Pipe Volume Calculator

What Is a Pipe Volume Calculator?

A pipe volume calculator finds the internal capacity of a cylindrical pipe and the mass of liquid it can hold. Enter inner diameter and length to get volume in cubic meters, liters, gallons, and cubic feet, plus liquid weight from density.

Pipe Volume Formula

A pipe is a hollow cylinder. Internal volume uses the inner radius:

$$\text{volume} = \pi \times r^2 \times L$$

where $r$ is inner radius and $L$ is pipe length. Liquid mass:

$$\text{mass} = \text{volume} \times \text{density}$$

Water density is about 997 kg/m³. For flow rate planning, use the Gallons Per Minute Calculator or Liters Per Minute Calculator.