Round Pool Gallon Calculator

Round Pool Volume Formula:

\[ V_{gal} = \pi \times r^2 \times D \times 7.48 \]

Pool Volume (gallons):

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1. What is a Round Pool Gallon Calculator?

Definition: This calculator estimates the volume of water in gallons for a round swimming pool based on its radius and depth.

Purpose: It helps pool owners and installers determine how much water is needed to fill a round pool, which is essential for chemical treatment and pump sizing.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ V_{gal} = \pi \times r^2 \times D \times 7.48 \]

Where:

\( V_{gal} \) — Volume in gallons
\( r \) — Radius of the pool (feet)
\( D \) — Depth of the pool (feet)
7.48 — Conversion factor (gallons per cubic foot)

Explanation: The formula calculates the cylindrical volume in cubic feet then converts it to gallons.

3. Importance of Pool Volume Calculation

Details: Accurate volume calculation ensures proper chemical dosing, correct pump and filter sizing, and helps estimate filling costs.

4. Using the Calculator

Tips: Measure the pool's radius (half of diameter) and average depth. For variable depth pools, use the average of shallow and deep end measurements.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure pool radius?
A: Measure the diameter (widest point across the pool) and divide by 2.

Q2: What if my pool has a sloped bottom?
A: Use the average depth: (shallow end depth + deep end depth) ÷ 2.

Q3: Why 7.48 in the formula?
A: There are 7.48 gallons in one cubic foot of water.

Q4: Does this work for oval pools?
A: No, this calculator is for perfectly round pools only.

Q5: How accurate is this calculation?
A: It's very accurate for perfect cylinders. Real pools may vary slightly due to shape irregularities.