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Permeability

cm²tomD

Convert square centimetres (permeability) (cm²) to millidarcy (mD).

Factor1 cm² = 1.01325e+11 mD

Converter

cm²

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

Result
1.01325e+11mD

Rendered to 6 significant figures.

Formula

Formula
mD = cm² × 1.01325e+11

Multiply any value in square centimetres (permeability) by 1.01325e+11 to obtain the value in millidarcy.

Worked example

Convert 1 cm² to mD.

  1. 01Start with 1 cm².
  2. 02Multiply by the conversion factor: 1 × 1.01325e+11 = 1.01325e+11 mD.
Result1 cm² = 1.01325e+11 mD

Conversion table

cm²mD
11.0132e+11
22.0265e+11
55.0662e+11
101.0132e+12
202.0265e+12
505.0662e+12
1001.0132e+13
2002.0265e+13
5005.0662e+13
10001.0132e+14

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cm² to mD?
1 cm² equals 1.01325e+11 mD. To convert, multiply the value in square centimetres (permeability) by 1.01325e+11.
How do I convert 1 cm² to mD?
1 cm² = 1.01325e+11 mD. For any value, multiply by 1.01325e+11.
How do I convert mD back to cm²?
Divide by the same factor — or equivalently, multiply by 9.869233e-12. So 1 mD = 9.86923e-12 cm².
When would I need to convert square centimetre (permeability) to millidarcy?
Permeability conversions between cm² and mD 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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