Poise to Pascal-Second Converter Formula

Understand the math behind the poise to pascal-second converter. Each variable explained with a worked example.

Use the Poise to Pascal-Second Converter

Formulas Used

Pascal-Seconds

pascal_sec = poise * 0.1

Centipoise

centipoise = poise * 100

Variables

VariableDescriptionDefault
poiseViscosity (Poise)(P)10

How It Works

How to Convert Poise to Pascal-Seconds

Formula

Pa·s = Poise x 0.1

The Poise (P) is the CGS unit of dynamic viscosity, while the Pascal-second (Pa·s) is the SI unit. One Poise equals 0.1 Pa·s because 1 P = 1 g/(cm·s) and converting grams to kilograms and centimeters to meters introduces a factor of 0.1.

Common Viscosities

FluidApproximate Viscosity Water at 20°C0.01 P (1 cP) Olive oil0.8 P (80 cP) Honey20-100 P (2,000-10,000 cP)

Worked Example

Convert 10 Poise to Pascal-seconds.

poise = 10
  1. 01Apply the conversion: 1 P = 0.1 Pa·s
  2. 02Pa·s = 10 * 0.1 = 1.0 Pa·s
  3. 03Also: 10 P = 1,000 cP (centipoise)

Frequently Asked Questions

What is dynamic viscosity?

Dynamic (or absolute) viscosity measures a fluid's internal resistance to flow under an applied shear stress. Higher viscosity means the fluid flows more slowly.

What is the difference between Poise and centipoise?

1 Poise = 100 centipoise. The centipoise is more commonly used because water has a viscosity of approximately 1 centipoise at 20°C, making it a convenient reference.

How does dynamic viscosity differ from kinematic viscosity?

Dynamic viscosity (Pa·s) measures resistance to flow under shear. Kinematic viscosity (m²/s or Stokes) equals dynamic viscosity divided by density. It describes flow under gravity.

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