1. What is Gallons Per Inch?

Gallons per inch is a measurement that indicates how many gallons of water are needed to raise or lower the pool water level by one inch. This is useful for water treatment, filling, and maintenance calculations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( area\_sqft \) — Pool surface area in square feet
• 7.48 — Conversion factor (gallons per cubic foot)
• 12 — Conversion factor (inches per foot)

Explanation: The formula calculates the volume of water (in gallons) that corresponds to a 1-inch depth across the entire pool area.

3. Importance of Calculation

Details: Knowing gallons per inch helps with accurate chemical dosing, water replacement calculations, and understanding water loss through evaporation or splash-out.

4. Using the Calculator

Tips: Enter the pool's surface area in square feet. The value must be greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure my pool's surface area?
A: For rectangular pools: length × width. For circular pools: π × radius². For irregular shapes, consult pool specifications or use approximation methods.

Q2: Why is 7.48 used in the formula?
A: 7.48 is the number of gallons in one cubic foot of water, which is necessary to convert volume measurements from cubic feet to gallons.

Q3: Does this calculation work for all pool shapes?
A: Yes, as long as you know the surface area, the calculation works for any shape since it's based on area rather than volume directly.

Q4: How accurate is this calculation?
A: Very accurate for flat-bottom pools. For pools with significant slope or variable depth, it provides an average value.

Q5: Can I use this for other liquids besides water?
A: The calculation is specific to water (7.48 gal/ft³). For other liquids, you would need to use their specific weight or density.