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Drip Irrigation Calculator

Size a drip-irrigation run for a garden bed. Work out the water a runtime delivers, or the runtime needed to meet a weekly water budget. Enter the number of emitters and each emitter's flow rate, the bed area and either a runtime or a target watering depth, and the tool returns total volume, the depth applied over the bed, and the weekly schedule. Useful for vegetable beds, drip lines and container gardens — drip's low flow means runs are long but water reaches the root zone with little loss. Pure arithmetic — actual demand depends on climate, crop, soil, mulch and stage of growth, so treat the depth target as a starting point and adjust. Everything runs locally in your browser.

Emitters

gph

Bed

sqft
in / week
min