Well Pump Size Calculator
Estimate preliminary well-pump total dynamic head, hydraulic power, input horsepower, daily water delivery and energy cost.
Default project preview
1.07 hp
Pressure head
92.3 ft
Hydraulic power
438 W
Input power
0.8 kW
Daily delivery
1,200 gal
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Total dynamic head = vertical lift + pressure head + pipe losses. Hydraulic power = water density × gravity × flow × head. Input power divides by efficiency.
FAQ
Well Pump Size Calculator questions
What is total dynamic head?+
It is the combined lift, required pressure head and friction losses the pump must overcome at the design flow.
Why is well yield important?+
A pump should not remove water faster than the well can reliably produce without excessive drawdown.
Can horsepower alone select the pump?+
No. The pump curve must deliver the required flow at the calculated head.