1. What is the Pool Volume Formula?

The pool volume formula calculates the total gallons of water in a rectangular pool by multiplying length × width × average depth × 7.48 (the number of gallons in a cubic foot). This helps pool owners determine proper chemical dosing and pump sizing.

2. How Does the Calculator Work?

The calculator uses the pool volume equation:

Where:

• \( V \) — Volume in gallons
• \( L \) — Length in feet
• \( W \) — Width in feet
• \( D \) — Average depth in feet
• 7.48 — Gallons per cubic foot

Explanation: The formula calculates cubic feet (L×W×D) then converts to gallons by multiplying by 7.48 (gallons per cubic foot).

3. Importance of Pool Volume Calculation

Details: Knowing your pool's volume is essential for proper chemical treatment, pump and filter sizing, heating calculations, 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 an irregular shaped pool?
A: Divide into rectangular sections, calculate each separately, then sum the volumes. For circular pools, use π × radius² × depth × 7.48.

Q2: Why is 7.48 used in the formula?
A: There are 7.48052 gallons in one cubic foot of water at room temperature.

Q3: How accurate should my measurements be?
A: For chemical dosing, ±5% accuracy is usually sufficient. For equipment sizing, more precise measurements are better.

Q4: Does this work for saltwater pools?
A: Yes, the volume calculation is the same regardless of water type (freshwater or saltwater).

Q5: How often should I recalculate my pool volume?
A: Only when you make significant changes to pool dimensions or if you discover measurement errors.