This viscosity converter relates dynamic viscosity, kinematic viscosity, and fluid density using SI-consistent base units.
Physics
Poise-Stokes Converter
Relate dynamic viscosity, kinematic viscosity, and fluid density using SI-consistent units.
Calculator
About this calculator
Formula notes
kinematic = dynamic / density; dynamic = kinematic x density; density = dynamic / kinematic. Base units are Pa*s, m2/s, and kg/m3.
Worked examples
- Example: 1 cP dynamic viscosity in water at 1000 kg/m3 gives 1 cSt kinematic viscosity.
- Water at 1000 kg/m3 with 1 cP dynamic viscosity has 1 cSt kinematic viscosity.
How to use it
- Choose whether to solve for kinematic, dynamic, or density.
- Enter the two known values with their units.
- Read all three quantities in SI and common viscosity units.
Frequently asked questions
What is the relationship between the three quantities?
Kinematic viscosity equals dynamic viscosity divided by density, in consistent SI units.
Which density units are supported?
kg/m3, g/cm3, lb/ft3, and oz/in3.
Limits and interpretation
- The relationship is exact only when all values use consistent SI base units; the tool converts selected units first.
- It models Newtonian fluids; non-Newtonian behavior is not captured.