1. What is Pool Water Capacity?

Pool water capacity refers to the total volume of water a swimming pool can hold, measured in gallons. Knowing your pool's capacity is essential for proper chemical treatment, filtration, and maintenance.

2. How Does the Calculator Work?

The calculator uses the standard formula for rectangular pools:

Where:

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

Explanation: The formula calculates the cubic feet of the pool (length × width × depth) and converts it to gallons by multiplying by 7.48 (the number of gallons in one cubic foot).

3. Importance of Knowing Pool Volume

Details: Accurate pool volume is crucial for:

• Proper chemical dosing (chlorine, pH adjusters, etc.)
• Correct pump and filter sizing
• Heating and energy calculations
• Water replacement planning

4. Using the Calculator

Tips:

• Measure pool dimensions accurately
• For average depth: (shallow end depth + deep end depth) ÷ 2
• For freeform pools, divide into rectangular sections and calculate separately
• All values must be positive numbers

5. Frequently Asked Questions (FAQ)

Q1: How do I measure an irregularly shaped pool?
A: Divide the pool into rectangular sections, calculate each separately, then sum the volumes.

Q2: What about circular or oval pools?
A: For circular pools: π × radius² × depth × 7.48. Radius = diameter ÷ 2.

Q3: Why is pool volume important for chemical treatment?
A: Chemical dosages are based on gallons of water. Incorrect volume leads to under/over treatment.

Q4: How often should I recalculate my pool volume?
A: Only if you significantly change the pool dimensions or depth profile.

Q5: What's the margin of error for this calculation?
A: With precise measurements, within 5%. Account for pool shape irregularities and accessories.