Energy Engineering Calculators
Select a module below to begin your analysis.
Technical Note: Calculations are based on Hydraulic Institute Standard 20.3 (Achievable Efficiency).
Specific Speed ($N_s$) is calculated per stage. The efficiency shown assumes standard commercial surface
roughness and water at 20°C. For viscous fluids or small pumps (under 100 GPM), additional
Correction Factors ($C_h$, $C_q$, $C_{\eta}$) may apply.