Convert Joules per square metre to Millinewtons per metre
Convert Joules per square metre (J/m²) to Millinewtons per metre (mN/m) instantly and accurately.
Conversion Formula
mN/m = J/m² × 1000
About Joules per square metre
The joule per square metre (J/m²) equals 1 N/m exactly - the surface-fracture-energy (G_c) form used in fracture mechanics and wetting thermodynamics. Values: silica glass ~0.8 J/m²; aluminium ~1.4 J/m²; silicon carbide ~10-25 J/m²; tough metals 50-100 J/m². 1 J/m² = 1 N/m = 1 000 mJ/m².
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
| Joules per square metre (J/m²) | Millinewtons per metre (mN/m) |
|---|---|
| 1 J/m² | 1000 mN/m |
| 2 J/m² | 2000 mN/m |
| 5 J/m² | 5000 mN/m |
| 10 J/m² | 10000 mN/m |
| 25 J/m² | 25000 mN/m |
| 50 J/m² | 50000 mN/m |
| 100 J/m² | 100000 mN/m |