Convert torque units — Newton-meter, pound-force foot, kilogram-force meter and more.
| Unit | Name | Value |
|---|---|---|
| N·m | Newton-meter | 1.35582 |
| kN·m | Kilonewton-meter | 0.00135582 |
| lbf·in | Pound-force Inch | 12 |
| kgf·m | Kilogram-force Meter | 0.13825516 |
| kgf·cm | Kilogram-force Centimeter | 13.825516 |
| dyn·cm | Dyne-centimeter | 13558200 |
Formula: Newton-meter = Pound-force Foot × 1.356
Multiply any Pound-force Foot value by 1.356 to get Newton-meter.
Reverse: Pound-force Foot = Newton-meter × 0.7376
Common torque values — factor: 1 lbf·ft = 1.356 N·m
| Pound-force Foot (lbf·ft) | Newton-meter (N·m) | Context |
|---|---|---|
| 0.001 lbf·ft | 0.001356 N·m | Tiny |
| 0.1 lbf·ft | 0.1356 N·m | Small mechanism |
| 1 lbf·ft | 1.356 N·m | 1 lbf·ft |
| 5 lbf·ft | 6.779 N·m | Small fastener |
| 10 lbf·ft | 13.56 N·m | Wheel spoke |
| 50 lbf·ft | 67.79 N·m | Bicycle wheel |
| 100 lbf·ft | 135.6 N·m | Small engine |
| 200 lbf·ft | 271.2 N·m | Compact car engine |
| 300 lbf·ft | 406.7 N·m | Mid-size car |
| 400 lbf·ft | 542.3 N·m | Performance car |
| 500 lbf·ft | 677.9 N·m | Large V8 |
| 650 lbf·ft | 881.3 N·m | Record truck torque |
| 1000 lbf·ft | 1356 N·m | 1,000 lbf·ft |
| 5000 lbf·ft | 6779 N·m | Industrial |
| 1e+04 lbf·ft | 1.356e+04 N·m | Heavy machinery |
lbf·ft × 1.356 = N·m. Round to × 1.36.
1 lbf·ft = 1.356 N·m. 100 lbf·ft = 135.6 N·m. 300 lbf·ft ≈ 407 N·m.
N·m × 0.7376 = lbf·ft.
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 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).
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 Foot 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·ft = 13.56 N·m. Reverse: 1 N·m = 0.7376 lbf·ft. Exact factor: 1 lbf·ft = 1.356 N·m.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.