Benchmark Pools & Spas
Zip code and a few basics — see today's evaporation estimate in seconds.
ZIP CODE REQUIRED. Your local air temperature, dew point and wind speed are what the estimate is calculated from, so the result stays blank until you enter one.
Pick your shape, then measure it — we work out the surface area for you.
Most pools run between 78°F and 88°F in season. Warmer water evaporates faster.
Expected loss From evaporation alone
—in
per day
Enter your zip code above and tap Get my estimate. The other fields are already set to typical values — adjust them to match your pool if you like.
Rounded to the nearest 1/8 in so it matches a mark on your tape.
Diagram is not actual size — measure with your own tape or ruler.
Water rates vary enormously by city and usage tier — commonly $3–$12 per 1,000 gallons in the US, but only your bill knows yours. Use the water line only, not sewer — evaporated water never reaches the sewer.
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