Nanograms per pascal second square meter to US perms
Type a value in ng/(Pa·s·m²) to get it in perm instantly.
That's 1.74× as open as aluminum foil, while polythene sheet is 3.4× higher. That is a class I vapor barrier: essentially nothing gets through.
Convert the other way: perm to ng/(Pa·s·m²)
What it means
How much vapor gets through?
Permeance belongs to a material of a stated thickness. Permeability — perm-inches — belongs to the material itself, and must be divided by the thickness.
The math
How to convert ng/(Pa·s·m²) to perm
To convert nanograms per pascal second square meter to US perms, multiply by 0.0174057.
Example: 1 ng/(Pa·s·m²) × 0.0174057 = 0.0174057 perm.
In the other direction, 1 perm = 57.4525 ng/(Pa·s·m²).
Every unit
Your permeance in every unit
Tables
ng/(Pa·s·m²) to perm conversion table
| ng/(Pa·s·m²) | perm |
|---|---|
| 0.01 ng/(Pa·s·m²) | 0.000174057 perm |
| 0.05 ng/(Pa·s·m²) | 0.000870284 perm |
| 0.1 ng/(Pa·s·m²) | 0.00174057 perm |
| 0.5 ng/(Pa·s·m²) | 0.00870284 perm |
| 1 ng/(Pa·s·m²) | 0.0174057 perm |
| 5 ng/(Pa·s·m²) | 0.0870284 perm |
| 10 ng/(Pa·s·m²) | 0.174057 perm |
| 20 ng/(Pa·s·m²) | 0.348114 perm |
| 50 ng/(Pa·s·m²) | 0.870284 perm |
| 100 ng/(Pa·s·m²) | 1.74057 perm |
perm to ng/(Pa·s·m²) conversion table
| perm | ng/(Pa·s·m²) |
|---|---|
| 0.01 perm | 0.574525 ng/(Pa·s·m²) |
| 0.05 perm | 2.87263 ng/(Pa·s·m²) |
| 0.1 perm | 5.74525 ng/(Pa·s·m²) |
| 0.5 perm | 28.7263 ng/(Pa·s·m²) |
| 1 perm | 57.4525 ng/(Pa·s·m²) |
| 5 perm | 287.263 ng/(Pa·s·m²) |
| 10 perm | 574.525 ng/(Pa·s·m²) |
| 20 perm | 1,149.05 ng/(Pa·s·m²) |
| 50 perm | 2,872.63 ng/(Pa·s·m²) |
| 100 perm | 5,745.25 ng/(Pa·s·m²) |
Quick answers
Quick answers
- How many perm is 1 ng/(Pa·s·m²)?
- 1 ng/(Pa·s·m²) is 0.0174057 perm.
- How many perm is 10 ng/(Pa·s·m²)?
- 10 ng/(Pa·s·m²) is 0.174057 perm.
The units
About these units
Nanograms per pascal second square meter (ng/(Pa·s·m²))
The SI unit, used throughout European standards.
US perms (perm)
The US building unit: grains per hour per square foot per inch of mercury.
Keep going