N Newtons To Lbs
Dedicated converter

newtons to lb in

Inch-pound torque drivers dominate US electronics and instrument work, while specs arrive in newton-meters. This page converts N·m to lb·in exactly — the small-torque cousin of the ft·lb conversion.

The Converter

N·m → lb·in
N·m
lb·in
Precision
Quick values

Total Working

Formula T(lb·in) = T(N·m) × 8.8507457913
Substitute
Result
1 N·m = 8.8507457913 lb·in
Newton-meters (N·m) Pound-inches (lb·in)
1 8.8507
1.8 15.9313
2.2 19.4716
2.8 24.7821
5 44.2537
6 53.1045
8 70.806
10 88.5075
12 106.2089
15 132.7612

The exact factor

1 N·m = 8.8507457913 lb·in

Derived from the defined constants 1 lb = 0.45359237 kg and gₙ = 9.80665 m/s² — no measurement error, only display rounding.

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The N·m to lb·in factor

Multiply newton-meters by 8.8507457913. It's the ft·lb factor times twelve: 0.7375621 × 12 = 8.8507458, because an inch is a twelfth of a foot.

Example: a 2.2 N·m spec on a terminal screw = 2.2 × 8.85075 = 19.47 lb·in.

Small-torque territory

Electrical panel lugs (2–5 N·m → 18–44 lb·in), bicycle stems and seatposts (5–8 N·m → 44–71 lb·in), scope rings (1.8–2.8 N·m → 16–25 lb·in) — all live comfortably in inch-pounds where foot-pound values would be sub-10 fractions.

Many preset torque drivers are marked only in lb·in; converting the metric spec exactly avoids stacking rounding on top of tool tolerance.

Questions, answered

Frequently asked

How many lb·in is 5 N·m? +
5 × 8.8507458 = 44.25 lb·in.
When should I use lb·in instead of lb·ft? +
Below about 15 N·m (11 lb·ft), inch-pounds give more readable numbers and match small torque tools' scales.
What's the reverse conversion? +
lb·in × 0.1129848 = N·m. So 30 lb·in = 3.39 N·m.
The collection

Every converter

Dedicated pages for every force, torque, and pressure conversion — each with its own calculator, exact factor, and worked examples.

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