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Both calculators run independently — change the inputs on either side to compare results.
Engineering
Pump Power & Efficiency Calculator
Find the shaft power (kW) needed to drive a pump given flow rate, head, fluid density, and combined pump-motor efficiency. Use it when selecting motors or verifying energy consumption for water supply, HVAC, or process systems.
Fill in the required fields to see your result.
Engineering
Pump Head & Power Calculator
Calculates the brake horsepower a pump motor must deliver to move a fluid at a given flow rate against static head and pipe friction losses. Use it when selecting pumps for irrigation, HVAC, chemical processing, or water supply systems.
Fill in the required fields to see your result.
Key differences
| Pump Power & Efficiency Calculator | Pump Head & Power Calculator | |
|---|---|---|
| Category | Engineering | Engineering |
| Inputs required | 5 | 5 |
| Result | Motor Power Required (kW) | Brake Horsepower Required (HP) |
| What it does | Find the shaft power (kW) needed to drive a pump given flow rate, head, fluid density, and combined pump-motor efficiency. Use it when selecting motors or verifying energy consumption for water supply, HVAC, or process systems. | Calculates the brake horsepower a pump motor must deliver to move a fluid at a given flow rate against static head and pipe friction losses. Use it when selecting pumps for irrigation, HVAC, chemical processing, or water supply systems. |