A 24-foot round pool holds approximately 13,500-14,500 gallons of water (at 48-52 inches deep).
A 24-foot round pool's water volume depends on its depth. Standard depths (48-52 inches) yield 13,500-14,500 gallons. Deeper pools (e.g., 72 inches) can hold ~20,000 gallons. Use the formula: 3.14 × radius² × depth (ft) × 7.48 for precise calculations.
Key Factors Affecting Pool Volume
- Depth: Shallow (3-4 ft) vs. deep (5-6 ft) pools vary by 5,000+ gallons.
- Shape: Round pools calculate differently than oval or rectangular.
- Liner/Slope: Sloped bottoms reduce total volume slightly.
- Water Displacement: Swimmers, toys, or steps displace ~100-300 gallons.
Water Volume by Depth (24-Ft Round Pool)
| Depth (Inches) | Depth (Feet) | Estimated Gallons | Fill Time (500 GPH Pump) |
|---|---|---|---|
| 36" | 3 ft | 10,100 | 20+ hours |
| 48" | 4 ft | 13,500 | 27 hours |
| 52" | 4.3 ft | 14,500 | 29 hours |
| 72" | 6 ft | 19,800 | 40+ hours |
How to Calculate Your Pool's Gallons
- Measure diameter/radius: 24-ft pool = 12-ft radius.
- Determine average depth:
- Shallow end (e.g., 3 ft) + deep end (e.g., 6 ft) ÷ 2 = 4.5 ft avg.
- Apply the formula:
3.14 × (12 × 12) × 4.5 × 7.48 = ~15,700 gallons
- Adjust for slope: Subtract 5-10% if the pool has a graded bottom.
Common Mistakes to Avoid
- Ignoring depth variations: Always use the average depth, not max/min.
- Forgetting units: Convert all measurements to feet before calculating.
- Overlooking displacement: Account for 200-500 gallons lost to swimmers/debris.
- Using incorrect constants: The multiplier is 7.48 gallons per cubic foot, not 7.5.
Tools to Simplify Calculation
- Online calculators: Input diameter/depth for instant results.
- Mobile apps: Pool math apps store multiple pool profiles.
- Spreadsheets: Pre-built templates with automated formulas.
- Water meters: Track fill volume in real-time (if metered).