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Permeability Converter — darcy, millidarcy, m²
Convert intrinsic permeability between darcy, millidarcy, µm² and m² — used in petroleum and groundwater engineering.
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How to Use the Permeability Converter
- Enter a value — type any number. Invalid text and symbols are blocked automatically.
- Select From and To units — choose the units to convert between.
- Read the animated result — the converted value, factor, and full reference table update instantly.
- Use Swap (⇄) — reverse the conversion in one click.
Why Use This Permeability Converter
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Accurate Standards
Built on internationally recognised SI and standards-body conversion factors for dependable results.
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Instant & Animated
Results update live as you type, with a clear visual breakdown across every unit at once.
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Common Permeability Converter Values
Quick reference — 1 Darcy (darcy) is equal to:
| Meter² | m² | 9.869233e-13 |
| Millidarcy | mD | 1,000 |
| Micrometer² | µm² | 0.9869233 |
| Centimeter² | cm² | 0.0000000099 |
Permeability Converter FAQ
A darcy is a unit of intrinsic permeability ≈ 9.869×10⁻¹³ m². Reservoir rocks are usually rated in millidarcies (mD); 1 darcy ≈ 1,000 mD.
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✔ Reviewed by the True Value Calc editorial team🗓 Last updated June 2026📚 Sources: NIST, BIPM SI unit definitions