Hydraulic engineering toolbox
11 free calculators for pipe sizing, surge analysis, dosing and head loss — built on standards-aligned methods, ready to drop straight into your design workflow.
Min flowrate
Max flowrate
Fluid type
Pipe Sizing Calculator
Velocity-based sizing for water, wastewater and sludge pipelines.
System Head Calculator
Total system head for pump selection from static lift and friction losses.
Pipe Head Loss Calculator
Darcy-Weisbach friction loss with Colebrook-White friction factor, velocity and Reynolds number.
Chlorine Dosing Calculator
Feed rate and CT compliance checks for disinfection dosing.