Convert Joules per square metre to Poundals per inch
Convert Joules per square metre (J/m²) to Poundals per inch (pdl/in) instantly and accurately.
Conversion Formula
pdl/in = J/m² × 0.1837185518
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 Poundals per inch
The poundal per inch (pdl/in) equals 0.45359237 × 12 N/m = 5.44310844 N/m exactly (since 0.3048/0.0254 = 12). A foot-pound-second (FPS) unit rarely encountered in modern practice but found in historical US engineering tables predating SI adoption. 1 pdl/in = 5.44310844 N/m ≈ 5 443 mN/m.
Quick Reference Table
| Joules per square metre (J/m²) | Poundals per inch (pdl/in) |
|---|---|
| 1 J/m² | 0.183719 pdl/in |
| 2 J/m² | 0.367437 pdl/in |
| 5 J/m² | 0.918593 pdl/in |
| 10 J/m² | 1.83719 pdl/in |
| 25 J/m² | 4.59296 pdl/in |
| 50 J/m² | 9.18593 pdl/in |
| 100 J/m² | 18.3719 pdl/in |