Pipe Flow Calculator

Calculate flow rate, velocity, Reynolds number, and pressure drop in pipes

Pipe Parameters

Internal diameter of the pipe
Total length of pipe

Fluid Properties

Flow Condition

Volume of fluid flowing per unit time

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About This Calculator

This calculator uses the Darcy-Weisbach equation to determine pressure drop in pipes. The friction factor is calculated using the Swamee-Jain approximation of the Colebrook equation.

Flow Regimes:
Re < 2300: Laminar
2300 < Re < 4000: Transitional
Re > 4000: Turbulent