small fasteners, electronics, precision instruments, and applications where lbf·ft would be impractically small.
lbf·in is standard for small fasteners in electronics manufacturing, firearms assembly, and precision instruments. Torque screwdrivers for electronics typically range from 0.5–20 lbf·in. Aircraft fastener specifications often use in·lbf.
Interesting fact: Overtorquing small electronics screws (which often need only 1–3 lbf·in) is a leading cause of cracked PCBs and stripped threads in consumer electronics assembly.
The newton-meter (N·m) is the SI unit of torque (and also of energy — though context distinguishes them). It equals the torque produced by a force of one newton applied at a perpendicular distance of one meter from the pivot point. It was formally adopted with the SI system in 1960.
N·m is the universal torque unit in engineering specifications worldwide. Engine torque, fastener torque specifications, structural bolt preloads, and industrial machinery torque ratings all use N·m in metric specifications.
Interesting fact: 1 N·m of torque equals 1 joule of energy — but they are conceptually different: torque is a rotational force (vector), energy is a scalar. The same unit is used because both involve force × distance, just in different geometric contexts.
Converting Pound-force Inch to Newton-meter is common across automotive, mechanical, robotics, and structural engineering. Metric countries use N·m and kN·m; the US uses lbf·ft and lbf·in; robotics uses kgf·cm. Accurate conversion is essential when working with international workshop manuals, equipment specs, and torque wrenches.
Quick reference: 10 lbf·in = 1.13 N·m. Reverse: 1 N·m = 8.851 lbf·in. Exact factor: 1 lbf·in = 0.113 N·m.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.