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Permeability

cm²toin²

Convert square centimetres (permeability) (cm²) to square inches (permeability) (in²).

Factor1 cm² = 0.1550003 in²

Converter

cm²

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

Result
0.930002in²

Rendered to 6 significant figures.

Formula

Formula
in² = cm² × 0.1550003

Multiply any value in square centimetres (permeability) by 0.1550003 to obtain the value in square inches (permeability).

Worked example

Convert 6 cm² to in².

  1. 01Start with 6 cm².
  2. 02Multiply by the conversion factor: 6 × 0.1550003 = 0.930002 in².
Result6 cm² = 0.930002 in²

Conversion table

cm²in²
10.155
20.31
50.775
101.55
203.1
507.75
10015.5
20031
50077.5
1000155

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cm² to in²?
1 cm² equals 0.1550003 in². To convert, multiply the value in square centimetres (permeability) by 0.1550003.
How do I convert 1 cm² to in²?
1 cm² = 0.155 in². For any value, multiply by 0.1550003.
How do I convert in² back to cm²?
Divide by the same factor — or equivalently, multiply by 6.4516. So 1 in² = 6.4516 cm².
When would I need to convert square centimetre (permeability) to square inch (permeability)?
Permeability conversions between cm² and in² appear in petroleum and reservoir engineering, hydrogeology, geotechnical engineering, packed-bed filtration and porous-materials research. The darcy (D) and its sub-multiples (mD, µD, nD) dominate petroleum-engineering documentation; SI area-equivalent units (m², µm², mm², cm², ft²) appear in geophysics and porous-media research. Intrinsic permeability is a property of the porous medium alone — this category does NOT include hydraulic conductivity (m/s, requires fluid density and viscosity), gas permeability (Klinkenberg slip corrections) or membrane-permeability coefficients, all of which are different physical quantities and require explicit assumptions.
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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