Nm to in-lbs Converter

One newton-metre is about 8.85 inch-pounds. Bicycle stems, scope rings and electrical lugs often specify a few N·m, which is easier to set on an in-lb wrench.

How to use the Nm to in-lbs Converter

1. Type the number of newton-metres into the Newton-metres field. Decimals such as 2.5 are fine.
2. Read the answer in Pound-inches – it updates as you type, with no button to press.
3. To convert the other way, type into Pound-inches and the newton-metres are recalculated.
4. 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·in. 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 8.8507458 pound-inches. The calculator multiplies the number of newton-metres you type by 8.8507458 to give pound-inches, and when you type into the pound-inches field it divides by the same factor to give newton-metres. Because the ratio never changes, doubling the newton-metres always doubles the pound-inches. 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-inches

1. Write down the value in newton-metres, for example 5 N·m.
2. Multiply by the conversion factor 8.8507458 (because 1 newton-metre = 8.8507458 lbf·in).
3. 5 × 8.8507458 = 44.253729 lbf·in.
4. To go back from pound-inches to newton-metres, divide by 8.8507458 – or multiply by 0.11298483.

N·m to lbf·in conversion table

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-inch?

The pound-inch (in-lb) is 1/12 of a pound-foot, about 0.113 N·m, used for small fasteners and electrical terminals.

Quick mental conversion

For a fast estimate, multiply newton-metres by about 8.9 to get pound-inches; the error is about 0.6%. 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.