Formula.newton-metres = pound-feet × 1.35582.
Relationship.1 lb·ft = 1.35582 N·m.
Worked example. 80 lb·ft = 108.47 N·m.
lb-ft to Nm Converter.
1 lb·ft = 1.35582 N·m, so 80 lb·ft = 108.47 N·m. Type any value below to convert lb-ft to Nm instantly.
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lb·ft
Copied ✓ N·m
Copied ✓ Reference Table
| N·m | lb·ft | lb·in | kgf·m | N·cm | oz·in |
|---|---|---|---|---|---|
| 0.1084654359 | 0.08 | 0.9600000002 | 0.0110603963 | 10.846544 | 15.36 |
| 1.084654 | 0.8 | 9.6 | 0.1106039635 | 108.465436 | 153.6 |
| 10.846544 | 8 | 96 | 1.10604 | 1084.6544 | 1536 |
| 108.465436 | 80 | 960 | 11.060396 | 10846.5436 | 15360 |
| 1084.6544 | 800 | 9600 | 110.603963 | 108465.4359 | 153600.0003 |
| 10846.5436 | 8000 | 96000 | 1106.0396 | 1084654.3586 | 1536000.0031 |
| 108465.4359 | 80000 | 960000.0002 | 11060.3963 | 10846543.5864 | 15360000.0306 |
How to convert lb-ft to Nm
lb-ft to Nm conversion table
| lb·ft | N·m |
|---|---|
| 5 | 6.77909 |
| 10 | 13.558179 |
| 15 | 20.337269 |
| 20 | 27.116359 |
| 25 | 33.895449 |
| 30 | 40.674538 |
| 35 | 47.453628 |
| 40 | 54.232718 |
| 45 | 61.011808 |
| 50 | 67.790897 |
| 60 | 81.349077 |
| 70 | 94.907256 |
| 75 | 101.686346 |
| 80 | 108.465436 |
| 90 | 122.023615 |
| 100 | 135.581795 |
| 110 | 149.139974 |
| 120 | 162.698154 |
| 130 | 176.256333 |
| 150 | 203.372692 |
| 175 | 237.268141 |
| 200 | 271.16359 |
| 250 | 338.954487 |
| 300 | 406.745384 |
| 400 | 542.327179 |
Frequently Asked Questions
How do I convert lb-ft to Nm?
Multiply pound-feet by 1.35582. For example, 80 lb·ft × 1.35582 ≈ 108.5 N·m.
How many Nm is 100 lb-ft?
100 × 1.35582 = 135.6 N·m. As a rough mental check, multiply pound-feet by 1.35 — that gets you within half a percent.
My torque wrench reads lb-ft but the manual says Nm — what do I do?
Convert the manual's figure before you set the wrench: divide N·m by 1.35582 to get lb·ft. Getting this backwards applies about 84% too much or too little torque, which is enough to shear a bolt or leave a joint loose.
How do I convert lb-ft to lb-in?
Multiply by 12, since a foot is 12 inches. So 5 lb·ft = 60 lb·in. Small fasteners and electronics are usually specified in lb·in or even ounce-inches.