Pivot Irrigation Calculator

Calculate center pivot coverage area, application depth, GPM/acre, and peak demand capacity.

Pivot length (ft)

End gun throw (ft)

System flow (GPM)

Revolution time (hrs)

Application efficiency (%)

Peak crop ET (in/day)

Tab to move between fields

Total area (acres)

125.7

Application depth (in)

1.01

Base area (acres)125.7

End gun area (acres)0

Daily capacity (in/day)0.34

GPM per acre6.37

Outer tower speed (ft/min)1.92

Meets peak demand (1=yes)0

Gross Application (in)1.06

How to Use This Calculator

Enter pivot length in feet from center to last tower (1/4 mile = 1,320 ft).
Set system flow rate in GPM and revolution time in hours.
Enter end gun throw distance in feet (0 if no end gun).
Input application efficiency (%) and peak crop ET in inches per day.
Review Total area (acres), Application depth (in/revolution), and whether the system meets peak demand.

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