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.

This useful water flow through pipe calculator is a powerful tool designed to determine the volumetric flow rate of water through a pipe, based pipe diameter, fluid velocity, and pressure.

Oct 17, 2025 · A free online tool to easily calculate the volumetric flow rate in a pipe. Enter the inner diameter and velocity to instantly find the flow rate.

Definition: This calculator computes the volumetric flow rate (Q) and total volume (V) of water flowing through a pipe, based on the pipe's diameter, water velocity, pipe length, and fluid density.

Calculate exact flow rates in seconds. Just enter your pipe size and pressure - get GPM, velocity, and everything you need for proper sizing.

Definition: Flow rate (Q) is the volume of fluid that passes through a given surface per unit time. Purpose: This calculator helps engineers, plumbers, and fluid system designers determine the …

Use this Flow Rate Calculator to determine the flow rate in a pipe based on pipe diameter, pressure drop, and fluid properties. This calculator helps in designing efficient pipe systems. Flow rate is the …

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. Suitable for engineering, HVAC, plumbing, …

Whether you’re working with PVC pipes, steel pipes, or other materials, our calculator helps you determine the flow rate accurately, making it easier to plan your pipe systems and avoid costly …

Use the pipe flow rate calculator to plug in diameter, velocity, and instantly get the flow rate in your desired units. Imagine water flowing through a circular pipe: