Garden Drip Irrigation Water Usage Calculator
Drip irrigation is efficient, but usage adds up across zones and a full growing season. Enter your system details below to see exactly how many gallons you're using and what it costs.
Total Seasonal Water Cost
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Gallons per session—
Gallons per week—
Gallons per season—
Total seasonal cost—
About this calculator
Estimate how much water your drip irrigation system uses per session, per week, and per season, plus the resulting cost based on your zones, emitter flow rate, and run time.
Frequently Asked Questions
How do I find my emitter's flow rate?
It's usually printed on the emitter or listed on the packaging, commonly 0.5, 1, 2, or 4 gallons per hour (GPH).
Does this account for evaporation or runoff?
No, this calculates raw water delivered by the system based on emitter specs and run time, not soil absorption efficiency.
How can I reduce water usage?
Lower minutes per session, reduce session frequency, use lower-flow emitters, or water during cooler parts of the day to reduce evaporation losses.