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Permeability

kDtoµm²

Convert kilodarcy (kD) to square micrometres (permeability) (µm²).

Factor1 kD = 986.9233 µm²

Converter

kD

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

Result
986.923µm²

Rendered to 6 significant figures.

Formula

Formula
µm² = kD × 986.9233

Multiply any value in kilodarcy by 986.9233 to obtain the value in square micrometres (permeability).

Worked example

Convert 1 kD to µm².

  1. 01Start with 1 kD.
  2. 02Multiply by the conversion factor: 1 × 986.9233 = 986.923 µm².
Result1 kD = 986.923 µm²

Conversion table

kDµm²
1986.92
21973.8
54934.6
109869.2
2019738
5049346
10098692
2001.9738e+5
5004.9346e+5
10009.8692e+5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kD to µm²?
1 kD equals 986.9233 µm². To convert, multiply the value in kilodarcy by 986.9233.
How do I convert 1 kD to µm²?
1 kD = 986.923 µm². For any value, multiply by 986.9233.
How do I convert µm² back to kD?
Divide by the same factor — or equivalently, multiply by 0.00101325. So 1 µm² = 0.00101325 kD.
When would I need to convert kilodarcy to square micrometre (permeability)?
Permeability conversions between kD and µm² 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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