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Toolbox / IrrigationIrrigation · FREE CALCULATOR

Drip emitter water use

Total specified emitter flow and water used over a run.

Quantity / scenario planning · Reviewed 7 October 2026

Your inputs

Check all starting values against your project and product. Enter your own prices; keep costs on the same GST basis.

MEASURE FIRST

How to prepare your inputs

Measure each irrigation zone and verify total installed flow. Enter your own target applied depth.

How this calculation works

Total flow = emitter count × flow per emitter. Run volume = total flow × minutes ÷ 60.

Worked example

100 emitters at 2 L/hour running 30 minutes use 100 L.

Assumptions & exclusions

Assumes each emitter delivers the entered flow at actual pressure. Does not select pipe diameter, assess pressure losses or recommend watering duration.

Your next step

Check coverage uniformity, soil infiltration, pressure, plant requirements and local watering rules with an irrigation specialist.

Further reading

  • Hunter irrigation technical handbook

These resources provide background information. Confirm current product specifications and project requirements with your supplier or trade professional.

What if my shape or product is different?

Use dimensions and product data that match the stated method. For complex work, calculate separate sections or obtain a project-specific take-off. Do not apply simple geometry to structural or compliance decisions.

Why are quantities rounded up?

Whole bags, packs, sheets or cartridges round up to purchasable units. Decimal area or volume results are planning figures; confirm order increments with the supplier.

Are my entries saved?

No. Entries remain in the current browser page and clear on reload. Printing can save your results and inputs as a PDF on your device.

Keep planning

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