Engineering Calculators

Pump Power Calculator

From the manufacturer's curve or datasheet at the operating point (typically 60-85%).

Default 1000 kg/m³ is plain water.

Formula Reference

Hydraulic Power

Phydraulic=ρ g Q H1000P_{hydraulic} = \dfrac{\rho \, g \, Q \, H}{1000}

Shaft Power

Pshaft=PhydraulicηP_{shaft} = \dfrac{P_{hydraulic}}{\eta}

ρ = fluid density (kg/m³), g = gravitational acceleration, Q = flow rate (m³/s), H = total dynamic head (m), η = pump efficiency (fraction).