Convert Pascal-seconds to Poise
Instantly convert Pascal-seconds (Pa·s) to Poise (P) with our free online calculator.
Formula: Pa·s to P — multiply by 10
Reference Table
| Pascal-seconds (Pa·s) | Poise (P) |
|---|---|
| 1 | 10 |
| 5 | 50 |
| 10 | 100 |
| 25 | 250 |
| 50 | 500 |
| 100 | 1000 |
How to Convert Pascal-seconds to Poise
Formula
To convert Pascal-seconds (Pa·s) to Poise (P): multiply by 10
Step-by-Step
- Start with your value in Pascal-seconds (Pa·s).
- Multiply by 10 to perform the conversion.
- The result is your value expressed in Poise (P).
Conversion Factor
1 Pa·s = 10 P
Reverse Factor
1 P = 0.1 Pa·s
Worked Example
Convert 25 Pascal-seconds to Poise: 25 Pa·s = 250 P
About Pascal-second (Pa·s)
The SI unit of dynamic (absolute) viscosity (ISO 80000-4 §4-32) — the ratio of shear stress to velocity gradient in a flowing Newtonian fluid (τ = μ · du/dy). Pa·s is the universal reference unit in fluid mechanics research, CFD solver inputs (Ansys Fluent, OpenFOAM, COMSOL all use Pa·s internally), rheology and tribology research, lubricant film calculations, and polymer melt-flow analysis. Reference values: water at 20 °C is 1.002 × 10⁻³ Pa·s (the calibration baseline), air at 20 °C is 1.81 × 10⁻⁵ Pa·s (~55× less viscous than water), SAE 30 engine oil at 40 °C ≈ 0.1 Pa·s, honey at room temperature ~10 Pa·s, peanut butter ~250 Pa·s, the asthenosphere of Earth's mantle ~10¹⁹ Pa·s. Glass at its working temperature (~1,400 °C) is ~100 Pa·s; at its glass-transition temperature ~10¹² Pa·s — the conventional definition of Tg. Convert Pa·s to cP (centipoise) by multiplying by 1,000; to lb/(ft·s) by dividing by 1.488.
About Poise (P)
The CGS unit of dynamic viscosity, equal to exactly 0.1 Pa·s. Named after French physician Jean Léonard Marie Poiseuille, whose 1840s experimental and theoretical work on blood-flow in small tubes produced the Hagen-Poiseuille equation that underpins modern laminar-flow analysis. Although superseded by Pa·s in modern SI usage, the poise still appears in: older fluid-dynamics literature (pre-1980 US and European textbooks), geophysics and Earth-science publications for highly viscous fluids where the magnitude is convenient (asthenosphere ~10¹⁸ P, lower mantle ~10²² P, basaltic lava 10² to 10⁴ P at eruption temperature, rhyolitic lava 10⁹ to 10¹¹ P), glass-manufacturing process tables (the working point of glass = 10⁴ P; softening point = 10⁷·⁶ P; annealing point = 10¹³·² P; strain point = 10¹⁴·⁵ P), and some polymer-rheology / extrusion literature where melt viscosities of 10⁴ to 10⁷ P are common.
