| Formula | Calculator | Reverse units |
|---|---|---|
| 1 perm (20 °C) = 2275.497 darcy (20 °C) | Factors for darcy (20 °C) | |
| 1 perm (20 °C) = 2.24574e-9 kilogram meter/pascal square second | Factors for kilogram meter/pascal square second | |
| 1 perm (20 °C) = 2275497 millidarcy (20 °C) | Factors for millidarcy (20 °C) | |
| 1 perm (20 °C) = 2.24574e-5 square centimeter | Factors for square centimeter | |
| 1 perm (20 °C) = 2.417295e-8 square foot | Factors for square foot | |
| 1 perm (20 °C) = 2.24574e-9 square meter | Factors for square meter |