Darcy to Millidarcy Converter
1 darcy is exactly 1000 millidarcies. Convert darcies (D) to millidarcies (mD) below: type a value and the result updates as you type.
D to mD calculator
Result
Darcy to Millidarcy conversion
1 D = 1000 mDone darcy in millidarcies
1 mD = 0.001 Done millidarcy in darcies
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.
Millidarcy (mD): One thousandth of a darcy. The usual unit for oil and gas reservoir rock.
Source:NIST Special Publication 811 (2008), Appendix B.8
How to convert darcies to millidarcies
To convert darcies to millidarcies, multiply the number of darcies by 1000.
Formula
mD = D × 1000
Examples
- 5 D = 5 × 1000 = 5000 mD
- 25 D = 25 × 1000 = 25000 mD
- 100 D = 100 × 1000 = 100000 mD
Darcy to Millidarcy conversion table
| Darcy (D) | Millidarcy (mD) |
|---|---|
| 0.1 D | 100 mD |
| 0.5 D | 500 mD |
| 1 D | 1000 mD |
| 2 D | 2000 mD |
| 3 D | 3000 mD |
| 5 D | 5000 mD |
| 10 D | 10000 mD |
| 20 D | 20000 mD |
| 25 D | 25000 mD |
| 50 D | 50000 mD |
| 100 D | 100000 mD |
| 250 D | 250000 mD |
| 500 D | 500000 mD |
| 1000 D | 1000000 mD |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many millidarcies are in one darcy?
- One darcy is exactly 1000 millidarcies.
- How do I convert millidarcies to darcies?
- To convert millidarcies to darcies, multiply the number of millidarcies by 0.001. The formula is D = mD × 0.001.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 1000 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a darcy or a millidarcy?
- A darcy is 1000 times larger than a millidarcy. In other words, a millidarcy is exactly 1/1000 of a darcy.