How to convert perms to perms (0 °C)
perm₀ = perm × 1.004177336Multiply the value in perms by 1.004177336. To go the other way, multiply by 0.9958400418 (or divide by 1.004177336).
A perm is larger than a perm: one perm contains 1.004177336 perms (0 °C).
Worked examples
- 1 perm (23 °C)1 perm × 1.004177336 = 1.004177336 perm₀
- 5 perms5 perm × 1.004177336 = 5.020886679 perm₀
- 10 perms10 perm × 1.004177336 = 10.04177336 perm₀
- 20 perms20 perm × 1.004177336 = 20.08354672 perm₀
- 100 perms100 perm × 1.004177336 = 100.4177336 perm₀
Perms to perms (0 °C) conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Perms (perm) | Perms (perm₀) |
|---|---|
| 0.1 perm | 0.10041773 perm₀ |
| 0.25 perm | 0.25104433 perm₀ |
| 0.5 perm | 0.50208867 perm₀ |
| 1 perm | 1.0041773 perm₀ |
| 2 perm | 2.0083547 perm₀ |
| 3 perm | 3.012532 perm₀ |
| 4 perm | 4.0167093 perm₀ |
| 5 perm | 5.0208867 perm₀ |
| 6 perm | 6.025064 perm₀ |
| 7 perm | 7.0292414 perm₀ |
| 8 perm | 8.0334187 perm₀ |
| 9 perm | 9.037596 perm₀ |
| 10 perm | 10.041773 perm₀ |
| Perms (perm) | Perms (perm₀) |
|---|---|
| 12 perm | 12.050128 perm₀ |
| 15 perm | 15.06266 perm₀ |
| 20 perm | 20.083547 perm₀ |
| 25 perm | 25.104433 perm₀ |
| 30 perm | 30.12532 perm₀ |
| 40 perm | 40.167093 perm₀ |
| 50 perm | 50.208867 perm₀ |
| 75 perm | 75.3133 perm₀ |
| 100 perm | 100.41773 perm₀ |
| 250 perm | 251.04433 perm₀ |
| 500 perm | 502.08867 perm₀ |
| 1,000 perm | 1,004.1773 perm₀ |
About the units
Perm (perm)
The US perm, one grain of water vapour per hour per square foot per inch of mercury (at 23 °C). One perm equals 5.74525×10⁻¹¹ kg/ (kg/(Pa⋅s⋅m²)).
Perm (perm₀)
The perm (perm₀) is a unit of water vapor permeance in the US customary system. One perm equals 5.72135×10⁻¹¹ kg/ (kg/(Pa⋅s⋅m²)).
Frequently asked questions
How many perms (0 °C) are in one perm?
There are 1.004177336 perms (0 °C) in one perm.
How do I convert perms to perms (0 °C)?
Multiply the number of perms by 1.004177336. For example, 10 perm × 1.004177336 = 10.04177336 perm₀.
How many perms are in one perm?
One perm equals 0.9958400418 perms. That is the reverse factor, 1 ÷ 1.004177336.
What is 10 perms in perms (0 °C)?
10 perm = 10.04177336 perm₀.
Is this perm to perm₀ converter accurate?
The conversion uses the accepted reference value. Results are shown to 12 significant figures by default; adjust precision in the converter.