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: Kilonewton-meter = Pound-force Inch × 0.000113
Multiply any Pound-force Inch value by 0.000113 to get Kilonewton-meter.
Reverse: Pound-force Inch = Kilonewton-meter × 8851
Common torque values — factor: 1 lbf·in = 0.000113 kN·m
| Pound-force Inch (lbf·in) | Kilonewton-meter (kN·m) | Context |
|---|---|---|
| 0.5 lbf·in | 5.649e-05 kN·m | Tiny electronics |
| 1 lbf·in | 0.000113 kN·m | Small electronics screw |
| 5 lbf·in | 0.0005649 kN·m | Electronics fastener |
| 10 lbf·in | 0.00113 kN·m | Precision instrument |
| 20 lbf·in | 0.00226 kN·m | Small assembly |
| 50 lbf·in | 0.005649 kN·m | Moderate assembly |
| 100 lbf·in | 0.0113 kN·m | Bicycle brake |
| 200 lbf·in | 0.0226 kN·m | Small motor |
| 500 lbf·in | 0.05649 kN·m | Small engine |
| 1000 lbf·in | 0.113 kN·m | Larger motor |
| 2000 lbf·in | 0.226 kN·m | Moderate engine |
| 5000 lbf·in | 0.5649 kN·m | Large motor |
| 1e+04 lbf·in | 1.13 kN·m | Industrial |
| 5e+04 lbf·in | 5.649 kN·m | Heavy industrial |
| 1e+05 lbf·in | 11.3 kN·m | Very heavy |
1 lbf·in = 0.000113 kN·m.
Use N·m as the bridge: convert lbf·in → N·m → kN·m.
Multiply result by 8851 to recover the original lbf·in value.
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 kilonewton-meter (kN·m) equals 1,000 N·m and is used for large-scale torque in structural engineering, heavy machinery, and civil infrastructure. Bridge bolts, crane slewing rings, and wind turbine gearboxes operate in the kN·m range.
Structural engineering uses kN·m for bending moments in beams, columns, and foundations. A typical car wheel bolt is torqued to about 0.1 kN·m; a large wind turbine main shaft may experience torques of 1,000–10,000 kN·m.
Interesting fact: The torque needed to loosen a rusted M24 bolt in civil construction can exceed 1 kN·m. The main rotor shaft of a 5 MW offshore wind turbine transmits over 4,000 kN·m of torque in high winds.
Converting Pound-force Inch to Kilonewton-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 = 0.00113 kN·m. Reverse: 1 kN·m = 8851 lbf·in. Exact factor: 1 lbf·in = 0.000113 kN·m.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.