PlantLogica manages 5 data types including documents. Helps you organize, track, and share your work in 1 place for teams and solo users.

PlantLogica

University

Calculator

Pump Efficiency Calculator

Calculate pump efficiency and wire-to-water efficiency from measured flow, head and power input — to check whether the pump is operating near its best efficiency point.

Interactive toolUpdated July 2026

Inputs

Flow Rate (L/s)

Head (m)

Fluid Density (kg/m³)

Brake Power at Pump (kW)

Shaft power delivered to the pump.

Motor Electrical Input (kW)

Results

Hydraulic Power

1.5 kW

Pump efficiency

70.1%

Wire-to-water

58.9%

How It Works

P_hydraulic = ρ·g·Q·H

η_pump = P_hydraulic / P_brake

η_overall = P_hydraulic / P_motor (wire-to-water)

Compare the result to the pump curve's Best Efficiency Point. A pump more than ~10% off BEP is wasting energy and wearing faster.

Digitise your maintenance with PlantLogica

PlantLogica connects to your equipment sensors via PLC, schedules preventive maintenance, logs work offline by voice in the field, and uses AI to predict failures before they happen.