New in Version 3.0
Plumbing Calculators
Ten practical calculators with clear formulas, examples, and smart result tools.
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Popular Plumbing Calculators
Start with these useful tools or browse all 26 Plumbing calculators below.
Drain Pipe Slope Calculator
Calculate or estimate drain pipe slope in seconds.
Drain Slope Drop
Calculate or estimate drain slope drop in seconds.
Expansion Tank Size Estimator
Calculate or estimate expansion tank size estimator in seconds.
Faucet Water Usage Calculator
Calculate or estimate faucet water usage in seconds.
Fixture Unit Demand
Calculate or estimate fixture unit demand in seconds.
Grease Trap Size Calculator
Calculate or estimate grease trap size in seconds.
Pipe VolumeOpen calculator →Water Flow VelocityOpen calculator →Fixture Unit DemandOpen calculator →Water Heater RecoveryOpen calculator →Drain Slope DropOpen calculator →Pump HorsepowerOpen calculator →Tank Fill TimeOpen calculator →Pipe Weight WaterOpen calculator →Rainwater CollectionOpen calculator →Pressure HeadOpen calculator →