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Permeability

in²tom²

Convert square inches (permeability) (in²) to square metres (permeability) (m²).

Factor1 in² = 0.00064516 m²

Converter

in²

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

Result
0.96774m²

Rendered to 6 significant figures.

Formula

Formula
m² = in² × 0.00064516

Multiply any value in square inches (permeability) by 0.00064516 to obtain the value in square metres (permeability).

Worked example

Convert 1500 in² to m².

  1. 01Start with 1500 in².
  2. 02Multiply by the conversion factor: 1500 × 0.00064516 = 0.96774 m².
Result1500 in² = 0.96774 m²

Conversion table

in²m²
10.00064516
20.0012903
50.0032258
100.0064516
200.012903
500.032258
1000.064516
2000.12903
5000.32258
10000.64516

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from in² to m²?
1 in² equals 0.00064516 m². To convert, multiply the value in square inches (permeability) by 0.00064516.
How do I convert 1 in² to m²?
1 in² = 0.00064516 m². For any value, multiply by 0.00064516.
How do I convert m² back to in²?
Divide by the same factor — or equivalently, multiply by 1550.003. So 1 m² = 1550 in².
When would I need to convert square inch (permeability) to square metre (permeability)?
Permeability conversions between in² 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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