Permeability (0°C) (perm (0°C))
Perm (0°C) equals 5.72135×10⁻¹¹ kg/(Pa·s·m²) — the US building-science perm unit referenced at 0°C.
Perm at 0°C rates vapor permeance of house wraps, sheathing, and insulation in US construction codes.
Convert permeability (0°c) to kilogram per pascal second square meter instantly. Type in either field — results update live.
Selected perm (0°C) values converted to kg/(Pa·s·m²) using the exact factor from this tool.
| perm (0°C) | kg/(Pa·s·m²) |
|---|---|
| 0.01 | 5.72135e-13 |
| 0.1 | 5.72135e-12 |
| 1 | 5.72135e-11 |
| 2 | 1.14427e-10 |
| 3 | 1.716405e-10 |
| 5 | 2.860675e-10 |
| 10 | 5.72135e-10 |
| 20 | 1.14427e-9 |
| 50 | 2.860675e-9 |
| 100 | 5.72135e-9 |
| 1,000 | 5.72135e-8 |
Exact conversion factors in both directions, plus a worked example.
1 perm (0°C) = 5.72135e-11 kg/(Pa·s·m²)
1 kg/(Pa·s·m²) = 1.747839234e+10 perm (0°C)
To convert permeability (0°c) to kilogram per pascal second square meter, multiply by 5.72135e-11.
To convert kilogram per pascal second square meter to permeability (0°c), multiply by 1.747839234e+10.
Example: convert 10 perm (0°C) to kg/(Pa·s·m²)
10 × 5.72135e-11 = 5.72135e-10 kg/(Pa·s·m²)
Short background on the units used in this conversion.
Perm (0°C) equals 5.72135×10⁻¹¹ kg/(Pa·s·m²) — the US building-science perm unit referenced at 0°C.
Perm at 0°C rates vapor permeance of house wraps, sheathing, and insulation in US construction codes.
The kilogram per pascal second square meter (kg/(Pa·s·m²)) is the SI base for vapor permeability through materials.
SI permeability quantifies how readily water vapor passes through membranes, films, and building assemblies.
kg/(Pa·s·m²) = perm (0°C) × 5.72135e-11perm (0°C) = kg/(Pa·s·m²) × 17,478,392,337.4728, using the same exact factors as this converter.Jump to any permeability conversion starting from permeability (0°c) — including the reverse direction and every other unit in our dataset.