Convert Inch squared to Nanodarcy
Convert Inch squared (in²) to Nanodarcy (nD) instantly and accurately.
Conversion Formula
nD = in² × 6.537083700e+17
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.
About Nanodarcy
The nanodarcy (nD) equals 10⁻⁹ D ≈ 9.869 × 10⁻²² m², the standard permeability unit for ultra-tight unconventional reservoirs. Barnett, Marcellus, and Eagle Ford shale matrix: 1-1 000 nD; crystalline basement rocks and caprocks: below 1 nD. Measured by pulse-decay or GRI crushed-rock methods. 1 nD = 10⁻³ µD = 10⁻⁶ mD.
Quick Reference Table
| Inch squared (in²) | Nanodarcy (nD) |
|---|---|
| 1 in² | 6.537 × 1017 nD |
| 2 in² | 1.307 × 1018 nD |
| 5 in² | 3.269 × 1018 nD |
| 10 in² | 6.537 × 1018 nD |
| 25 in² | 1.634 × 1019 nD |
| 50 in² | 3.269 × 1019 nD |
| 100 in² | 6.537 × 1019 nD |