Pipe Calculator
Calculate a pipe's inside diameter, internal capacity, material volume, surface area, and estimated weight from its dimensions.
Enter pipe details
Result
Enter the pipe dimensions to calculate capacity and material quantities.
Outside vs inside diameter
Inside diameter equals outside diameter minus twice the wall thickness. It controls the pipe's internal capacity.
Weight depends on density
The same dimensions can produce very different weights when the pipe is made from steel, copper, aluminium, or plastic.
Nominal size can differ
Nominal pipe size is a trade label and may not equal the measured outside or inside diameter, especially for scheduled pipe.
Frequently asked questions
How is inside diameter calculated?
Inside diameter is calculated as outside diameter minus two times the wall thickness.
How is pipe capacity calculated?
The calculator treats the hollow inside as a cylinder. Internal volume equals π times the inside radius squared times the pipe length.
How is pipe weight estimated?
Material volume is the volume of the outer cylinder minus the inner hollow volume. That result is multiplied by the selected material density.
Can I use this for nominal pipe sizes?
Yes, but first enter the actual outside diameter and wall thickness from the relevant pipe schedule or manufacturer data.
Results are estimates generated locally in your browser from standard geometry, material yield and waste assumptions. They are for planning purposes only, not engineering, structural, code or supplier advice. Confirm dimensions, material strength, delivery constraints and local building codes with a licensed professional before purchasing or building. VisionVix accepts no liability for decisions based on this tool's output.
