Plumbing Calculators
Pick the right tool: pipe and fittings, water heater sizing, fixture units, or drain pipe sizing
Pipe & Fittings
Estimate copper, PEX, CPVC, or PVC pipe runs with fittings and consumables. Material-aware sizing and itemized cost.
Water Heater Sizing
Tank or tankless. Recommends gallons or GPM by household size, fuel, and efficiency — plus annual operating cost.
Fixture Units (DFU / WSFU)
Drainage and water supply fixture units for toilets, sinks, showers, tubs, dishwashers, and washers. Sizes pipe accordingly.
Drain Pipe Sizing
Size DWV main, branch, vent, and floor drains. Estimates PVC pipe, fittings, and primer/cement cost.