Millidarcy to Darcy Converter
1 millidarcy is exactly 0.001 darcies. Convert millidarcies (mD) to darcies (D) below: type a value and the result updates as you type.
mD to D calculator
Result
Millidarcy to Darcy conversion
1 mD = 0.001 Done millidarcy in darcies
1 D = 1000 mDone darcy in millidarcies
Millidarcy (mD): One thousandth of a darcy. The usual unit for oil and gas reservoir rock.
Darcy (D): Permeability that lets 1 cm³/s of a 1 cP fluid pass through 1 cm² under a pressure gradient of 1 atm/cm: about 9.869233 × 10⁻¹³ m².
Source:NIST Special Publication 811 (2008), Appendix B.8
How to convert millidarcies to darcies
To convert millidarcies to darcies, multiply the number of millidarcies by 0.001.
Formula
D = mD × 0.001
Examples
- 5 mD = 5 × 0.001 = 0.005 D
- 25 mD = 25 × 0.001 = 0.025 D
- 100 mD = 100 × 0.001 = 0.1 D
Millidarcy to Darcy conversion table
| Millidarcy (mD) | Darcy (D) |
|---|---|
| 0.1 mD | 0.0001 D |
| 0.5 mD | 0.0005 D |
| 1 mD | 0.001 D |
| 2 mD | 0.002 D |
| 3 mD | 0.003 D |
| 5 mD | 0.005 D |
| 10 mD | 0.01 D |
| 20 mD | 0.02 D |
| 25 mD | 0.025 D |
| 50 mD | 0.05 D |
| 100 mD | 0.1 D |
| 250 mD | 0.25 D |
| 500 mD | 0.5 D |
| 1000 mD | 1 D |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many darcies are in one millidarcy?
- One millidarcy is exactly 0.001 darcies.
- How do I convert darcies to millidarcies?
- To convert darcies to millidarcies, multiply the number of darcies by 1000. The formula is mD = D × 1000.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 0.001 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a millidarcy or a darcy?
- A darcy is 1000 times larger than a millidarcy. In other words, a millidarcy is exactly 1/1000 of a darcy.