Piping

Pipe Sizing Calculator

Calculate optimal pipe sizes based on flow rate, fluid velocity, and allowable pressure drop. Uses the Darcy-Weisbach equation.

Inputs

Flow Rate(m³/h)

Volumetric flow rate of the fluid

Fluid Density(kg/m³)

Density of the process fluid at operating conditions

Max Allowable Velocity(m/s)

Typical: 1–3 m/s for liquids, 15–30 m/s for gases

Pipe Length(m)

Straight pipe length (add equivalent length for fittings)

Pipe Roughness (ε)(mm)

Surface roughness: CS ≈ 0.046 mm, SS ≈ 0.015 mm

Results

Enter values and click Calculate

Disclaimer: Results are indicative only and must be independently reviewed, verified, and validated prior to use. Outputs shall be checked against applicable codes, standards, and project specifications. Any corrections required should be reported to admin@infipro.com.au.