Pool Evaporation Loss Calculator
Estimate daily pool water loss from evaporation depth.
Pool Evaporation Loss measurements
Enter your values, then calculate.
Result
How to calculate pool evaporation loss
This calculator estimates daily pool water loss from evaporation, using pool surface area and a daily evaporation depth rate.
How the calculation works
Water loss = Pool surface area × Evaporation depth per day × 0.623, converting square-foot-inches to gallons.
Example
400 sq ft pool surface with 0.25 inches of daily evaporation: 400×0.25×0.623 ≈ 62.3 gallons/day.
Frequently asked questions
How is Result calculated?
Result = [Pool surface area] × [Evaporation per day] × 0.623.
Is the Pool Evaporation Loss Calculator free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Pool Evaporation Loss Calculator
Water loss = Pool surface area × Evaporation depth per day × 0.623, converting square-foot-inches to gallons.
Let's understand your pool evaporation loss result.
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Pool Evaporation Loss
- Evaporation rate varies significantly with temperature, humidity, wind, and pool heating — a heated pool in dry, windy conditions evaporates considerably faster.
- A pool cover can meaningfully reduce evaporation loss, especially overnight when temperature differentials are largest.
Common Pool Evaporation Loss Mistakes to Avoid
- Using a generic evaporation rate without adjusting for your specific climate, pool heating, and whether a cover is used, all of which significantly affect actual loss.
When to Use This Calculator
This calculator estimates daily pool water loss from evaporation, using pool surface area and a daily evaporation depth rate.