PEX Pipe Calculator

Estimate PEX pipe length, coil length, fittings, crimp rings, clamps, valves, manifolds, supports, waste factor, and total PEX plumbing material cost for water supply, remodels, repairs, and repipe projects.

Calculate PEX Pipe

Total PEX Length = Main Run Length + Branch Length + Waste Factor.
Your result will appear here.

How the PEX pipe calculator works

PEX length:
The calculator adds main run length, branch length, and waste factor.

Coils or sticks:
The calculator rounds up to the number of coils or sticks needed based on coil length.

Fittings cost:
The calculator adds elbows, tees, couplings, valves, rings, clamps, manifolds, supports, and miscellaneous supplies.

Total cost:
The calculator adds PEX pipe cost, fittings, supplies, markup, and sales tax.

Why use a PEX pipe calculator?

A PEX pipe calculator helps estimate pipe length and material cost before buying supplies for a plumbing project.

It can help compare PEX type, pipe diameter, pipe length, cost per foot, fittings, valves, manifolds, clips, waste factor, markup, tax, and total project material cost.

What your result means

Your result is an estimated PEX pipe material cost and quantity list. This is a planning estimate only. Actual material needs depend on routing, fixture count, local code, fitting type, pipe diameter, tool system, supplier pricing, and jobsite conditions.

PEX pipe formulas

Frequently asked questions

How do you calculate PEX pipe needed?

Add the main runs and branch runs, then add a waste factor for bends, routing changes, extra cuts, and mistakes.

How much PEX waste should I add?

A common planning range is 5% to 15%, but complex layouts, remodels, long fixture runs, and whole-house repipes may need more.

What affects PEX pipe cost?

PEX cost depends on pipe type, diameter, coil length, fitting system, valves, manifolds, supports, local pricing, and tool requirements.

Is this PEX pipe calculator exact?

No. This calculator gives a planning estimate. Final material needs should be checked against the actual plumbing layout, fixture count, pipe routing, and local code requirements.