Convert Foot squared to Nanodarcy
Convert Foot squared (ft²) to Nanodarcy (nD) instantly and accurately.
Conversion Formula
nD = ft² × 9.413400528e+19
About Foot squared
The square foot (ft²) equals (0.3048 m)² = 9.290 304 × 10⁻² m² ≈ 9.41 × 10¹³ D. An imperial area unit included for unit-conversion completeness; it occasionally appears in US geotechnical reports where flow cross-sections are expressed in square feet. 1 ft² = 144 in² = 9.290 304 × 10⁻² 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
| Foot squared (ft²) | Nanodarcy (nD) |
|---|---|
| 1 ft² | 9.413 × 1019 nD |
| 2 ft² | 1.883 × 1020 nD |
| 5 ft² | 4.707 × 1020 nD |
| 10 ft² | 9.413 × 1020 nD |
| 25 ft² | 2.353 × 1021 nD |
| 50 ft² | 4.707 × 1021 nD |
| 100 ft² | 9.413 × 1021 nD |