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: Pound-force Foot = Pound-force Inch × 0.08333
Multiply any Pound-force Inch value by 0.08333 to get Pound-force Foot.
Reverse: Pound-force Inch = Pound-force Foot × 12
Common torque values — factor: 1 lbf·in = 0.08333 lbf·ft
| Pound-force Inch (lbf·in) | Pound-force Foot (lbf·ft) | Context |
|---|---|---|
| 0.5 lbf·in | 0.04167 lbf·ft | Tiny electronics |
| 1 lbf·in | 0.08333 lbf·ft | Small electronics screw |
| 5 lbf·in | 0.4167 lbf·ft | Electronics fastener |
| 10 lbf·in | 0.8333 lbf·ft | Precision instrument |
| 20 lbf·in | 1.667 lbf·ft | Small assembly |
| 50 lbf·in | 4.167 lbf·ft | Moderate assembly |
| 100 lbf·in | 8.333 lbf·ft | Bicycle brake |
| 200 lbf·in | 16.67 lbf·ft | Small motor |
| 500 lbf·in | 41.67 lbf·ft | Small engine |
| 1000 lbf·in | 83.33 lbf·ft | Larger motor |
| 2000 lbf·in | 166.7 lbf·ft | Moderate engine |
| 5000 lbf·in | 416.7 lbf·ft | Large motor |
| 1e+04 lbf·in | 833.3 lbf·ft | Industrial |
| 5e+04 lbf·in | 4167 lbf·ft | Heavy industrial |
| 1e+05 lbf·in | 8333 lbf·ft | Very heavy |
lbf·in ÷ 12 = lbf·ft. Exact.
12 lbf·in = 1 lbf·ft.
lbf·ft × 12 = 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.
Pound-force foot (lbf·ft) is the standard Imperial torque unit in the United States, defined as the torque from a one pound-force applied one foot from the pivot. One lbf·ft = 1.35582 N·m.
lbf·ft dominates US automotive engineering: engine torque curves, wheel bolt torque specs, driveshaft specifications, and transmission ratings. A typical passenger car engine produces 150–300 lbf·ft; performance trucks can exceed 1,000 lbf·ft.
Interesting fact: The world's highest production-car torque record is held by the Dodge Ram TRX at 650 lbf·ft (881 N·m). Electric motors can deliver maximum torque instantly — Tesla Model S Plaid produces 1,020 lbf·ft (1,383 N·m).
Converting Pound-force Inch to Pound-force Foot 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 = 0.8333 lbf·ft. Reverse: 1 lbf·ft = 12 lbf·in. Exact factor: 1 lbf·in = 0.08333 lbf·ft.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.