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Pipe Sizing Tool



How the Calculator Works

This calculator uses the continuity equation for incompressible flow:

Q = A × V
  

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

The pipe diameter is then computed from the area:

A = Q / V  
D = √(4A / π)
  

Example

Flow Rate: 0.025 m³/s  
Velocity: 1.8 m/s  

Possible Output:
Required Pipe Diameter = 0.133 m