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Both calculators run independently — change the inputs on either side to compare results.

Pipe Flow Reynolds Number Calculator

Computes the Reynolds number for flow inside a pipe to classify the flow as laminar, transitional, or turbulent. Essential for friction factor selection, heat transfer design, and mixing analysis.

Fluid Velocity (m/s)

Pipe Diameter (m)

Fluid Density (kg/m³)

Dynamic Viscosity (Pa·s)

Fill in the required fields to see your result.

Fluid Mechanics

Pipe Network Flow Distribution Calculator

Distribute flow between two parallel pipes based on their diameters, lengths, and roughness using Hardy-Cross principles. Useful for engineers balancing water distribution networks and designing parallel pipe systems.

Total Inflow (m³/s)

Pipe 1 Diameter (m)

Pipe 2 Diameter (m)

Pipe 1 Length (m)

Pipe 2 Length (m)

Pipe Roughness

Fill in the required fields to see your result.

Key differences

	Pipe Flow Reynolds Number Calculator	Pipe Network Flow Distribution Calculator
Category	Fluid Mechanics	Fluid Mechanics
Inputs required	4	6
Result	Reynolds Number	Flow in Pipe 1 (m³/s)
What it does	Computes the Reynolds number for flow inside a pipe to classify the flow as laminar, transitional, or turbulent. Essential for friction factor selection, heat transfer design, and mixing analysis.	Distribute flow between two parallel pipes based on their diameters, lengths, and roughness using Hardy-Cross principles. Useful for engineers balancing water distribution networks and designing parallel pipe systems.