Viscosity dynamic Converter

Convert dynamic viscosity units like poise, centipoise.

Convert Units

Convert dynamic viscosity measurements between poise, centipoise, pascal-second, and more.

What is Dynamic Viscosity Converter?

Dynamic viscosity (also called absolute viscosity) measures a fluid's resistance to shear flow — how thick or runny it is. Honey has high dynamic viscosity; water has low. It is essential in fluid mechanics, lubrication engineering, and food processing.

Understanding the Units

Pascal-second (Pa·s)

The SI unit of dynamic viscosity. Equal to 1,000 centipoise.

Common Uses: Scientific and engineering calculations

Poise (P)

CGS unit of dynamic viscosity.

Common Uses: Older fluid dynamics literature

Conversion: 1 P = 0.1 Pa·s

Centipoise (cP)

One-hundredth of a poise; equal to 1 mPa·s. Most common practical unit.

Common Uses: Food, cosmetics, petroleum, pharmaceuticals

Conversion: 1 cP = 0.001 Pa·s

Common Conversions

  • Water at 20°C: ~1.002 cP = 0.001 Pa·s
  • Olive oil: ~80–100 cP at 20°C
  • Honey: ~2,000–10,000 cP
  • Motor oil SAE 30: ~100–200 cP at operating temperature
  • Ketchup: ~50,000–100,000 cP (shear-thinning)

Conversion Formulas

  • Shear stress = Dynamic viscosity × Shear rate (τ = μ × γ̇)
  • Pa·s to poise: P = Pa·s × 10
  • Poise to centipoise: cP = P × 100
  • Pa·s to centipoise: cP = Pa·s × 1,000

Practical Examples

Blood viscosity: ~3–4 cP — affects cardiovascular workload

Engine oil changes viscosity with temperature (thinner when hot, thicker when cold)

Printer ink viscosity is carefully controlled for consistent droplet size

Air: ~0.0018 cP — very low viscosity, a key reason it flows easily

When to Use Each Unit

Pa·s: SI standard unit for scientific and engineering calculations
Poise/Centipoise (P/cP): Industrial fluid dynamics, food/cosmetics/petroleum industries
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