Evapotranspiration Calculator — Daily Water Loss
Estimate daily water loss from your garden based on weather conditions.
How We Calculate This
This uses a simplified ET estimation based on temperature, humidity, wind, and sun exposure.
Base ET = 0.5 + (Temperature - 10) × 0.15 mm/day, adjusted for humidity, wind, and sun factors.
Daily water loss in litres = ET (mm) × Area (m²). 1mm over 1m² = 1 litre.
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates based on standard gardening guidelines. Results may vary with soil conditions, climate, and plant varieties.