// multi-utility computation suite · offline · instant · precise
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eng.pump-system-curve Calculator
Calculates the pump system curve from static head, friction losses, and minor losses, and finds the duty point where the system curve intersects the pump curve. The system curve is quadratic (H = Hs + Rq²) — changing pipe diameter shifts the resistance coefficient R and moves the operating point.
Inputs
Static Head M
Reference formula or conversion factor shown for context.
Pipe Friction Factor
A multiplier applied in the calculation.
Pipe Length M
Linear measurement. Ensure consistent units: 1 m = 1,000 mm = 3.281 ft.
Pipe Diameter Mm
Internal diameter of the pipe. Larger diameter reduces velocity and pressure drop but increases material cost.
Flow Rate L S
Volume of fluid per unit time. Used to size pipes, pumps, and ducts.
Results
system head H_sys (m)
Reference formula or conversion factor shown for context.
friction head loss hf (m)
The decrease or degradation from the baseline.
flow velocity (m/s)
Reference formula or conversion factor shown for context.