Convert Millijoules per square metre to Joules per square metre
Convert Millijoules per square metre (mJ/m²) to Joules per square metre (J/m²) instantly and accurately.
Conversion Formula
J/m² = mJ/m² × 0.001
About Millijoules per square metre
The millijoule per square metre (mJ/m²) equals 10⁻³ N/m - the SI surface-energy-per-area form, numerically identical to mN/m and dyn/cm. The preferred notation in materials science for solid surface energy and work of adhesion: polypropylene ~30 mJ/m², epoxy ~45 mJ/m², steel ~2 000 mJ/m². 1 mJ/m² = 1 mN/m = 1 dyn/cm.
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.
Quick Reference Table
| Millijoules per square metre (mJ/m²) | Joules per square metre (J/m²) |
|---|---|
| 1 mJ/m² | 0.001 J/m² |
| 2 mJ/m² | 0.002 J/m² |
| 5 mJ/m² | 0.005 J/m² |
| 10 mJ/m² | 0.01 J/m² |
| 25 mJ/m² | 0.025 J/m² |
| 50 mJ/m² | 0.05 J/m² |
| 100 mJ/m² | 0.1 J/m² |