Convert Foot squared to Nanodarcy

Convert Foot squared (ft²) to Nanodarcy (nD) instantly and accurately.

Foot squared (ft²)
Nanodarcy (nD)

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 ft²9.413 × 1019 nD
2 ft²1.883 × 1020 nD
5 ft²4.707 × 1020 nD
10 ft²9.413 × 1020 nD
25 ft²2.353 × 1021 nD
50 ft²4.707 × 1021 nD
100 ft²9.413 × 1021 nD

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