Convert Millidarcies to Square Metres (mD to m2)
1 millidarcy (mD) = 9.869233 × 10⁻¹⁶ square metres (m²). 1 m² = 1.013249966 × 10¹⁵ mD. Example: 100 mD = 100 × 9.869233 × 10⁻¹⁶ = 9.869233 × 10⁻¹⁴ m².
Also searched as millidarcies to m2, millidarcies in m2, millidarcies into square metres, mD to m2, mD in square metres, mD into square metre, millidarcy to square metre, mD to square metres converter, millidarcies to square meters and how many square metres in a millidarcy.
1 mD = 9.869233e-16 m²
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk millidarcy to square metre converter to paste a column from Excel.
How to Convert Millidarcy to Square Metre
- 1 mD = 9.869233 × 10⁻¹⁶ m²
- 1 m² = 1.013249966 × 10¹⁵ mD
- Example: convert 100 mD to m²: 100 mD = 100 × 9.869233 × 10⁻¹⁶ m² = 9.869233 × 10⁻¹⁴ m²
Formula
m² = mD × 9.869233 × 10⁻¹⁶
or m² = mD ÷ 1.013249965828 × 10¹⁵
Derivation from SI units:
- 1 mD = 10⁻³ D = 9.869233 × 10⁻¹⁶ m².
- Intrinsic permeability k has dimension of area: k = K μ / (ρ g).
One unit is a measured value, so the factor is approximate. Millidarcy definition: millidarcy; Square Metre definition: square metre.
Worked examples
- A good reservoir of 100 mD is 9.869233 × 10⁻¹⁴ m².
100 mD × 9.869233 × 10⁻¹⁶ = 9.869233 × 10⁻¹⁴ m² - A tight-gas sand of 0.1 mD is 9.869233 × 10⁻¹⁷ m².
0.1 mD × 9.869233 × 10⁻¹⁶ = 9.869233 × 10⁻¹⁷ m²
Millidarcy to Square Metre conversion table
| Millidarcies (mD) | Square Metres (m²) |
|---|---|
| 0.001 mD | 9.869233 × 10⁻¹⁹ m² |
| 0.01 mD | 9.869233 × 10⁻¹⁸ m² |
| 0.1 mD | 9.869233 × 10⁻¹⁷ m² |
| 1 mD | 9.869233 × 10⁻¹⁶ m² |
| 10 mD | 9.869233 × 10⁻¹⁵ m² |
| 50 mD | 4.9346165 × 10⁻¹⁴ m² |
| 100 mD | 9.869233 × 10⁻¹⁴ m² |
| 250 mD | 2.46730825 × 10⁻¹³ m² |
| 500 mD | 4.9346165 × 10⁻¹³ m² |
| 1000 mD | 9.869233 × 10⁻¹³ m² |
Where it's used
Reservoir permeabilities in millidarcies are converted to m² for simulation input and SI papers. Multiply by 9.869233 × 10⁻¹⁶.
Millidarcy to other intrinsic permeability units
| Conversion | 1 mD equals |
|---|---|
| millidarcy to square metre | 9.869233 × 10⁻¹⁶ m² |
| millidarcy to darcy | 0.001 D |
| millidarcy to square micrometre | 0.0009869233 µm² |
| millidarcy to square centimetre | 9.869233 × 10⁻¹² cm² |
Frequently asked questions
What is 1 mD in m²?
1 mD = 9.869233 × 10⁻¹⁶ m².
How many square metres are in 1 millidarcy?
1 mD = 9.869233 × 10⁻¹⁶ m².
How do I convert millidarcies to square metres?
Multiply the value in mD by 9.869233 × 10⁻¹⁶, or divide it by 1.013249966 × 10¹⁵. For example, 100 mD × 9.869233 × 10⁻¹⁶ = 9.869233 × 10⁻¹⁴ m².
Is the mD to m² conversion exact?
Not exactly. The millidarcy is a measured value (see sources). Results are good to about 5 significant figures.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "darcy".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units) and Table 8 (non-SI units accepted for use with the SI).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Millidarcies to Square Metres (mD to m2). Retrieved October 29, 2026, from https://scientificconverters.com/intrinsic-permeability/millidarcies-to-square-meters/
IEEE
Scientific Converters, "Convert Millidarcies to Square Metres (mD to m2)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/intrinsic-permeability/millidarcies-to-square-meters/