Pipe Volume Calculator

A pipe volume calculator finds the internal fluid volume of a cylindrical pipe from its inner diameter and length. Used in plumbing, HVAC, and chemical engineering

The calculator uses the standard published formula for pipe volume. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, litres. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Volume = π × (d/2)² × length. Each step in the calculation is shown so you can verify the result manually.