Car wheel nuts, cylinder heads and suspension bolts are specified in N·m in most manuals and in ft-lb in U.S. ones. One N·m is about 0.7376 ft-lb.
How to use the Nm to ft-lb Converter
- Type the number of newton-metres into the Newton-metres field. Decimals such as 50 are fine.
- Read the answer in Pound-feet – it updates as you type, with no button to press.
- To convert the other way, type into Pound-feet and the newton-metres are recalculated.
- Press Copy results to copy both values with the page title, or Copy link to share this exact conversion.
This page converts only N·m ⇄ lbf·ft. Need a different unit? Use the general torque converter, where you can choose any “from” and “to” unit.
How it works
Both units measure torque, so they are always in the same ratio: one newton-metre equals 0.73756215 pound-feet. The calculator multiplies the number of newton-metres you type by 0.73756215 to give pound-feet, and when you type into the pound-feet field it divides by the same factor to give newton-metres. Because the ratio never changes, doubling the newton-metres always doubles the pound-feet. Results are calculated at full precision and rounded only for display (up to eight decimal places, with very large or small values shown in scientific notation).
How to convert newton-metres to pound-feet
- Write down the value in newton-metres, for example 100 N·m.
- Multiply by the conversion factor 0.73756215 (because 1 newton-metre = 0.73756215 lbf·ft).
- 100 × 0.73756215 = 73.756215 lbf·ft.
- To go back from pound-feet to newton-metres, divide by 0.73756215 – or multiply by 1.3558179.
N·m to lbf·ft conversion table
| Newton-metres | Pound-feet | Pound-feet | Newton-metres |
|---|---|---|---|
| 5 N·m | 3.6878107 lbf·ft | 1 lbf·ft | 1.3558179 N·m |
| 10 N·m | 7.3756215 lbf·ft | 2 lbf·ft | 2.7116359 N·m |
| 20 N·m | 14.751243 lbf·ft | 5 lbf·ft | 6.7790897 N·m |
| 40 N·m | 29.502486 lbf·ft | 10 lbf·ft | 13.558179 N·m |
| 50 N·m | 36.878107 lbf·ft | 20 lbf·ft | 27.116359 N·m |
| 80 N·m | 59.004972 lbf·ft | 50 lbf·ft | 67.790897 N·m |
| 100 N·m | 73.756215 lbf·ft | 100 lbf·ft | 135.58179 N·m |
| 110 N·m | 81.131836 lbf·ft | 1,000 lbf·ft | 1,355.8179 N·m |
| 120 N·m | 88.507458 lbf·ft | ||
| 200 N·m | 147.51243 lbf·ft | ||
| 300 N·m | 221.26864 lbf·ft | ||
| 500 N·m | 368.78107 lbf·ft |
What is a newton-metre?
The newton-metre is the SI unit of torque: a force of one newton at a lever arm of one metre. Car and bicycle torque specifications use N·m.
What is a pound-foot?
The pound-foot (often written ft-lb) is the U.S. unit of torque, about 1.356 N·m. Wheel-nut and engine torque in U.S. manuals use it.
Quick mental conversion
For a fast estimate, multiply newton-metres by about 0.74 to get pound-feet; the error is about 0.3%. Use the calculator above when you need the exact figure.
Common mistakes to avoid
Confusing ft-lb with in-lb (a factor of 12), and treating torque in n·m as energy in joules.
Formula
1 N·m = 0.73756215 lbf·ft1 lbf·ft = 1.3558179 N·mlbf·ft = N·m × 0.73756215Worked example
Inputs — Newton-metres: 100 N·m.
Results — Pound-feet = 73.75621493 lbf·ft.
Frequently asked questions
How many ft-lb is 120 N·m?
About 88.5 ft-lb.
How many N·m in a ft-lb?
About 1.356.
How many pound-feet are in one newton-metre?
1 N·m = 0.73756215 lbf·ft.
How many newton-metres are in one pound-foot?
1 lbf·ft = 1.3558179 N·m.
How do I convert newton-metres to pound-feet?
Multiply the number of newton-metres by 0.73756215. For example, 100 N·m × 0.73756215 = 73.756215 lbf·ft.
How do I convert pound-feet back to newton-metres?
Divide by 0.73756215 (or multiply by 1.3558179), or simply type the value into the pound-feet field above.
What is 10 N·m in pound-feet?
10 N·m = 7.3756215 lbf·ft.
What is 5 N·m in pound-feet?
5 N·m = 3.6878107 lbf·ft.
Is this conversion exact?
Yes. The factor comes from the official definitions of both units (NIST and the SI), so the only difference you may see is rounding in the last displayed digit.
Can I convert to other units on this page?
This page converts only between newton-metres and pound-feet. To pick any torque unit, use the general torque converter linked under Related calculators.
What formula does the Nm to ft-lb Converter use?
1 N·m = 0.73756215 lbf·ft.