▸ processconvert
Permeability

in²toµD

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

Factor1 in² = 6.537083e+14 µD

Converter

in²

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

Result
6.53708e+14µD

Rendered to 6 significant figures.

Formula

Formula
µD = in² × 6.537083e+14

Multiply any value in square inches (permeability) by 6.537083e+14 to obtain the value in microdarcy.

Worked example

Convert 1 in² to µD.

  1. 01Start with 1 in².
  2. 02Multiply by the conversion factor: 1 × 6.537083e+14 = 6.53708e+14 µD.
Result1 in² = 6.53708e+14 µD

Conversion table

in²µD
16.5371e+14
21.3074e+15
53.2685e+15
106.5371e+15
201.3074e+16
503.2685e+16
1006.5371e+16
2001.3074e+17
5003.2685e+17
10006.5371e+17

Reference values rounded to 5 significant figures for display.

FAQ

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

Related conversions