Flow / velocity / diameter (sizing)
Solve for flow, velocity or diameter (Q–v–D) with unit conversion, recommended limits, tables and CSV export.
Hydraulics
Pipe flow calculators: velocity, head loss, diameter and flow rate.
Pipe head loss calculator (Darcy–Weisbach)
Multi-segment head loss with Darcy–Weisbach, scenario comparison, diameter optimization and CSV export.
Fluid mixing: final temperature, concentration & density
Mix multiple streams and compute final temperature, concentration and approximate density. Includes target mode and CSV export.
Open channel flow (Manning): normal & critical depth
Compute normal and critical depth with Manning, Froude number, specific energy, curves and CSV export.