Convert Ounces-force to Newtons
1 ounce-force (ozf) equals 0.278013851 newtons (N).
1 ozf = 0.278013851 N
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk ounce-force to newton converter to paste a column from Excel.
How to Convert Ounce-force to Newton
- 1 ozf = 0.278013851 N
- 1 N = 3.59694309 ozf
- Example: convert 15 ozf to N: 15 ozf = 15 × 0.278013851 N = 4.170207764 N
Formula
N = ozf × 0.2780138509538
or N = ozf ÷ 3.596943089595
Derivation from SI units:
- 1 ozf = 1/16 lbf = 0.27801385095378 N
- 1 N = 1 kg·m/s²
Both units are defined exactly, so the factor is exact. Ounce-force definition: ounce-force; Newton definition: newton.
Worked examples
- A reading of 4 ozf converts to 1.112055404 N.
4 ozf × 0.278013851 = 1.112055404 N - A value of 16 ozf is 4.448221615 N.
16 ozf × 0.278013851 = 4.448221615 N
Ounce-force to Newton conversion table
| Ounces-force (ozf) | Newtons (N) |
|---|---|
| 0.5 ozf | 0.1390069255 N |
| 1 ozf | 0.278013851 N |
| 2 ozf | 0.5560277019 N |
| 4 ozf | 1.112055404 N |
| 8 ozf | 2.224110808 N |
| 10 ozf | 2.78013851 N |
| 16 ozf | 4.448221615 N |
| 32 ozf | 8.896443231 N |
| 64 ozf | 17.79288646 N |
| 100 ozf | 27.8013851 N |
Where it's used
Ounces-force are used for small spring and switch forces, while newtons appear in engineering loads and reactions. Both measure force, so the conversion is a fixed factor.
Ounce-force to other force units
| Conversion | 1 ozf equals |
|---|---|
| ounce-force to newton | 0.278013851 N |
| ounce-force to kilonewton | 0.000278013851 kN |
| ounce-force to pound-force | 0.0625 lbf |
| ounce-force to kilogram-force | 0.02834952313 kgf |
| ounce-force to kip | 0.0000625 kip |
| ounce-force to dyne | 27801.3851 dyn |
| ounce-force to gram-force | 28.34952313 gf |
Frequently asked questions
How many newtons are in 1 ounce-force?
1 ozf = 0.278013851 N.
How do I convert ounces-force to newtons?
Multiply the value in ozf by 0.278013851, or divide it by 3.59694309. For example, 15 ozf × 0.278013851 = 4.170207764 N.
Is the ozf to N 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 (ozf)".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4, coherent derived units 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 Ounces-force to Newtons. Retrieved October 17, 2026, from https://scientificconverters.com/force/ounce-force-to-newtons/
IEEE
Scientific Converters, "Convert Ounces-force to Newtons," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/force/ounce-force-to-newtons/