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Permeability

ft²tom²

Convert square feet (permeability) (ft²) to square metres (permeability) (m²).

Factor1 ft² = 0.09290304 m²

Converter

ft²

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

Result
0.92903m²

Rendered to 6 significant figures.

Formula

Formula
m² = ft² × 0.09290304

Multiply any value in square feet (permeability) by 0.09290304 to obtain the value in square metres (permeability).

Worked example

Convert 10 ft² to m².

  1. 01Start with 10 ft².
  2. 02Multiply by the conversion factor: 10 × 0.09290304 = 0.92903 m².
Result10 ft² = 0.92903 m²

Conversion table

ft²m²
10.092903
20.18581
50.46452
100.92903
201.8581
504.6452
1009.2903
20018.581
50046.452
100092.903

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ft² to m²?
1 ft² equals 0.09290304 m². To convert, multiply the value in square feet (permeability) by 0.09290304.
How do I convert 1 ft² to m²?
1 ft² = 0.092903 m². For any value, multiply by 0.09290304.
How do I convert m² back to ft²?
Divide by the same factor — or equivalently, multiply by 10.76391. So 1 m² = 10.7639 ft².
When would I need to convert square foot (permeability) to square metre (permeability)?
Permeability conversions between ft² and m² 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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