Irrigation Zone Calculator
Calculate the number of sprinkler heads, flow rate, run time, and pipe size for an irrigation zone.
Inputs
sq ft
PSI
ft
GPM
Results
Heads Needed
14 heads
Zone Flow Rate
28 GPM
Run Time (1 in/week)45 min
Weekly Water Usage1,246 gal
Pipe Size4 (1=3/4", 2=1", 3=1.25", 4=1.5")
How to Use This Calculator
- Enter the total landscape area in square feet to be irrigated.
- Set the precipitation rate (in/hr) of your sprinkler or drip system.
- Input available water pressure (PSI) and flow rate (GPM) from the meter.
- Review zone count, run time per zone, and weekly water schedule.
- Program your controller with zone run times based on plant water demand and local ET.
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