Convert Poundals per inch to Millinewtons per metre
Convert Poundals per inch (pdl/in) to Millinewtons per metre (mN/m) instantly and accurately.
Conversion Formula
mN/m = 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 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
| Poundals per inch (pdl/in) | Millinewtons per metre (mN/m) |
|---|---|
| 1 pdl/in | 5443.11 mN/m |
| 2 pdl/in | 10886.2 mN/m |
| 5 pdl/in | 27215.5 mN/m |
| 10 pdl/in | 54431.1 mN/m |
| 25 pdl/in | 136078 mN/m |
| 50 pdl/in | 272155 mN/m |
| 100 pdl/in | 544311 mN/m |