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Permeability

µDtoin²

Convert microdarcy (µD) to square inches (permeability) (in²).

Factor1 µD = 1.529734e-15 in²

Converter

µD

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

Result
1.52973e-15in²

Rendered to 6 significant figures.

Formula

Formula
in² = µD × 1.529734e-15

Multiply any value in microdarcy by 1.529734e-15 to obtain the value in square inches (permeability).

Worked example

Convert 1 µD to in².

  1. 01Start with 1 µD.
  2. 02Multiply by the conversion factor: 1 × 1.529734e-15 = 1.52973e-15 in².
Result1 µD = 1.52973e-15 in²

Conversion table

µDin²
11.5297e-15
23.0595e-15
57.6487e-15
101.5297e-14
203.0595e-14
507.6487e-14
1001.5297e-13
2003.0595e-13
5007.6487e-13
10001.5297e-12

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from µD to in²?
1 µD equals 1.529734e-15 in². To convert, multiply the value in microdarcy by 1.529734e-15.
How do I convert 1 µD to in²?
1 µD = 1.52973e-15 in². For any value, multiply by 1.529734e-15.
How do I convert in² back to µD?
Divide by the same factor — or equivalently, multiply by 6.537083e+14. So 1 in² = 6.53708e+14 µD.
When would I need to convert microdarcy to square inch (permeability)?
Permeability conversions between µD 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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