Convert Millidarcy to Inch squared
Convert Millidarcy (mD) to Inch squared (in²) instantly and accurately.
Conversion Formula
in² = mD × 1.529734123e-12
About Millidarcy
The millidarcy (mD) equals 10⁻³ D ≈ 9.869 × 10⁻¹⁶ m², the everyday unit in petroleum reservoir engineering worldwide. Conventional sandstone reservoirs: 1-1 000 mD; carbonate reservoirs: 0.1-100 mD; economic gas recovery typically requires k ≥ 0.1 mD. Permeameter and well-test reports give results in mD. 1 mD = 10⁻³ D = 10³ µD.
About Inch squared
The square inch (in²) equals (0.0254 m)² = 6.4516 × 10⁻⁴ m² ≈ 6.54 × 10¹¹ D. An imperial area unit included for unit-conversion completeness; it appears in some US oil-country tubular goods and industrial filter-media specifications where flow cross-sections are stated in square inches. 1 in² ≈ 6.452 cm² = 6.4516 × 10⁻⁴ m².
Quick Reference Table
| Millidarcy (mD) | Inch squared (in²) |
|---|---|
| 1 mD | 1.53 × 10-12 in² |
| 2 mD | 3.059 × 10-12 in² |
| 5 mD | 7.649 × 10-12 in² |
| 10 mD | 1.53 × 10-11 in² |
| 25 mD | 3.824 × 10-11 in² |
| 50 mD | 7.649 × 10-11 in² |
| 100 mD | 1.53 × 10-10 in² |