Convert Poundals per inch to Millijoules per square metre
Convert Poundals per inch (pdl/in) to Millijoules per square metre (mJ/m²) instantly and accurately.
Conversion Formula
mJ/m² = pdl/in × 5443.10844
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.
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.
Quick Reference Table
| Poundals per inch (pdl/in) | Millijoules per square metre (mJ/m²) |
|---|---|
| 1 pdl/in | 5443.11 mJ/m² |
| 2 pdl/in | 10886.2 mJ/m² |
| 5 pdl/in | 27215.5 mJ/m² |
| 10 pdl/in | 54431.1 mJ/m² |
| 25 pdl/in | 136078 mJ/m² |
| 50 pdl/in | 272155 mJ/m² |
| 100 pdl/in | 544311 mJ/m² |