Convert Darcy to Inch squared
Convert Darcy (D) to Inch squared (in²) instantly and accurately.
Conversion Formula
in² = D × 1.529734123e-9
About Darcy
The darcy (D) ≈ 9.869 × 10⁻¹³ m², the oilfield-standard permeability unit defined by Darcy's law: 1 D passes 1 cm³/s of 1 cP fluid through 1 cm² cross-section under a 1 atm/cm gradient. Highly permeable consolidated sandstone: 1-5 D; unconsolidated sand: 5-20 D. 1 D = 1 000 mD ≈ 0.9869 µm².
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
| Darcy (D) | Inch squared (in²) |
|---|---|
| 1 D | 1.53 × 10-9 in² |
| 2 D | 3.059 × 10-9 in² |
| 5 D | 7.649 × 10-9 in² |
| 10 D | 1.53 × 10-8 in² |
| 25 D | 3.824 × 10-8 in² |
| 50 D | 7.649 × 10-8 in² |
| 100 D | 1.53 × 10-7 in² |