TryBuildCalcPlumbing
Plumbing calculators for water storage and practical planning.Explore plumbing calculators for water tank capacity, pipe volume, fill-level checking, stored-water estimation, and related planning tasks used in homes, buildings, and site services.
Septic Tank Size Calculator
Estimate septic tank capacity, sludge storage, and dimensions
Water Tank Capacity Calculator
Estimate tank volume, fill level, liters, gallons, and fill time
Rainwater Harvesting Calculator
Estimate roof rainwater yield, tank size, overflow, and demand coverage
Pipe Sizing by Fixture Units Calculator
Size a water supply pipe from fixture units (WSFU), demand flow rate, and velocity
Drain Pipe Slope Calculator
Calculate drain pipe fall/slope, check code-minimum slope, and look up DFU drainage capacity
Pipe Volume Calculator
Calculate pipe volume, liters per meter, quantity, and fluid weight
Water Pump / Pressure Booster Sizing Calculator
Size a booster or well/transfer pump by Total Dynamic Head, flow rate, and motor horsepower
Water Heater Sizing Calculator
Size a storage tank water heater by First Hour Rating or a tankless unit by GPM and BTU/hr