▸ processconvert
Permeability

kDtoft²

Convert kilodarcy (kD) to square feet (permeability) (ft²).

Factor1 kD = 1.062315e-8 ft²

Converter

kD

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

Result
1.06232e-8ft²

Rendered to 6 significant figures.

Formula

Formula
ft² = kD × 1.062315e-8

Multiply any value in kilodarcy by 1.062315e-8 to obtain the value in square feet (permeability).

Worked example

Convert 1 kD to ft².

  1. 01Start with 1 kD.
  2. 02Multiply by the conversion factor: 1 × 1.062315e-8 = 1.06232e-8 ft².
Result1 kD = 1.06232e-8 ft²

Conversion table

kDft²
11.0623e-8
22.1246e-8
55.3116e-8
101.0623e-7
202.1246e-7
505.3116e-7
1001.0623e-6
2002.1246e-6
5005.3116e-6
10001.0623e-5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kD to ft²?
1 kD equals 1.062315e-8 ft². To convert, multiply the value in kilodarcy by 1.062315e-8.
How do I convert 1 kD to ft²?
1 kD = 1.06232e-8 ft². For any value, multiply by 1.062315e-8.
How do I convert ft² back to kD?
Divide by the same factor — or equivalently, multiply by 9.4134e+7. So 1 ft² = 9.4134e+7 kD.
When would I need to convert kilodarcy to square foot (permeability)?
Permeability conversions between kD and ft² 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