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All 6 plumbing & piping calculators
Fixture Unit Sizing Calculator
Converts drainage or water fixture units to peak demand and a recommended pipe size. Use it for a first-pass plumbing pipe sizing.
Natural Gas Pipe Sizing Calculator
Sizes natural-gas pipe by the longest-length method from the required capacity in cubic feet per hour and the allowable pressure drop. Use it for a first-pass gas pipe sizing.
Pipe Expansion Support Calculator
Computes thermal expansion, guided-cantilever loop sizing and support spacing by stress and deflection. Use it for pipe expansion and support layout.
Pipe Pressure Drop Calculator
Computes pipe pressure drop and head loss by Darcy-Weisbach with the Colebrook friction factor, alongside Hazen-Williams, with velocity and Reynolds number. Use it to check a liquid pipe run.
Pump Head Power Calculator
Computes total dynamic head, hydraulic and brake power and the NPSH margin for a pump, with the system curve. Use it to select and check a pump.
Tank Volume Calculator
Computes full and partial volume for horizontal and vertical tanks with various heads, and a dip chart. Use it to gauge tank contents.