Convert Newton meters to Pound-inches
1 newton meter is 8.85 lbf·in. One newton meter is exactly 8.85074579133 pound-inches.
One newton meter is 8.8507458 pound-inches. To convert newton meters to pound-inches, multiply by 8.8507458; to go the other way, divide by 8.8507458 or multiply by 0.11298483. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Special Publication 811. The SI unit: one newton acting at one meter.
Factor checked against the defining standard · How we check
- Newton meters × 8.8507458
1 * 8.85074588.851 lbf·in
1 newton meter in every torque unit
| Unit | Value | Exact factor |
|---|---|---|
| pound-feet | 0.7375621493 lbf·ft | × 0.737562149277 |
| pound-inches | 8.850745791 lbf·in | × 8.85074579133 |
| newton meters (as entered) | 1 N·m | — |
| newton centimeters | 100 N·cm | × 100 |
| kilogram-force meters | 0.1019716213 kgf·m | × 0.101971621298 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: newton metres to pound-inches is the British spelling of the same units — the metre and the litre are spelled that way outside the United States and the quantity does not change.
How do you convert newton meters to pound-inches? The converter and the working
- 1.Take the measurement in newton meters.
- 2.Multiply by 8.8507458 — that is how many pound-inches fit in one newton meter.
- 3.To go back the other way, divide by 8.8507458, or multiply by 0.11298483.
Worked example: 25 newton meters to pound-inches
- Formula
- N·m × 8.8507458 = lbf·in
- Arithmetic
- 25 × 8.8507458 = 221.27 lbf·in
- Answer
- 25 N·m = 221.27 lbf·in
The factor is rounded for display; the figure above is computed from the full value.
Newton meters to pound-inches conversion table
| Newton meters | Pound-inches |
|---|---|
| 1 N·m | 8.85 lbf·in |
| 2 N·m | 17.7 lbf·in |
| 3 N·m | 26.55 lbf·in |
| 4 N·m | 35.4 lbf·in |
| 5 N·m | 44.25 lbf·in |
| 6 N·m | 53.1 lbf·in |
| 7 N·m | 61.96 lbf·in |
| 8 N·m | 70.81 lbf·in |
| 9 N·m | 79.66 lbf·in |
| 10 N·m | 88.51 lbf·in |
| 12 N·m | 106.21 lbf·in |
| 15 N·m | 132.76 lbf·in |
| 20 N·m | 177.01 lbf·in |
| 25 N·m | 221.27 lbf·in |
| 50 N·m | 442.54 lbf·in |
| 100 N·m | 885.07 lbf·in |
| 200 N·m | 1,770.15 lbf·in |
| 300 N·m | 2,655.22 lbf·in |
| 500 N·m | 4,425.37 lbf·in |
| 1000 N·m | 8,850.75 lbf·in |
| 2000 N·m | 17,701.49 lbf·in |
| 5000 N·m | 44,253.73 lbf·in |
| 10000 N·m | 88,507.46 lbf·in |
A pound-inch is a twelfth of a pound-foot
Small fasteners are specified in pound-inches — 1 lbf·in is 0.11298483 N·m — and a torque wrench set to 30 when the spec said 30 lbf·in will apply twelve times the intended torque if its scale is in pound-feet. This is a routine way to snap a bolt. Check the units printed on the wrench before the number.
NIST Special Publication 811 — Guide for the Use of the International System of Units
What is a newton meter?
The SI unit: one newton acting at one meter. Every metric service manual states torque in it.
What is a pound-inch?
One twelfth of a pound-foot. Small fasteners, spark plugs and bicycle components are specified here, which is why a spec of "80 in-lb" is not a misprinted 80 ft-lb.
How many pound-inches are in a newton meter?
One newton meter is 8.8507458 pound-inches. Going the other way, one pound-inch is 0.11298483 newton meters. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every torque unit here
The whole group — 5 units with their symbols and the size of each one in newton meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a newton meter.
Source: NIST Special Publication 811 — pound-force is exactly 4.4482216152605 N
Cite this page
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- Rule Calculator. (2026). Convert Newton meters to pound-inches. Rule Calculator. https://rulecalculators.com/convert/newton-meter-to-pound-inch
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- "Convert Newton meters to pound-inches." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/newton-meter-to-pound-inch.
- Chicago
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The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many pound-inches are in a newton meter?
- 8.8507458. One twelfth of a pound-foot. Small fasteners, spark plugs and bicycle components are specified here, which is why a spec of "80 in-lb" is not a misprinted 80 ft-lb.
- How do I convert pound-inches back to newton meters?
- Divide by 8.8507458, or multiply by 0.11298483 — they are the same operation.
Other torque conversions
Pound-inches to newton meters — the same conversion the other way.