Pascal second (Pa·s)
SI unit of dynamic (absolute) viscosity. Water at 20 °C is about 0.001 Pa·s.
What is a pascal second?
- Symbol
- Pa·s
- Quantity
- Dynamic Viscosity
- Unit system
- SI
- Definition
- SI unit of dynamic (absolute) viscosity. Water at 20 °C is about 0.001 Pa·s.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
The SI unit of dynamic viscosity, used for thick fluids such as honey, polymer melts, adhesives and molten glass.
Pascal second in other dynamic viscosity units
- 1 Pa·s = 1000 mPa·sMillipascal second
- 1 Pa·s = 10 PPascal second to Poise converter
- 1 Pa·s = 1000 cPPascal second to Centipoise converter
- 1 Pa·s ≈ 0.6719689751 lb/(ft·s)Pound per foot second
- 1 Pa·s ≈ 0.02088543423 lbf·s/ft²Pound-force second per square foot
- 1 Pa·s ≈ 0.0001450377377 reynReyn
Pascal second quick reference
| Pascal second | Poise | Centipoise | Millipascal second |
|---|---|---|---|
| 1 Pa·s | = 10 P | = 1000 cP | = 1000 mPa·s |
| 10 Pa·s | = 100 P | = 10000 cP | = 10000 mPa·s |
| 100 Pa·s | = 1000 P | = 100000 cP | = 100000 mPa·s |
| 1000 Pa·s | = 10000 P | = 1000000 cP | = 1000000 mPa·s |
Where the pascal second fits
The next smaller dynamic viscosity unit is the poise (P). 1 Pa·s = 10 P, and 1 P = 0.1 Pa·s.
The next larger dynamic viscosity unit is the pound per foot second (lb/(ft·s)). 1 Pa·s ≈ 0.6719689751 lb/(ft·s), and 1 lb/(ft·s) ≈ 1.488163944 Pa·s.
Frequently asked questions
- How many poise are in one pascal second?
- One pascal second = 10 P (poise).
- How many centipoise are in one pascal second?
- One pascal second = 1000 cP (centipoise).
- How many millipascal seconds are in one pascal second?
- One pascal second = 1000 mPa·s (millipascal seconds).