Viscosity Converter

Convert between different viscosity units including Pa·s, poise, centipoise, and stokes. Essential for chemical engineering, fluid dynamics, and materials science.

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Quick access to frequently used conversions
Unit Information

Scientific Units

Scientific and technical measurements

Pa·s
scientific
Pascal Second
SI unit of dynamic viscosity (1 Pa·s = 1 kg/(m·s))
mPa·s
scientific
Millipascal Second
One thousandth of a pascal second (1 mPa·s = 0.001 Pa·s)
P
scientific
Poise
CGS unit of dynamic viscosity (1 P = 0.1 Pa·s)
cP
scientific
Centipoise
One hundredth of a poise (1 cP = 0.001 Pa·s)
mP
scientific
Millipoise
One thousandth of a poise (1 mP = 0.0001 Pa·s)
m²/s
scientific
Square Meter per Second
SI unit of kinematic viscosity (1 m²/s = 1 Pa·s/ρ)
St
scientific
Stokes
CGS unit of kinematic viscosity (1 St = 0.0001 m²/s)
cSt
scientific
Centistokes
One hundredth of a stokes (1 cSt = 0.000001 m²/s)
lb/(ft·s)
scientific
Pound per Foot Second
Imperial unit of dynamic viscosity (1 lb/(ft·s) = 1.488 Pa·s)
lb/(ft·h)
scientific
Pound per Foot Hour
Imperial unit of dynamic viscosity (1 lb/(ft·h) = 0.000413 Pa·s)
kg/(m·h)
scientific
Kilogram per Meter Hour
Alternative SI unit (1 kg/(m·h) = 0.000278 Pa·s)
g/(cm·s)
scientific
Gram per Centimeter Second
CGS unit equivalent to poise (1 g/(cm·s) = 0.1 Pa·s)
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Common Use Cases

  • Chemical Engineers: Convert viscosity units for process design
  • Fluid Dynamicists: Analyze flow behavior in different units
  • Materials Scientists: Compare material properties across units
  • Lubrication Engineers: Convert oil viscosity specifications
  • Students: Learn about viscosity and fluid mechanics

Viscosity Units

Dynamic Viscosity

Pa·s, poise, centipoise - measure fluid resistance to flow

Kinematic Viscosity

m²/s, stokes, centistokes - viscosity divided by density

Common Units

cP (centipoise) is most common in industry

Applications

Fluid flow, lubrication, polymer processing, food industry

About Viscosity Unit Conversion

Viscosity is a measure of a fluid's resistance to flow and deformation. Dynamic viscosity measures the force required to move one layer of fluid relative to another, while kinematic viscosity relates dynamic viscosity to fluid density. These properties are crucial for understanding fluid behavior in various applications.

The SI unit for dynamic viscosity is the pascal second (Pa·s), while the CGS system uses the poise (P) and centipoise (cP). For kinematic viscosity, the SI unit is square meters per second (m²/s), and the CGS unit is the stokes (St) and centistokes (cSt). Our converter handles all these relationships accurately.

This tool is essential for engineers and scientists working with fluid dynamics, chemical processes, lubrication systems, and materials processing. It provides precise conversions between different viscosity units, ensuring accurate calculations for fluid flow, heat transfer, and material properties across various industries and applications.

⚠️ Important Notes

Temperature Dependence: Viscosity varies significantly with temperature.
Pressure Effects: High pressure can affect viscosity values.
Unit Consistency: Ensure consistent units in calculations.
Material Properties: Different materials have different viscosity ranges.

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