Volumetric Flow Rate using Poiseuille’s Equation Calculator

Poiseuille’s Flow Rate Calculator

Calculate the volumetric flow rate using: $$ Q = \frac{\pi\,\Delta P\,r^4}{8\,\mu\,L} $$

* Enter the pressure difference $ \Delta P $ (Pa), pipe radius in millimeters (mm), dynamic viscosity $ \mu $ (Pa·s), and pipe length $ L $ (m).

Step 1: Enter Parameters

Pressure Difference, $ \Delta P $ (Pa):

e.g., 5000 Pa

Pipe Radius, $ r $ (mm):

e.g., 50 mm (will be converted to meters)

Dynamic Viscosity, $ \mu $ (Pa·s):

e.g., 0.001 Pa·s (for water)

Pipe Length, $ L $ (m):

e.g., 10 m