1. What is a Pool Gallon Calculator (Rectangle)?

Definition: This calculator estimates the water volume in gallons for rectangular swimming pools based on length, width, and average depth.

Purpose: It helps pool owners and professionals determine the correct amount of water needed for filling or treating rectangular pools.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V_{gal} \) — Volume of water (gallons)
• \( L \) — Length of pool (feet)
• \( W \) — Width of pool (feet)
• \( D_{avg} \) — Average depth of pool (feet)
• 7.48 — Conversion factor (gallons per cubic foot)

Explanation: The pool dimensions are multiplied together to get cubic feet, then converted to gallons using the standard conversion factor.

3. Importance of Pool Volume Calculation

Details: Accurate volume calculation ensures proper chemical treatment, pump sizing, and heating requirements for your pool.

4. Using the Calculator

Tips: Measure your pool's length and width at their longest points. For depth, average the shallow and deep end measurements if applicable.

5. Frequently Asked Questions (FAQ)

Q1: How do I measure average depth?
A: For pools with varying depths: (shallow end depth + deep end depth) ÷ 2.

Q2: What if my pool has a slope?
A: Use the average depth calculation method above for best results.

Q3: Why 7.48 gallons per cubic foot?
A: This is the standard conversion factor (1 cubic foot = 7.48052 gallons).

Q4: Does this work for oval pools?
A: No, this calculator is specifically for rectangular pools. Use a different formula for oval shapes.

Q5: How accurate is this calculation?
A: Very accurate for perfect rectangles. Account for any irregularities in shape when applying results.