Well Pump Sizing Calculator
Well Pump Sizing
Calculate the horsepower needed for a residential well pump.
Formula
HP = (GPM x Total Dynamic Head) / (3960 x Efficiency)
Frequently Asked Questions
What HP pump do I need for a 200 ft well?
A 200 ft well typically needs a 0.75 to 1.5 HP submersible pump.
What is total dynamic head?
It is the sum of static level, drawdown, pressure, and friction loss.