Swimming Pool Evaporation Rate Calculator

Evaporation Formula:

\[ Evaporation = SA \times ER \times 7.48 / 12 \]

Evaporation Rate:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Swimming Pool Evaporation?

Swimming pool evaporation is the natural process where water molecules transition from liquid to vapor state and escape from the pool surface. It's influenced by temperature, humidity, wind speed, and pool surface area.

2. How Does the Calculator Work?

The calculator uses the evaporation formula:

\[ Evaporation = SA \times ER \times 7.48 / 12 \]

Where:

\( SA \) — Surface area of the pool (square feet)
\( ER \) — Evaporation rate (inches per day)
\( 7.48 \) — Conversion factor (gallons per cubic foot)
\( 12 \) — Conversion factor (inches to feet)

Explanation: The formula calculates daily water loss by converting surface area and evaporation depth into volume measurements.

3. Importance of Evaporation Calculation

Details: Understanding evaporation rates helps pool owners manage water conservation, chemical balance, heating costs, and maintenance schedules more effectively.

4. Using the Calculator

Tips: Enter pool surface area in square feet and typical evaporation rate in inches per day. Average evaporation rates range from 0.1 to 0.25 inches per day depending on climate conditions.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect pool evaporation rates?
A: Temperature differences, humidity levels, wind speed, pool water temperature, and air movement all significantly impact evaporation rates.

Q2: How can I reduce pool evaporation?
A: Using pool covers, reducing water temperature, installing windbreaks, and maintaining proper chemical balance can help minimize evaporation.

Q3: What is a typical evaporation rate for pools?
A: Most pools lose 0.1-0.25 inches of water per day, with higher rates in hot, dry, windy conditions and lower rates in humid, calm conditions.

Q4: How do I measure my pool's surface area?
A: For rectangular pools: length × width. For circular pools: π × radius². For oval pools: length × width × 0.8. For irregular shapes, consult pool specifications.

Q5: When is evaporation highest?
A: Evaporation peaks during summer months, particularly on hot, dry, windy days when the water temperature is significantly warmer than the air temperature.