Why calculate water volume?

Proper water volume ensures nutrients are evenly distributed and plants stay hydrated without stressing roots.

How do I use this calculator?

Search or pick a crop, enter number of plants, and adjust water per plant (auto-filled by crop). The tool returns daily and weekly totals.

Water Volume Calculator | Hydroponic Tools

Pick a crop (or type to search), enter plant count, and we’ll suggest water per plant automatically — plus daily & weekly totals.

Search Crop/Plant

Tip: Start typing to filter the list below.

Or choose from dropdown

Number of Plants

Water per Plant (liters/day)

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Learn more in our Water Volume Calculator Guide for step-by-step tips and conversion info.