Fluid Flow Calculator

How the Calculator Works

This calculator uses the continuity equation for incompressible fluids:

Q = A × V
  

Where:
• Q = Flow rate (m³/s)
• A = Cross‑sectional area of pipe (m²)
• V = Fluid velocity (m/s)

The pipe area is computed using:

A = π × (D² / 4)
  

Example

Velocity: 3 m/s  
Diameter: 0.2 m  

Possible Output:
Flow Rate = 0.0942 m³/s