Plumbing Pipe Calculator
Calculate pipe length, material quantity, and cost for any plumbing run.
Pipe Runs
10% simple runs, 15–20% complex with many fittings
Total Pipe Needed
87 ft
75 ft runs + 15% waste = 4 sticks
Base Run Length
75 ft
With Waste
87 ft
Sticks Needed
4 × 25ft
Pipe Size
3/4"
Estimated Material Cost
$87
Pipe: $65 · Fittings (est.): $23 · labor not included
Get Licensed Plumber Quotes
AI Command Lab connects you with licensed plumbers in your area.
Frequently Asked Questions
What pipe size do I need for a water supply line?
Main supply lines use 3/4-inch pipe; branch lines to fixtures use 1/2-inch. For larger homes or high-demand fixtures (shower + laundry simultaneously), 1-inch mains are recommended to maintain pressure.
How much pipe do I need for a plumbing project?
Measure the total linear footage of runs, add 10–15% for fittings and waste. Include horizontal runs, vertical drops, and any offsets. Always buy in standard lengths (10 or 20 ft) and add at least one extra stick.
What is the difference between PEX, CPVC, and copper pipe?
PEX is flexible, freeze-resistant, and fastest to install ($0.50–$2/ft). CPVC is rigid, chemical-resistant, and cheaper than copper ($0.50–$1.50/ft). Copper is long-lasting and reliable but expensive ($3–$8/ft). PEX dominates new residential construction.