Permeability Converter
Enter a value below to convert between metric, imperial, and standard permeability units.
Convert Permeability
Enter a value and select the units to convert between square meters (m²), darcies, and millidarcies.
You can change the units using the dropdowns above or click on a unit button.
Common Permeability Reference Points
Here are some common permeability values in Square Meter (Permeability) (m²), Darcy (D), and Millidarcy (mD). Click any preset value or arrow to load it into the converter.
| Description | Square Meter (Permeability) (m²) | Darcy (D) | Millidarcy (mD) |
|---|---|---|---|
| 1 square meter (permeability) unit | 1 | 1.013250e+12 | 1.013250e+15 |
| 5 square meters (m²) | 5 | 5.066250e+12 | 5.066250e+15 |
| 10 square meters (m²) benchmark | 10 | 1.013250e+13 | 1.013250e+16 |
| 25 square meters (m²) | 25 | 2.533125e+13 | 2.533125e+16 |
| 50 square meters (m²) | 50 | 5.066250e+13 | 5.066250e+16 |
| 100 square meters (m²) reference | 100 | 1.013250e+14 | 1.013250e+17 |
Permeability Conversion Formulas
Use the following formulas to convert between square meters (m²), darcies, and millidarcies.
All permeability conversions are anchored to the international SI base unit (Square Meter (Permeability)) for full scientific and engineering accuracy.
More Square Meter & Darcy Conversions
Convert from Square Meters
Frequently Asked Questions
All Permeability Conversion Calculators (6)
Select any dedicated permeability pair below for worked examples and printable tables
Category Conversion Matrix
Simultaneous comparison of 5 units in this category
Permeability Unit Definitions & Symbols
Square Meter (Permeability) (m²)
SISI unit of porous media intrinsic permeability.
Darcy (D)
OTHERPetroleum reservoir permeability unit (≈ 0.986923 µm²).
Millidarcy (mD)
OTHEROne-thousandth of a Darcy (9.869×10⁻¹⁶ m²).
Microdarcy (µD)
OTHERTight shale permeability unit (10⁻⁶ Darcy).
Square Micrometer (µm²)
METRICEqual to 10⁻¹² m² (approx. 1.01325 Darcy).
References
- [1]NIST HB 133 StandardNIST (NIST HB 133 / SP 811)·Checking the Net Contents of Packaged Goods, Handbook 133 - 2019 Edition & NIST SP 811
- [2]BIPM SI BrochureBIPM (BIPM SI-9)·The International System of Units (SI Brochure, 9th Edition)
- [3]NIST SP 811 Appendix B.9NIST SP 811 (NIST SP 811 App. B.9)·NIST Guide to the SI, Appendix B.9: Factors for Units Listed by Kind of Quantity or Field of Science