1. What is the Pool Gallons Formula?

The pool gallons formula calculates the volume of water in a rectangular pool. It's essential for proper chemical treatment, pump sizing, and maintenance planning.

2. How Does the Calculator Work?

The calculator uses the pool volume formula:

Where:

• \( Length \) — Pool length in feet
• \( Width \) — Pool width in feet
• \( Avg\ depth \) — Average depth in feet
• \( 7.5 \) — Conversion factor (gallons per cubic foot)

Explanation: The formula calculates cubic feet of water and converts to gallons (1 cubic foot = 7.48 gallons, rounded to 7.5 for simplicity).

3. Importance of Pool Volume Calculation

Details: Accurate volume calculation is crucial for proper chemical dosing, pump and filter sizing, heating requirements, and water replacement planning.

4. Using the Calculator

Tips: Measure pool dimensions accurately. For average depth: (shallow end depth + deep end depth) ÷ 2. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure irregular shaped pools?
A: For non-rectangular pools, break the shape into rectangular sections and calculate each separately, then sum the volumes.

Q2: What about oval or circular pools?
A: For circular pools: 3.14 × radius² × avg depth × 7.5. For oval pools: 3.14 × ½ length × ½ width × avg depth × 7.5.

Q3: Is the 7.5 factor exact?
A: It's rounded from 7.48052 gallons per cubic foot for simplicity. The difference is negligible for pool maintenance purposes.

Q4: How accurate should my measurements be?
A: For chemical treatment, within 5-10% is usually sufficient. For equipment sizing, more precise measurements are recommended.

Q5: Does this work for saltwater pools?
A: Yes, the volume calculation is the same regardless of water type. Only chemical treatment amounts will differ.