Daily loss, monthly refill and water cost
Pool Evaporation Calculator
Estimate pool evaporation, refill water and cost from surface area, evaporation depth and cover reduction.
Imperial and metric Rounded purchase quantities Cost estimate
Default project preview
1,052 gal
Daily water loss
35.1 gal
Annual water loss
12,799 gal
Pool surface area
450 ft²
Monthly depth equivalent
3.75 in
Calculator
Build the material order
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Enter the project details and calculate a rounded material estimate.
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Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Evaporation volume = surface area × daily depth × (1 − cover reduction).
FAQ
Pool Evaporation Calculator questions
How can I compare evaporation with a leak?+
Use a controlled bucket test under similar conditions.
Do covers eliminate all evaporation?+
No. Results depend on coverage and use.
Does this include splash-out?+
No. Add splash and backwash losses separately.