Convert Ounce-inches to Newton-meters
1 ounce-inch (ozf·in) equals 0.007061551814 newton-meters (N·m).
1 ozf·in = 0.007061551814 N·m
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk ounce-inch to newton-meter converter to paste a column from Excel.
How to Convert Ounce-inch to Newton-meter
- 1 ozf·in = 0.007061551814 N·m
- 1 N·m = 141.6119327 ozf·in
- Example: convert 15 ozf·in to N·m: 15 ozf·in = 15 × 0.007061551814 N·m = 0.1059232772 N·m
Formula
N·m = ozf·in × 0.007061551814226
or N·m = ozf·in ÷ 141.6119326612
Derivation from SI units:
- 1 ozf·in = 1/16 lbf·in = 0.00706155181 N·m
- 1 N·m = 1 N × 1 m = 1 kg·m²·s⁻²
Both units are defined exactly, so the factor is exact. Ounce-inch definition: ounce-inch; Newton-meter definition: newton-meter.
Worked examples
- A stepper motor with 100 ozf·in of holding torque gives 0.7061551814 N·m.
100 ozf·in × 0.007061551814 = 0.7061551814 N·m - 50 ozf·in is 0.3530775907 N·m.
50 ozf·in × 0.007061551814 = 0.3530775907 N·m
Ounce-inch to Newton-meter conversion table
| Ounce-inches (ozf·in) | Newton-meters (N·m) |
|---|---|
| 1 ozf·in | 0.007061551814 N·m |
| 5 ozf·in | 0.03530775907 N·m |
| 10 ozf·in | 0.07061551814 N·m |
| 20 ozf·in | 0.1412310363 N·m |
| 50 ozf·in | 0.3530775907 N·m |
| 100 ozf·in | 0.7061551814 N·m |
| 200 ozf·in | 1.412310363 N·m |
| 500 ozf·in | 3.530775907 N·m |
Where it's used
Motor torques in oz-in, common on stepper and DC motor datasheets, are converted to N·m for drive sizing.
Ounce-inch to other torque units
| Conversion | 1 ozf·in equals |
|---|---|
| ounce-inch to newton-meter | 0.007061551814 N·m |
| ounce-inch to kilonewton-meter | 0.000007061551814 kN·m |
| ounce-inch to newton-centimeter | 0.7061551814 N·cm |
| ounce-inch to pound-foot | 0.005208333333 lbf·ft |
| ounce-inch to pound-inch | 0.0625 lbf·in |
| ounce-inch to kilogram-force meter | 0.0007200778874 kgf·m |
| ounce-inch to kilogram-force centimeter | 0.07200778874 kgf·cm |
| ounce-inch to dyne-centimeter | 70615.51814 dyn·cm |
Frequently asked questions
How many N·m is 1 oz-in?
1 ozf·in = 0.007061551814 N·m.
How many newton-meters are in 1 ounce-inch?
1 ozf·in = 0.007061551814 N·m.
How do I convert ounce-inches to newton-meters?
Multiply the value in ozf·in by 0.007061551814, or divide it by 141.6119327. For example, 15 ozf·in × 0.007061551814 = 0.1059232772 N·m.
Is the ozf·in to N·m conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "ounce (avoirdupois)-force inch".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 5, derived units expressed with special names.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Ounce-inches to Newton-meters. Retrieved October 17, 2026, from https://scientificconverters.com/torque/ounce-inches-to-newton-meters/
IEEE
Scientific Converters, "Convert Ounce-inches to Newton-meters," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/torque/ounce-inches-to-newton-meters/