Convert Pounds-force per foot to Poundals per inch
Convert Pounds-force per foot (lbf/ft) to Poundals per inch (pdl/in) instantly and accurately.
Conversion Formula
pdl/in = lbf/ft × 2.681170713
About Pounds-force per foot
The pound-force per foot (lbf/ft) equals (0.45359237 × 9.80665) / 0.3048 ≈ 14.5939 N/m, used in US reservoir engineering and geotechnical drainage for capillary pressure and interfacial tension data. Drilling muds and reservoir simulation codes (Eclipse, CMG) sometimes report in lbf/ft. 1 lbf/ft ≈ 14.594 N/m ≈ 14 594 mN/m.
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
| Pounds-force per foot (lbf/ft) | Poundals per inch (pdl/in) |
|---|---|
| 1 lbf/ft | 2.68117 pdl/in |
| 2 lbf/ft | 5.36234 pdl/in |
| 5 lbf/ft | 13.4059 pdl/in |
| 10 lbf/ft | 26.8117 pdl/in |
| 25 lbf/ft | 67.0293 pdl/in |
| 50 lbf/ft | 134.059 pdl/in |
| 100 lbf/ft | 268.117 pdl/in |