Pump Head & HP Sizing Calculator

Pump Head & HP Sizing Calculator

Required Flow Rate (Liters per Minute - LPM):

Total Static Head / Vertical Height (Meters):

Total Pipe Run Length (Meters):

Estimated Pump Efficiency (%):

Estimated Motor Efficiency (%):

Sizing & Friction Results

Estimated Friction Loss: 0.0 Meters

Total Dynamic Head (TDH): 0.0 Meters

Theoretical Hydraulic Power: 0.00 kW

Recommended Standard Motor Size

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Pump Sizing Design Guidelines & Formulas:

• Friction Loss Approximation: Estimated as 10% of the total pipe run length (a standard MEP preliminary rule of thumb for fittings and straight runs).
• Total Dynamic Head (TDH) = Total Static Vertical Lift (m) + Estimated Friction Losses (m).
• Hydraulic Power (kW) = (Flow Rate in LPM x TDH in Meters) ÷ 6116.2.
• Brake Horsepower (BHP) = (Hydraulic Power in kW ÷ Pump Efficiency %) x 1.341 (kW to HP conversion factor).
• Recommended Motor HP = (BHP ÷ Motor Efficiency %) x 1.15 (Includes a standard 15% safety overload margin to prevent motor burnout).