221.5 darcy = 221,500 mD
| darcy | mD |
|---|---|
| 206.5 darcy | 206,500 |
| 211.5 darcy | 211,500 |
| 216.5 darcy | 216,500 |
| 221.5 | 221,500 |
| 226.5 darcy | 226,500 |
| 231.5 darcy | 231,500 |
| 236.5 darcy | 236,500 |
221.5 darcy = 221,500 mD
1 darcy = 1,000 millidarcy (mD) · 1 mD = 1,000 microdarcy (μD) · 1 darcy ≈ 9.869×10⁻¹³ m²