Calculate hydraulic power and required shaft (motor) power for a pump given flow rate, total head, and efficiency.
Pump Power & Head Calculator
Inputs
Results
- Hydraulic Power
- 4.09kW
- Required Shaft Power
- 5.84kW
- Required Shaft Power
- 7.83HP
Formula Used
⚠ For preliminary design and educational use only. Verify all results against applicable codes and standards before use in production or safety-critical applications.
About this calculator
Part of our Thermal & Fluids Calculators collection. Heat transfer, pipe flow, Reynolds number, and thermodynamic cycles.
How it works
Calculates hydraulic power (water horsepower), required shaft power accounting for pump efficiency, and total dynamic head from flow rate, head, and fluid density.
Enter your values in the inputs above and click CALCULATE. Results appear on the right without a page reload. No login and no server upload.
Privacy and accuracy
Every calculation runs locally in your browser. Your design data never leaves your device. Results are intended for preliminary engineering work. Always verify critical designs with qualified review and applicable standards before production use.
Related tools
Pipe Flow Pressure Drop Calculator
Darcy-Weisbach pressure drop with Reynolds number and friction factor.
Open calculator →Hydraulic Cylinder Force Calculator
Extend and retract forces from hydraulic pressure and cylinder geometry.
Open calculator →Reynolds Number Calculator
Reynolds number and flow regime for pipe, flat plate, or sphere geometry.
Open calculator →