1. What is the Pool Volume Formula?

The formula calculates the volume of a cylindrical pool in gallons. For a standard 27-foot round above-ground pool, the radius is typically 13.5 feet (since diameter = 27 feet).

2. How Does the Calculator Work?

The calculator uses the pool volume equation:

Where:

• \( V \) — Volume in gallons
• \( \pi \) — Approximately 3.14159
• \( R \) — Radius of the pool in feet
• \( D \) — Average depth of the pool in feet
• 7.48 — Conversion factor (cubic feet to gallons)

Explanation: The formula calculates the cylindrical volume in cubic feet then converts it to gallons (1 cubic foot = 7.48 gallons).

3. Importance of Accurate Pool Volume

Details: Knowing your pool's volume is essential for proper chemical treatment, pump sizing, and general maintenance. Incorrect volume can lead to over- or under-dosing of chemicals.

4. Using the Calculator

Tips:

• For a 27' pool, radius is pre-set to 13.5 feet
• Measure depth at both shallow and deep ends and average them
• All values must be positive numbers

5. Frequently Asked Questions (FAQ)

Q1: Why is the radius 13.5 feet for a 27' pool?
A: The diameter is 27 feet, and radius is half of diameter (27/2 = 13.5 feet).

Q2: How do I measure average depth?
A: Measure the shallow end depth and deep end depth, then calculate the average. For uniform depth pools, just use that measurement.

Q3: What if my pool isn't perfectly round?
A: This calculator assumes a perfect cylinder. For oval pools, more complex calculations are needed.

Q4: Why multiply by 7.48?
A: There are 7.48 gallons in one cubic foot. This converts the volume from cubic feet to gallons.

Q5: How accurate is this calculation?
A: Very accurate for standard round above-ground pools. Actual volume may vary slightly due to pool shape imperfections.