Convert Pounds-force per foot to Newtons per metre
Convert Pounds-force per foot (lbf/ft) to Newtons per metre (N/m) instantly and accurately.
Conversion Formula
N/m = lbf/ft × 14.59390294
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 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.
Quick Reference Table
| Pounds-force per foot (lbf/ft) | Newtons per metre (N/m) |
|---|---|
| 1 lbf/ft | 14.5939 N/m |
| 2 lbf/ft | 29.1878 N/m |
| 5 lbf/ft | 72.9695 N/m |
| 10 lbf/ft | 145.939 N/m |
| 25 lbf/ft | 364.848 N/m |
| 50 lbf/ft | 729.695 N/m |
| 100 lbf/ft | 1459.39 N/m |