Pipe Size Calculator — Calculate Optimal Pipe Diameter for Fluid Flow

Pipe Size Calculator

Calculate the optimal pipe diameter for your fluid flow system based on flow rate, pressure drop, and fluid properties. Ensure efficient fluid transport with proper pipe sizing.

Step 1: Fluid Properties

2.5 L/s
1.5 m/s

Optimal Flow Velocity

For water systems: 1-2 m/s is optimal. Lower velocities reduce friction loss but increase pipe size. Higher velocities increase pressure drop and noise.

Step 2: System Parameters

10 kPa/100m

About Pressure Drop

Pressure drop is the reduction in pressure as fluid flows through a pipe due to friction. Higher flow rates, longer pipes, and rougher materials increase pressure drop.

Pipe Size Results

Summary
Material Comparison
Flow Analysis

Recommended Pipe Diameter

40.8 mm
For 2.5 L/s flow at 1.5 m/s velocity
Flow Rate
2.5 L/s
Flow Velocity
1.5 m/s
Pipe Material
PVC
Pressure Drop
4.8 kPa/100m

Pipe Material Comparison

Pipe Material Roughness (mm) Pressure Drop Recommended Diameter

Flow Velocity Analysis

Pipe Size Formula

Diameter = 2 × √(Flow Rate / (π × Velocity))

To calculate pipe diameter: Divide flow rate by the product of π and velocity, take the square root, then multiply by 2. Flow rate should be in m³/s for this formula.

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