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Inch-Pounds to Newton-Metres Converter

Convert inch-pounds to newton-metres (Nm) and back. Inch-pounds are the customary unit for light torque; newton-metres are the metric one you will see on European specs.

Inch-Pounds ⇄ Newton-Metres
in-lb
=
Nm
Result50 in-lb = 5.649 Nm
Quick answer
One inch-pound is 0.112985 Nm, so multiply inch-pounds by 0.112985 to reach newton-metres. A 50 in-lb spec works out to about 5.65 Nm. To go the other way, multiply newton-metres by 8.851. This pairing comes up a lot when a small European part lists its torque in Nm but your driver is marked in inch-pounds.

Conversion table

Inch-pounds (in-lb)Newton-metres (Nm)
10 in-lb1.13
20 in-lb2.26
35 in-lb3.954
50 in-lb5.649
75 in-lb8.474
100 in-lb11.298
150 in-lb16.948
250 in-lb28.246

How to convert in-lb to Nm

Nm = in-lb × 0.112985reverse: in-lb = Nm × 8.851 · 12 in-lb = 1 ft-lb
in-lb
inch-pounds you enter
Nm
the result in newton-metres
0.112985
newton-metres in one inch-pound
8.851
inch-pounds in one newton-metre

Inch-pounds keep the number readable on light fasteners, where the newton-metre value drops below one. Torque to the maker figure; this only swaps the units.

Frequently asked questions

How many Nm is 50 in-lb?

50 inch-pounds is about 5.65 Nm.

How many inch-pounds is 2 Nm?

2 newton-metres is about 17.7 in-lb.

What is 100 in-lb in newton-metres?

100 inch-pounds is about 11.3 Nm.

Why would a spec use inch-pounds?

On small screws and trim the newton-metre figure is a fraction, so inch-pounds give a fuller number to read on the driver.

Is this different from Nm to inch-pounds?

No, it is the same conversion. Type into whichever field you have the value in and the other one fills.

Quick facts
1 inch-pound
0.112985 Nm
1 newton-metre
8.851 in-lb
12 in-lb
1 ft-lb
Measures
Torque