Convert Millinewtons per metre to Pounds-force per foot
Convert Millinewtons per metre (mN/m) to Pounds-force per foot (lbf/ft) instantly and accurately.
Conversion Formula
lbf/ft = mN/m × 6.852176586e-5
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.
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.
Quick Reference Table
| Millinewtons per metre (mN/m) | Pounds-force per foot (lbf/ft) |
|---|---|
| 1 mN/m | 6.852 × 10-5 lbf/ft |
| 2 mN/m | 0.000137044 lbf/ft |
| 5 mN/m | 0.000342609 lbf/ft |
| 10 mN/m | 0.000685218 lbf/ft |
| 25 mN/m | 0.00171304 lbf/ft |
| 50 mN/m | 0.00342609 lbf/ft |
| 100 mN/m | 0.00685218 lbf/ft |