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Permeability

cm²toD

Convert square centimetres (permeability) (cm²) to darcy (D).

Factor1 cm² = 1.01325e+8 D

Converter

cm²

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

Result
1.01325e+8D

Rendered to 6 significant figures.

Formula

Formula
D = cm² × 1.01325e+8

Multiply any value in square centimetres (permeability) by 1.01325e+8 to obtain the value in darcy.

Worked example

Convert 1 cm² to D.

  1. 01Start with 1 cm².
  2. 02Multiply by the conversion factor: 1 × 1.01325e+8 = 1.01325e+8 D.
Result1 cm² = 1.01325e+8 D

Conversion table

cm²D
11.0132e+8
22.0265e+8
55.0662e+8
101.0132e+9
202.0265e+9
505.0662e+9
1001.0132e+10
2002.0265e+10
5005.0662e+10
10001.0132e+11

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cm² to D?
1 cm² equals 1.01325e+8 D. To convert, multiply the value in square centimetres (permeability) by 1.01325e+8.
How do I convert 1 cm² to D?
1 cm² = 1.01325e+8 D. For any value, multiply by 1.01325e+8.
How do I convert D back to cm²?
Divide by the same factor — or equivalently, multiply by 9.869233e-9. So 1 D = 9.86923e-9 cm².
When would I need to convert square centimetre (permeability) to darcy?
Permeability conversions between cm² and D 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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