Pump & Motor Estimator

Calculate flow rate, RPM, displacement, and horsepower for hydraulic pumps and motors

Input Parameters

Equipment Type

Displacement (in³/rev)

RPM

Flow Rate (GPM)

Pressure (PSI)

Horsepower (HP)

Torque (lb-ft)

Efficiency (%)

Enter at least two parameters to calculate the missing values

Flow Rate: (Displacement × RPM) / 231

Displacement: (Flow Rate × 231) / RPM

RPM: (Flow Rate × 231) / Displacement

Horsepower: (Flow Rate × Pressure) / (1714 × Efficiency)

Torque: (Displacement × Pressure) / (2π × Efficiency)

Pressure: (Horsepower × 1714 × Efficiency) / Flow Rate