Convert Microdarcy to Millimetre squared
Convert Microdarcy (µD) to Millimetre squared (mm²) instantly and accurately.
Conversion Formula
mm² = µD × 9.869232667e-13
About Microdarcy
The microdarcy (µD) equals 10⁻⁶ D ≈ 9.869 × 10⁻¹⁹ m², used for tight gas sands, coalbed methane matrix, and low-permeability carbonates. North Sea tight sandstones: 0.01-1 µD; coalbed methane matrix: 1-100 µD; mudrock caprocks: 0.001-1 µD. 1 µD = 10⁻³ mD = 10³ nD.
About Millimetre squared
The millimetre squared (mm²) equals 10⁻⁶ m² ≈ 1.013 × 10⁹ D, representing extremely high permeabilities beyond the range of most geological materials. It appears in geotechnical research for open rock fractures, coarse gravel channel beds, and large-cell open-foam engineered materials. 1 mm² = 10⁶ µm² = 10⁻⁶ m².
Quick Reference Table
| Microdarcy (µD) | Millimetre squared (mm²) |
|---|---|
| 1 µD | 9.869 × 10-13 mm² |
| 2 µD | 1.974 × 10-12 mm² |
| 5 µD | 4.935 × 10-12 mm² |
| 10 µD | 9.869 × 10-12 mm² |
| 25 µD | 2.467 × 10-11 mm² |
| 50 µD | 4.935 × 10-11 mm² |
| 100 µD | 9.869 × 10-11 mm² |