Calculate the internal volume of a pipe using its diameter and length. Get instant results in liters, gallons, cubic feet, and cubic meters.
Enter the pipe inside diameter and pipe length below. This tool calculates the approximate volume or capacity inside the pipe.
A pipe volume calculator helps you estimate how much liquid, air, or material can fit inside a pipe. It is useful for plumbing, irrigation, construction, drainage, water systems, engineering work, and DIY projects.
This calculator uses the inside diameter of the pipe, not the outside diameter. For the most accurate result, always use the internal pipe diameter.
Estimate water capacity in pipes for home plumbing, tanks, and drainage systems.
Calculate pipe capacity for garden watering, farming, and irrigation layouts.
Use it for liquid flow planning, pipe sizing, and system capacity estimates.
The pipe volume is calculated using the cylinder volume formula because the inside of a pipe is shaped like a cylinder.
First, the calculator converts your diameter and length into meters. Then it divides the diameter by 2 to get the radius and calculates the internal volume of the pipe.
To use this tool, enter the pipe’s inside diameter, select the diameter unit, enter the pipe length, and select the length unit. After clicking calculate, the tool converts everything into meters and calculates the pipe capacity.
The result is displayed in multiple common units, including liters, US gallons, cubic meters, and cubic feet, so you can use the value for different types of projects.
You should use the inside diameter of the pipe. Using outside diameter can make the result higher than the real internal capacity.
Yes. The calculator shows the result in US gallons along with liters, cubic meters, and cubic feet.
Yes, in most practical cases, pipe volume and pipe capacity both describe how much space is available inside the pipe.
Yes. This tool is useful for water pipes, irrigation pipes, drainage pipes, and other cylindrical pipe systems.