Pipe Velocity Calculator

Calculate average velocity through a full circular pipe from flow rate and inside diameter.

Inputs

Results

Flow area
Velocity
Velocity

Equation

A = πD² / 4
V = Q / A = 4Q / (πD²)

Velocity is based on the actual inside diameter and average volumetric flow through a full circular pipe. This tool does not account for multiphase flow, compressibility, or a partially full pipe.