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Irrigation Runtime Calculator — Inches per Week to Minutes per Zone
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Calculated result
50 min per watering
150 min total runtime/week
3 watering events/week
Assumed application efficiency: 80%
Show the working
- 1. Ideal hours = 1 in ÷ 0.5 in/hr = 2 hr.
- 2. Adjust for 80% efficiency and convert to minutes = 150 min/week.
- 3. Divide across 3 events = 50 min/event.
Runtime is a water-depth conversion, not a watering prescription. Weather, soil infiltration, slope, restrictions, plant needs and sprinkler uniformity can require cycle/soak or different scheduling.
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