Convert Micronewtons per metre to Millinewtons per metre
Convert Micronewtons per metre (µN/m) to Millinewtons per metre (mN/m) instantly and accurately.
Conversion Formula
mN/m = µN/m × 0.001
About Micronewtons per metre
The micronewton per metre (µN/m) equals 10⁻⁶ N/m, used in precision thin-film capillarity studies and cryogenic surface-tension measurements. Liquid helium-4 at 2 K has a surface tension of ~0.37 mN/m (370 µN/m); liquid ³He near absolute zero is even lower. Numerically identical to µJ/m². 1 µN/m = 10⁻³ mN/m.
About Millinewtons per metre
The millinewton per metre (mN/m) equals 10⁻³ N/m, the most widely used practical unit for liquid surface tension worldwide. Water at 20 °C: 72.8 mN/m; ethanol: 22.1 mN/m; mercury: 485 mN/m; olive oil: ~32 mN/m. Numerically identical to dyn/cm, erg/cm² and mJ/m². 1 mN/m = 10⁻³ N/m.
Quick Reference Table
| Micronewtons per metre (µN/m) | Millinewtons per metre (mN/m) |
|---|---|
| 1 µN/m | 0.001 mN/m |
| 2 µN/m | 0.002 mN/m |
| 5 µN/m | 0.005 mN/m |
| 10 µN/m | 0.01 mN/m |
| 25 µN/m | 0.025 mN/m |
| 50 µN/m | 0.05 mN/m |
| 100 µN/m | 0.1 mN/m |