A 24-foot round pool with an average depth of 4 feet holds approximately 13,500 gallons of water.

A 24-foot round pool filled to an average depth of 4 feet contains approximately 13,500 gallons of water. The exact volume varies based on the actual water level and the pool's construction. To determine the precise capacity, calculate the pool's cubic footage, then multiply by 7.48 gallons per cubic foot.

Calculating Pool Volume

To determine the volume of a round pool in gallons, use the following formula:

Volume (gallons) = π × (radius in feet)² × (average depth in feet) × 7.48

Here's how to apply it for a 24-foot round pool:

1. First, find the radius: Divide the diameter by two. For a 24-foot pool, the radius is 12 feet.
2. Calculate the surface area: Use π (approximately 3.14159) multiplied by the radius squared (12² = 144). Area = 3.14159 × 144 ≈ 452.39 square feet.
3. Determine the cubic footage: Multiply the surface area by the average water depth. For a 4-foot average depth, 452.39 sq ft × 4 ft ≈ 1809.56 cubic feet.
4. Convert to gallons: Multiply the cubic footage by the conversion factor of 7.48 gallons per cubic foot. 1809.56 cubic feet × 7.48 ≈ 13,535 gallons.

Factors Affecting Pool Gallons

• Depth: This is the most significant factor. A small change in water depth can lead to a substantial difference in total gallons.
• Fill Level: Pools are rarely filled to their absolute maximum capacity. The actual water level dictates the true volume contained.
• Liner Type and Shape: While round, some liners or pool structures might have slight variations that minimally affect the overall volume.

Volume Comparison by Pool Depth for a 24 ft Round Pool