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Permeability

cm²toft²

Convert square centimetres (permeability) (cm²) to square feet (permeability) (ft²).

Factor1 cm² = 0.001076391 ft²

Converter

cm²

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

Result
1.07639ft²

Rendered to 6 significant figures.

Formula

Formula
ft² = cm² × 0.001076391

Multiply any value in square centimetres (permeability) by 0.001076391 to obtain the value in square feet (permeability).

Worked example

Convert 1000 cm² to ft².

  1. 01Start with 1000 cm².
  2. 02Multiply by the conversion factor: 1000 × 0.001076391 = 1.07639 ft².
Result1000 cm² = 1.07639 ft²

Conversion table

cm²ft²
10.0010764
20.0021528
50.005382
100.010764
200.021528
500.05382
1000.10764
2000.21528
5000.5382
10001.0764

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cm² to ft²?
1 cm² equals 0.001076391 ft². To convert, multiply the value in square centimetres (permeability) by 0.001076391.
How do I convert 1 cm² to ft²?
1 cm² = 0.00107639 ft². For any value, multiply by 0.001076391.
How do I convert ft² back to cm²?
Divide by the same factor — or equivalently, multiply by 929.0304. So 1 ft² = 929.03 cm².
When would I need to convert square centimetre (permeability) to square foot (permeability)?
Permeability conversions between cm² and ft² 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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