Newton Meters to Foot-Pounds (N·m to lb·ft)
One newton meter is 0.7376 pound-feet, so 100 N·m is 73.76 lb·ft and 50 N·m is 36.88 lb·ft. Inch-pounds are shown too, for small fasteners.
1 N·m =
0.7376 lb·ft
- Exact
- 0.7375621493 lb·ft
- pound-inches
- 8.851 lb·in
pound-feet = newton meters ÷ 1.3558179483314003
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How to convert Nm to ft-lbs
Multiply the newton meters by 0.7376:
lb·ft = N·m × 0.737562
100 N·m × 0.737562 = 73.76 lb·ft. A pound-foot is a pound-force (4.4482 newtons, from the pound and standard gravity) acting at one foot (0.3048 m), so 1 lb·ft = 1.35582 N·m exactly, and 1 N·m = 0.737562 lb·ft. The result also shows inch-pounds. To go the other way, multiply by 1.3558.
Nm to ft-lbs chart
| Newton meters (N·m) | Pound-feet (lb·ft) |
|---|---|
| 1 N·m | 0.7376 lb·ft |
| 5 N·m | 3.688 lb·ft |
| 10 N·m | 7.376 lb·ft |
| 20 N·m | 14.75 lb·ft |
| 25 N·m | 18.44 lb·ft |
| 30 N·m | 22.13 lb·ft |
| 40 N·m | 29.5 lb·ft |
| 50 N·m | 36.88 lb·ft |
| 75 N·m | 55.32 lb·ft |
| 100 N·m | 73.76 lb·ft |
| 120 N·m | 88.51 lb·ft |
| 150 N·m | 110.63 lb·ft |
| 200 N·m | 147.51 lb·ft |
| 300 N·m | 221.27 lb·ft |
| 500 N·m | 368.78 lb·ft |
Lug nuts, bikes and engines
| Use | N·m | lb·ft |
|---|---|---|
| Bicycle stem bolts (carbon) | 5 N·m | 3.7 lb·ft (44 lb·in) |
| Spark plug (typical) | 25 N·m | 18 lb·ft |
| Car lug nuts (many cars) | 110–140 N·m | 80–100 lb·ft |
| Truck lug nuts | 200 N·m | 148 lb·ft |
| Engine output (small car) | 200 N·m | 148 lb·ft |
Always use the torque in the vehicle’s or part’s manual; the table only shows the scale. European and Japanese manuals give N·m; U.S. torque wrenches often read lb·ft on the main scale and N·m on the second. Small fasteners — bike parts, electronics, valve covers — are specified in inch-pounds or small N·m values, where a few units matter.
Inch-pounds and foot-pounds
A foot-pound is 12 inch-pounds. A 5 N·m bolt is 3.69 lb·ft, but a wrench reading in lb·ft is too coarse there, so the result shows 44.25 lb·in as well. For converting between the two imperial units, see inch-pounds to foot-pounds.
Newtons and pounds of force
A newton is the force that accelerates one kilogram by one meter per second squared; a pound-force is the weight of one pound at standard gravity, 4.448 newtons. So a 1-kilogram weight hanging on a wrench 1 meter long gives 9.8 N·m, and the same 2.2 pounds on a 3.28-foot handle gives 7.2 lb·ft — the same torque. For the masses behind these forces, see kg to lbs.
Torque and horsepower
Engine specs list torque in lb·ft in the U.S. and N·m elsewhere, along with power in horsepower or kilowatts. Torque times engine speed gives power: in imperial units, horsepower = lb·ft × rpm ÷ 5,252. That is why a car with 148 lb·ft at 4,000 rpm makes about 113 hp at that speed. For the pressure figures in the same manuals, see bar to psi.