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Water Evaporation Loss Calculator
Estimate the water lost per day from a pool or pond surface by evaporation.
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Evaporation rate
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Estimate the water lost per day from a pool or pond surface by evaporation.
Water Evaporation Loss Estimator
Enter your numbers below for an instant estimate.
0
π‘ Tip: Evaporation depends on the vapour pressure gap, wind and area; covers reduce loss.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Water Quick Guide
Typical values for reference.
| Area m2 | Temp C | Wind m/s | mm/day |
|---|---|---|---|
| 32 | 15 | 2 | 76.1 mm/day |
| 32 | 20 | 2 | 104.3 mm/day |
| 32 | 26 | 2 | 149.9 mm/day |
| 32 | 30 | 2 | 189.2 mm/day |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Water Evaporation Loss Calculator FAQ
Answers to common questions about this calculator.
Typically 3 to 10 mm a day in warm, dry weather.
Use a cover and add windbreaks.
Evaporation depends on the vapour pressure gap, wind and area; covers reduce loss.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.