Convert Newtons per metre to Poundals per inch
Convert Newtons per metre (N/m) to Poundals per inch (pdl/in) instantly and accurately.
Conversion Formula
pdl/in = N/m × 0.1837185518
About Newtons per metre
The newton per metre (N/m) is the SI derived unit of surface tension, equal to one joule per square metre. Adopted in all modern scientific publications and engineering codes. Water at 20 °C: 0.0728 N/m; mercury: 0.485 N/m; liquid iron at 1 550 °C: ~1.8 N/m. 1 N/m = 1 J/m² = 1 000 mN/m = 1 000 dyn/cm.
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
| Newtons per metre (N/m) | Poundals per inch (pdl/in) |
|---|---|
| 1 N/m | 0.183719 pdl/in |
| 2 N/m | 0.367437 pdl/in |
| 5 N/m | 0.918593 pdl/in |
| 10 N/m | 1.83719 pdl/in |
| 25 N/m | 4.59296 pdl/in |
| 50 N/m | 9.18593 pdl/in |
| 100 N/m | 18.3719 pdl/in |