Quick Facts
- 1 Pascal-second equals 10 Poise
- 1 Poise equals 0.1 Pascal-seconds
- Pascal-second is a unit of dynamic viscosity
- Poise is a unit of dynamic viscosity
- This conversion is commonly used in lubricant selection, chemical processing, and fluid dynamics
- The Pascal-second belongs to the metric system
Common Pascal-second to Poise Conversions
| Pascal-seconds (Pa·s) | Poise (P) |
|---|---|
| 0.01 | 0.1 |
| 0.1 | 1 |
| 0.25 | 2.5 |
| 0.5 | 5 |
| 1 | 10 |
| 2 | 20 |
| 3 | 30 |
| 5 | 50 |
| 10 | 100 |
| 15 | 150 |
| 20 | 200 |
| 25 | 250 |
| 50 | 500 |
| 75 | 750 |
| 100 | 1000 |
| 250 | 2500 |
| 500 | 5000 |
| 1000 | 10000 |
| 5000 | 50000 |
| 10000 | 100000 |
Understanding Pascal-seconds
The Pascal-second (symbol: Pa·s) is a unit of dynamic viscosity. The SI unit of dynamic (absolute) viscosity (ISO 80000-4 §4-32) — the ratio of shear stress to velocity gradient in a flowing Newtonian fluid (τ = μ · du/dy). Pa·s is the universal reference unit in fluid mechanics research, CFD solver inputs (Ansys Fluent, OpenFOAM, COMSOL all use Pa·s internally), rheology and tribology research, lubricant film calculations, and polymer melt-flow analysis. Reference values: water at 20 °C is 1.002 × 10⁻³ Pa·s (the calibration baseline), air at 20 °C is 1.81 × 10⁻⁵ Pa·s (~55× less viscous than water), SAE 30 engine oil at 40 °C ≈ 0.1 Pa·s, honey at room temperature ~10 Pa·s, peanut butter ~250 Pa·s, the asthenosphere of Earth's mantle ~10¹⁹ Pa·s. Glass at its working temperature (~1,400 °C) is ~100 Pa·s; at its glass-transition temperature ~10¹² Pa·s — the conventional definition of Tg. Convert Pa·s to cP (centipoise) by multiplying by 1,000; to lb/(ft·s) by dividing by 1.488.
It belongs to the metric measurement system.
Pascal-seconds are commonly used in lubricant selection, chemical processing, and fluid dynamics.
Understanding Poise
The Poise (symbol: P) is a unit of dynamic viscosity. The CGS unit of dynamic viscosity, equal to exactly 0.1 Pa·s. Named after French physician Jean Léonard Marie Poiseuille, whose 1840s experimental and theoretical work on blood-flow in small tubes produced the Hagen-Poiseuille equation that underpins modern laminar-flow analysis. Although superseded by Pa·s in modern SI usage, the poise still appears in: older fluid-dynamics literature (pre-1980 US and European textbooks), geophysics and Earth-science publications for highly viscous fluids where the magnitude is convenient (asthenosphere ~10¹⁸ P, lower mantle ~10²² P, basaltic lava 10² to 10⁴ P at eruption temperature, rhyolitic lava 10⁹ to 10¹¹ P), glass-manufacturing process tables (the working point of glass = 10⁴ P; softening point = 10⁷·⁶ P; annealing point = 10¹³·² P; strain point = 10¹⁴·⁵ P), and some polymer-rheology / extrusion literature where melt viscosities of 10⁴ to 10⁷ P are common.
It belongs to the metric measurement system.
Poise are commonly used in lubricant selection, chemical processing, and fluid dynamics.
Why Convert Pascal-seconds to Poise?
Converting between Pascal-seconds and Poise is a frequent requirement for engineers, scientists, and students working with dynamic viscosity values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate dynamic viscosity conversion is essential.
Frequently Asked Questions
How do I convert Pascal-seconds to Poise?
The SI unit of dynamic (absolute) viscosity (ISO 80000-4 §4-32) — the ratio of shear stress to velocity gradient in a flowing Newtonian fluid (τ = μ · du/dy). To convert Pascal-seconds to Poise, multiply by 10. For example, 25 Pa·s equals 250 P.
How many Poise are in 1 Pascal-second?
There are 10 Poise in 1 Pascal-second.
How many Pascal-seconds are in 1 Poise?
There are 0.1 Pascal-seconds in 1 Poise.
What is the formula for Pascal-second to Poise conversion?
The formula is: multiply by 10. This means 1 Pa·s = 10 P.
Is a Pascal-second bigger than a Poise?
No. One Pascal-second is smaller than one Poise because 1 Pa·s equals 10 P, which is greater than 1.
When do you need to convert between Pascal-seconds and Poise?
The CGS unit of dynamic viscosity, equal to exactly 0. Pascal-second and Poise are both dynamic viscosity units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.