Convert Millimetre squared to Kilodarcy
Convert Millimetre squared (mm²) to Kilodarcy (kD) instantly and accurately.
Conversion Formula
kD = mm² × 1013.25
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.
About Kilodarcy
The kilodarcy (kD) equals 10³ D ≈ 9.869 × 10⁻¹⁰ m², used for very high-permeability porous structures. Gravel packs in oil wells: 1-100 kD; vuggy dissolved carbonates: 1-10 kD; loose sand-gravel mixtures: 10-1 000 kD. 1 kD = 10³ D = 10⁶ mD.
Quick Reference Table
| Millimetre squared (mm²) | Kilodarcy (kD) |
|---|---|
| 1 mm² | 1013.25 kD |
| 2 mm² | 2026.5 kD |
| 5 mm² | 5066.25 kD |
| 10 mm² | 10132.5 kD |
| 25 mm² | 25331.2 kD |
| 50 mm² | 50662.5 kD |
| 100 mm² | 101325 kD |