Use the pipe flow calculator to find the velocity and discharge of water in a gravity-fed pipe flow.

This pipe flow rate calculator calculates the volumetric flow rate (discharge rate) a gas or fluid (liquid) going through a round or rectangular pipe of known dimensions.

It offers detailed technical data and calculations for various fields such as fluid mechanics, material properties, HVAC systems, electrical engineering, and more.

A Mannings Formula pipe flow calculator for square and circular pipes. Solve for part full pipe flows, or size a pipe with a known design flow.

Calculate flow rates, pressure drops, velocity and more for fluid flow in pipes. Now with system curve analysis and local resistance calculations.

Calculate pipe flow with our Pipe Flow Calculator. Easily determine flow rate, head loss, and velocity for any application.

Calculate water flow rates through pipes of various sizes and determine velocity, pressure requirements, and system performance. Available in both Imperial and metric units.

What is a Pressure Pipe Flow Calculator? Definition: This calculator determines the flow velocity and flow rate in a pipe based on pressure difference, fluid density, and pipe cross-sectional area.

Our pipe flow calculator helps determine the correct pipe size based on volumetric flow rate and velocity, making it ideal for both liquid and gas flow applications.

Nov 27, 2025 · Enter pipe dimensions, fluid properties, and flow conditions below to calculate pressure drop and velocity instantly. Use the input fields to specify pipe diameter, length, fluid properties, and …