Permeability (23°C) to Permeability Inches (23°C) Conversion
Convert between Permeability (23°C) and Permeability Inches (23°C) quickly and accurately.
How to Convert Permeability (23°C) to Permeability Inches (23°C)
Conversion Formula
Example
Convert 15 perm (23°C) to perm·in (23°C):
Unit Information
Learn about the permeability units you're converting between
Permeability (23°C)
perm (23°C)
Definition
The permeability at 23°C is a traditional unit of permeability used in building materials and textiles, representing the vapor transmission rate through a material at 23 degrees Celsius (room temperature). It provides a more practical reference temperature for most applications.
History/Origin
The permeability at 23°C was established as a standard reference temperature for permeability measurements in building materials, as 23°C represents typical room temperature conditions. It provides more relevant data for practical building applications than 0°C measurements.
Current Use
Permeability at 23°C is widely used in building materials testing, HVAC design, and construction specifications where room temperature conditions are more relevant than freezing point measurements for practical applications.
Multiplier
6E-11
Offset
0
Permeability Inches (23°C)
perm·in (23°C)
Definition
The permeability inches at 23°C is a unit of permeability used in the US building industry, representing the vapor transmission rate through a material at 23 degrees Celsius per inch of thickness. It provides a thickness-normalized measure at room temperature conditions.
History/Origin
The permeability inches at 23°C was established as a standard reference temperature for thickness-normalized permeability measurements in the US building industry, providing more practical data for typical building conditions than 0°C measurements.
Current Use
Permeability inches at 23°C is widely used in US building codes, HVAC design, and construction specifications where room temperature conditions and thickness-normalized values are essential for proper material selection and building performance evaluation.
Multiplier
1E-12
Offset
0
Permeability (23°C) to Permeability Inches (23°C) Conversion Table
| Permeability (23°C) [perm (23°C)] | Permeability Inches (23°C) [perm·in (23°C)] |
|---|---|
| 1 perm (23°C) | 39.370173 perm·in (23°C) |
| 10 perm (23°C) | 393.701732 perm·in (23°C) |
| 25 perm (23°C) | 984.254329 perm·in (23°C) |
| 50 perm (23°C) | 1968.508658 perm·in (23°C) |
| 100 perm (23°C) | 3937.017317 perm·in (23°C) |
| 0 perm (23°C) | 0E+0 perm·in (23°C) |
| -10 perm (23°C) | -393.701732 perm·in (23°C) |
| -40 perm (23°C) | -1574.806927 perm·in (23°C) |
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