Surface Tension
lbf/intolbf/ft
Convert pounds-force per inch (surface tension) (lbf/in) to pounds-force per foot (surface tension) (lbf/ft).
Factor1 lbf/in = 12 lbf/ft
Converter
lbf/in
Accepts numbers or expressions, e.g. 150 + 14.7
Result
lbf/ft
Rendered to 6 significant figures.
Formula
Formula
lbf/ft = lbf/in × 12
Multiply any value in pounds-force per inch (surface tension) by 12 to obtain the value in pounds-force per foot (surface tension).
Worked example
Convert 1 lbf/in to lbf/ft.
- 01Start with 1 lbf/in.
- 02Multiply by the conversion factor: 1 × 12 = 12 lbf/ft.
Result1 lbf/in = 12 lbf/ft
Conversion table
| lbf/in | lbf/ft |
|---|---|
| 1 | 12 |
| 2 | 24 |
| 5 | 60 |
| 10 | 120 |
| 20 | 240 |
| 50 | 600 |
| 100 | 1200 |
| 200 | 2400 |
| 500 | 6000 |
| 1000 | 12000 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from lbf/in to lbf/ft?
1 lbf/in equals 12 lbf/ft. To convert, multiply the value in pounds-force per inch (surface tension) by 12.
How do I convert 1 lbf/in to lbf/ft?
1 lbf/in = 12 lbf/ft. For any value, multiply by 12.
How do I convert lbf/ft back to lbf/in?
Divide by the same factor — or equivalently, multiply by 0.08333333. So 1 lbf/ft = 0.0833333 lbf/in.
When would I need to convert pound-force per inch (surface tension) to pound-force per foot (surface tension)?
Surface-tension conversions between lbf/in and lbf/ft 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).
Related conversions
- lbf/ft → lbf/inpound-force per foot (surface tension) → pound-force per inch (surface tension)
- N/m → lbf/ftnewton per metre (surface tension) → pound-force per foot (surface tension)
- lbf/ft → N/mpound-force per foot (surface tension) → newton per metre (surface tension)
- N/m → lbf/innewton per metre (surface tension) → pound-force per inch (surface tension)
- lbf/in → N/mpound-force per inch (surface tension) → newton per metre (surface tension)
- mN/m → lbf/ftmillinewton per metre → pound-force per foot (surface tension)