Surface Tension / lbf/ft → mN/m
Convert Pounds-force per foot to Millinewtons per meter
Convert interfacial force per unit length. Convert Pounds-force per foot (lbf/ft) to Millinewtons per meter (mN/m). Find the formula, worked examples, unit definitions, and practical guidance below.
Reverse: Millinewtons per meter to Pounds-force per foot →
How to convert pounds-force per foot to millinewtons per meter
Surface tension depends on the interface, composition, and temperature. Force per length and surface energy per area have equivalent dimensions, but use the physical interpretation appropriate to your experiment.
Use x for the value in lbf/ft, b for the intermediate value in N/m, and y for the result in mN/m.
mN/m = lbf/ft × 14.593902937206362 ÷ 0.001
Worked examples
10 lbf/ft ≈ 145939.029372 mN/m
Step 1: (10 × 14.5939029372) ≈ 145.939029372 N/m.
Step 2: 145.939029372 ÷ 0.001 ≈ 145939.029372 mN/m.20 lbf/ft ≈ 291878.058744 mN/m
Step 1: (20 × 14.5939029372) ≈ 291.878058744 N/m.
Step 2: 291.878058744 ÷ 0.001 ≈ 291878.058744 mN/m.
Results are rounded to 12 significant digits. Converting units does not increase the precision of the original measurement. Very large or small values outside JavaScript’s finite numeric range are rejected.
About Pounds-force per foot
Pounds-force per foot (lbf/ft) measures surface tension under the conventions above. The base value in N/m is (x × 14.5939029372), where x is the numerical value in lbf/ft. Factors shown here are rounded for display; calculations use the stored factor.
About Millinewtons per meter
Millinewtons per meter (mN/m) measures surface tension under the conventions above. The base value in N/m is (x × 0.001), where x is the numerical value in mN/m. Factors shown here are rounded for display; calculations use the stored factor.
Definitions and sources
Carry the same physical assumptions into subsequent physics calculations.
Pounds-force per foot to millinewtons per meter reference table
| Pounds-force per foot (lbf/ft) | Millinewtons per meter (mN/m) |
|---|---|
| 1 | 14593.9029372 |
| 5 | 72969.514686 |
| 10 | 145939.029372 |
| 25 | 364847.57343 |
| 50 | 729695.14686 |
| 100 | 1459390.29372 |
| 1000 | 14593902.9372 |
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