Pump Affinity Laws Calculator

Calculate new flow, head, and power when changing pump speed or impeller diameter using affinity law relationships.

Flow rate at original conditions.
L/s
Head at original conditions.
m
Power at original conditions.
kW
Pump speed at original conditions.
rpm
New pump speed.
rpm

Results

New Flow Rate-L/s
New Head-m
New Power-kW
Speed Ratio-
References: Hydraulic Institute Standards; Karassik — Pump Handbook