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Surface Tension

lbf/fttolbf/in

Convert pounds-force per foot (surface tension) (lbf/ft) to pounds-force per inch (surface tension) (lbf/in).

Factor1 lbf/ft = 0.08333333 lbf/in

Converter

lbf/ft

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1lbf/in

Rendered to 6 significant figures.

Formula

Formula
lbf/in = lbf/ft × 0.08333333

Multiply any value in pounds-force per foot (surface tension) by 0.08333333 to obtain the value in pounds-force per inch (surface tension).

Worked example

Convert 12 lbf/ft to lbf/in.

  1. 01Start with 12 lbf/ft.
  2. 02Multiply by the conversion factor: 12 × 0.08333333 = 1 lbf/in.
Result12 lbf/ft = 1 lbf/in

Conversion table

lbf/ftlbf/in
10.083333
20.16667
50.41667
100.83333
201.6667
504.1667
1008.3333
20016.667
50041.667
100083.333

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lbf/ft to lbf/in?
1 lbf/ft equals 0.08333333 lbf/in. To convert, multiply the value in pounds-force per foot (surface tension) by 0.08333333.
How do I convert 1 lbf/ft to lbf/in?
1 lbf/ft = 0.0833333 lbf/in. For any value, multiply by 0.08333333.
How do I convert lbf/in back to lbf/ft?
Divide by the same factor — or equivalently, multiply by 12. So 1 lbf/in = 12 lbf/ft.
When would I need to convert pound-force per foot (surface tension) to pound-force per inch (surface tension)?
Surface-tension conversions between lbf/ft and lbf/in appear in coatings and wettability work, surfactant and interfacial-tension measurement, foam and emulsion characterisation, and capillary/droplet-engineering datasheets. mN/m, dyn/cm and mJ/m² are exact numerical equivalents — they appear interchangeably across SI, CGS and surface-free-energy notations. lbf/ft and lbf/in are common in US petroleum interfacial-tension datasheets and US coatings documentation. This category does not include temperature-dependent material lookups or capillary/contact-angle calculators.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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