Convert Square Metres to Millidarcies (m2 to mD)
1 square metre (m²) = 1.013249966 × 10¹⁵ millidarcies (mD). 1 mD = 9.869233 × 10⁻¹⁶ m². Example: 15 m² = 15 × 1.013249966 × 10¹⁵ = 1.519874949 × 10¹⁶ mD.
Also searched as square metres to mD, square metres in mD, square metres into millidarcies, m2 to mD, m2 in millidarcies, m2 into millidarcy, square metre to millidarcy, m2 to millidarcies converter, square meters to millidarcies and how many millidarcies in a square metre.
1 m² = 1.013249966e15 mD
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk square metre to millidarcy converter to paste a column from Excel.
How to Convert Square Metre to Millidarcy
- 1 m² = 1.013249966 × 10¹⁵ mD
- 1 mD = 9.869233 × 10⁻¹⁶ m²
- Example: convert 15 m² to mD: 15 m² = 15 × 1.013249966 × 10¹⁵ mD = 1.519874949 × 10¹⁶ mD
Formula
mD = m² × 1.013249965828 × 10¹⁵
Derivation from SI units:
- Intrinsic permeability k has dimension of area: k = K μ / (ρ g).
- 1 mD = 10⁻³ D = 9.869233 × 10⁻¹⁶ m².
One unit is a measured value, so the factor is approximate. Square Metre definition: square metre; Millidarcy definition: millidarcy.
Worked examples
- A reading of 0.000000000001 m² converts to 1013.249966 mD.
0.000000000001 m² × 1.013249966 × 10¹⁵ = 1013.249966 mD - A value of 0.000000001 m² is 1013249.966 mD.
0.000000001 m² × 1.013249966 × 10¹⁵ = 1013249.966 mD
Square Metre to Millidarcy conversion table
| Square Metres (m²) | Millidarcies (mD) |
|---|---|
| 0.000000000000001 m² | 1.013249966 mD |
| 0.00000000000001 m² | 10.13249966 mD |
| 0.0000000000001 m² | 101.3249966 mD |
| 0.000000000001 m² | 1013.249966 mD |
| 0.00000000001 m² | 10132.49966 mD |
| 0.0000000001 m² | 101324.9966 mD |
| 0.000000001 m² | 1013249.966 mD |
| 0.00000001 m² | 10132499.66 mD |
| 0.0000001 m² | 101324996.6 mD |
| 0.000001 m² | 1013249966 mD |
Where it's used
Square Metres are used for reservoir and porous-media flow, while millidarcies appear in reservoir rock classification. Both measure intrinsic permeability of a porous medium, so the conversion is a fixed factor.
Square Metre to other intrinsic permeability units
| Conversion | 1 m² equals |
|---|---|
| square metre to millidarcy | 1.013249966 × 10¹⁵ mD |
| square metre to darcy | 1013249966000 D |
| square metre to square micrometre | 1000000000000 µm² |
| square metre to square centimetre | 10000 cm² |
Frequently asked questions
How many millidarcies are in 1 square metre?
1 m² = 1.013249966 × 10¹⁵ mD.
How do I convert square metres to millidarcies?
Multiply the value in m² by 1.013249966 × 10¹⁵. For example, 15 m² × 1.013249966 × 10¹⁵ = 1.519874949 × 10¹⁶ mD.
Is the m² to mD conversion exact?
Not exactly. The millidarcy is a measured value (see sources). Results are good to about 5 significant figures.
Sources
- 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).
- 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".
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 Square Metres to Millidarcies (m2 to mD). Retrieved October 29, 2026, from https://scientificconverters.com/intrinsic-permeability/square-meters-to-millidarcies/
IEEE
Scientific Converters, "Convert Square Metres to Millidarcies (m2 to mD)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/intrinsic-permeability/square-meters-to-millidarcies/