Plumbing Calculators
Professional plumbing engineering tools for water supply, drainage, pump selection, and system design per IPC/UPC standards.
Most used in Plumbing
All 19 Plumbing calculators
Water Supply PipeSize water supply pipes based on flow and velocityWater Pipe Pressure DropCalculate pressure loss in water piping systemsDrainage Slope CalculatorCalculate drainage pipe slope and fallRainwater Pipe SizeSize rainwater downpipes and guttersPump Head CalculatorCalculate total dynamic head for pumpsPump HorsepowerCalculate pump motor power requirementsPipe Support SpacingHanger spacing and rod size per MSS SP-58, NFPA 13 and IPCMedical Gas Pipe SizingCopper pipe size for oxygen, medical air and vacuum (NFPA 99 / HTM 02-01)Pipe Expansion & LoopThermal expansion and expansion loop size for metal and plastic pipeSeptic Tank SizeSeptic tank volume by users or bedrooms, with dimensionsWater Tank CapacityLitres and gallons in rectangular and cylindrical tanks, and tank size from demandWater Pump NPSHCalculate Net Positive Suction HeadChilled Water FlowCalculate CHW flow rates based on cooling loadFixture Unit CalculatorCalculate WSFU and drainage fixture unitsHot Water DemandCalculate hot water demand for buildingsGrease Trap SizingSize grease interceptors for commercial kitchensSewage Pump StationDesign sewage lift stations and wet wellsWater HammerCalculate pressure surge from water hammerExpansion TankSize expansion tanks for hydronic systems
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Professional Plumbing Tools
Our plumbing calculators help engineers design efficient water supply and drainage systems following international plumbing codes.
Water Supply Design
Size domestic water pipes, calculate pressure drops, and determine fixture unit loads for residential and commercial buildings.
Pump Selection
Calculate total dynamic head, pump horsepower, and NPSH requirements for water booster and transfer pump systems.