638.5 darcy = 638,500 mD
| darcy | mD |
|---|---|
| 623.5 darcy | 623,500 |
| 628.5 darcy | 628,500 |
| 633.5 darcy | 633,500 |
| 638.5 | 638,500 |
| 643.5 darcy | 643,500 |
| 648.5 darcy | 648,500 |
| 653.5 darcy | 653,500 |
638.5 darcy = 638,500 mD
1 darcy = 1,000 millidarcy (mD) · 1 mD = 1,000 microdarcy (μD) · 1 darcy ≈ 9.869×10⁻¹³ m²