PVC Pipe Calculator (Outside and Inside Diameter)

Here you can calculate the wall thickness, weight per foot, rated pressure, outside diameter, and inside diameter of PVC pipe.

To calculate the minimum slope of a drain pipe, click here.

pvc pipe dimensions and diameters



pvc pipes
Photo by BrianNorcross

How To Use This Calculator

First, choose the type of PVC pipe you’d like to look up (Schedule 40, 80, or 120).

Then, choose the nominal size of the pipe in question and hit calculate to get it’s characteristics.

Note that nominal size is only loosely based on the actual inside diameter of the PVC pipe. It is basically just used as an identifier.

What Does Schedule 40/80/120 Mean?

Schedule is another term for pipe wall thickness. The higher the Schedule, the thicker the wall of the pipe. The Schedule system was created in 1927 and is used on many different types of piping aside from PVC.

No matter what Schedule PVC pipe you have, the outside diameters of two same nominal size pipes will be the same. For example, a Schedule 40, 80, and 120 1″ nominal pipe all have an outside diameter of 1.315″.

Schedule 40 PVC piping is most commonly used in residential applications, for things like sewer drain lines and vent pipes. ABS pipe is another common type of plastic pipe used in these applications. To see the differences of ABS pipe and PVC pipe, check out this article.

Schedule 80 and 120 PVC piping is most often used in commercial and industrial applications where high strength and pressure rating are required.

PVC pipe has become an extremely popular material to use for residential and commercial plumbing. If you’d like to know more on the history of PVC pipe, check out this article.