Kitchen Plumbing Calculator
Calculate supply and DWV pipe quantities, fixture units, and material costs for kitchen plumbing rough-in.
Inputs
Results
Total fixture units
6.5
Drain pipe size (in.)3
Vent pipe size (in.)2
Total pipe needed (ft)87
Cold supply pipe (ft)27
Hot supply pipe (ft)23
Drain pipe (ft)24
Vent pipe (ft)13
Estimated material cost$259
Fittings cost (included)$60
How to Use This Calculator
- Select the number of sink compartments (1 = single bowl, 2 = double, 3 = triple).
- Toggle Dishwasher, Ice Maker, and Pot Filler to 1 for each appliance being connected.
- Enter the main run length in feet — the distance from your supply/stack to the kitchen fixtures.
- Choose your supply pipe material: 0 = PEX, 1 = CPVC, or 2 = Copper.
- Review Total Fixture Units and Drain Pipe Size to ensure your drain can handle the load.
- Use the Estimated Material Cost to budget for pipe and fittings before hiring a plumber.
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