Pipe Size Calculator

Determine optimal pipe diameter based on flow rate and velocity requirements

Input Parameters

Recommended: 1.5-3.0 m/s for water

Results

Enter values and click "Calculate Pipe Size" to see results.

How to Use

Enter the required flow rate and desired velocity. The calculator will determine the minimum pipe diameter needed.

Formula: D = 2 × √(Q / (π × v))
Where:
D = Pipe diameter (m)
Q = Flow rate (m³/s)
v = Velocity (m/s)

Standard Pipe Sizes (mm)

15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500