Mechanical Engineering · Calculator

Pump Power Calculator

Calculate hydraulic pump power from flow rate, pressure rise and pump efficiency.

Enter your values

Use the units shown and enter valid values.

Enter a numeric value.
Choose the unit or option.
Enter a numeric value.
Choose the unit or option.
Enter a numeric value.
Choose the unit or option.

Calculation Result

Results are calculated from your inputs.

Enter your values and select Calculate to see the result.

How It Works

Calculate hydraulic pump power from flow rate, pressure rise and pump efficiency.

Pump Shaft Power = Q × ΔP ÷ Efficiency

Use the result as an engineering calculation aid and verify critical designs against applicable standards and manufacturer specifications.

How to use this calculator

What to enter

Enter or select the following as requested: Flow rate; Flow unit; Pressure rise; Pressure unit; Pump efficiency (%); Power result unit. Follow the units, valid ranges, examples, and options displayed beside each field.

What the result means

The engineering result is calculated from the dimensions, loads, material properties, flow conditions, or operating values entered. Check the unit system, material assumptions, boundary conditions, safety factor, and whether the model represents static, dynamic, or ideal conditions.

When to use it

Use this for preliminary engineering calculations or to check a worked problem. Verify assumptions and applicable design standards with a qualified engineer before using the result to design, size, or operate load-bearing or safety-critical equipment.