WaterCalcLabIrrigation Water Calculator
Convert a chosen net application depth into gross water volume with an explicit efficiency.
Your result
Bars compare only results in the same unit group. They are normalized, not a time-series forecast.
Planning result based on your inputs.
How this tool works
Convert a chosen net application depth into gross water volume with an explicit efficiency.
Vnet = area × depth; Vgross = Vnet/ηExample calculation
The prefilled form is a worked example. Its base-unit inputs and expected outputs are shown below; use the reset button to restore it.
| Input | Example |
|---|---|
| Area | 100 |
| Target net water depth | 20 |
| System efficiency (separate losses) | 0.9 |
Frequently asked questions
How should I choose the inputs?
Use measurements and local records for the stated period. All preset values are illustrative examples, not recommendations.
What does this result leave out?
Depth must be selected from local crop and soil needs. This conversion does not establish the correct irrigation dose.
Continue your plan
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An area-based water volume is only the beginning. A working plan also needs outlet placement, operating pressure, flow, runtime and a watering window. Draw the route from source to each zone and note elevation changes. A calculator can produce a correct volume while the installation still fails to distribute it to the plants that require it.
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Method version 1.0 · Last reviewed: 2026-10-10