Convert Poises to Micropascal-seconds
Convert Poises (P) to Micropascal-seconds (µPa·s) instantly and accurately.
Conversion Formula
µPa·s = P × 100000
About Poises
The poise (P) equals 0.1 Pa·s (exact), defined in the CGS system as 1 g/(cm·s). Named after Jean Louis Marie Poiseuille, it was the dominant viscosity unit before SI adoption. Fluid-mechanics textbooks and older ASTM and API data tables still list viscosities in P. Motor oil at 100 °C is ≈0.02-0.05 P; water at 20 °C is ≈0.01 P (= 1 cP). 1 P = 0.1 Pa·s = 100 cP.
About Micropascal-seconds
The micropascal-second (µPa·s) equals 10⁻⁶ Pa·s, the viscosity range of dilute gases at ambient conditions. Air at 20 °C has a dynamic viscosity of ≈18.5 µPa·s; helium ≈19.6 µPa·s; hydrogen ≈9.0 µPa·s. Gas turbine and aerodynamics calculations routinely work at this scale. 1 µPa·s = 10⁻⁶ Pa·s = 10⁻³ mPa·s = 10⁻⁵ cP.
Quick Reference Table
| Poises (P) | Micropascal-seconds (µPa·s) |
|---|---|
| 1 P | 100000 µPa·s |
| 2 P | 200000 µPa·s |
| 5 P | 500000 µPa·s |
| 10 P | 1000000 µPa·s |
| 25 P | 2500000 µPa·s |
| 50 P | 5000000 µPa·s |
| 100 P | 10000000 µPa·s |