Find how many gallons a 24 ft round pool holds from its average water depth, in US gallons and litres. Enter the values shown in the calculator to get a practical planning estimate.
Enter the inside water dimensions and average depth. The estimate updates when you calculate.
The gallons in a 24-foot pool depend on what the 24-foot measurement represents, the pool's shape and its average water depth. For a round pool, diameter and average depth are key measurements; other pool designs require a different approach. It also helps answer questions such as “how many gallons in a 24 ft above ground pool.”
A pool's nominal size does not fully describe its water capacity. A more careful estimate supports later calculations for water treatment, circulation and heating.
Note: This page explains a pool-size query; a reliable gallon estimate still requires pool shape and average depth.
There is no single capacity for every 24 ft pool. A 24 ft round pool gallons estimate depends mainly on the inside diameter at the waterline and average water depth. For a round pool, the volume is the circular surface area multiplied by average depth. The calculator converts cubic feet to US gallons and litres, and lets you adjust the default 24 ft diameter.
For example, a 24 ft above ground pool gallons estimate with a 4 ft average water depth is approximately 13,540 US gallons before accounting for wall shape, floor slope, steps or other features. Enter your actual average water depth for a more useful estimate. Common questions include how many gallons in 24 ft pool, how many gallons are in a 24 ft pool, how many gallons in a 24 ft round pool, and how many gallons is a 24 ft round pool. Each needs both diameter and depth to give a meaningful answer.
The chart below includes the 24 ft row at depths from 3 to 5 ft, along with other common round pool sizes. A 24 ft above ground pool is usually filled to roughly 4 ft, which is about 13,500 gallons. For larger pools see the 30 ft round pool gallons calculator, or use the pool volume calculator for rectangular and oval pools.
| Diameter | 3 ft | 3.5 ft | 4 ft | 4.5 ft | 5 ft |
|---|---|---|---|---|---|
| 12 ft | 2,550 | 2,950 | 3,400 | 3,800 | 4,250 |
| 15 ft | 3,950 | 4,650 | 5,300 | 5,950 | 6,600 |
| 18 ft | 5,700 | 6,650 | 7,600 | 8,550 | 9,500 |
| 21 ft | 7,750 | 9,050 | 10,350 | 11,650 | 12,950 |
| 24 ft | 10,150 | 11,850 | 13,550 | 15,250 | 16,900 |
| 27 ft | 12,850 | 15,000 | 17,150 | 19,250 | 21,400 |
| 30 ft | 15,850 | 18,500 | 21,150 | 23,800 | 26,450 |
| 33 ft | 19,200 | 22,400 | 25,600 | 28,800 | 32,000 |
Figures are rounded to the nearest 50 gallons and use π × radius² × depth × 7.48052. Multiply by 3.785 for litres. Use the average water depth, not the wall height.
It depends on the water depth. A 24 ft round pool holds roughly 10,150 gallons at 3 ft, 11,850 gallons at 3.5 ft, 13,550 gallons at 4 ft, 15,250 gallons at 4.5 ft and 16,900 gallons at 5 ft. Use the average depth of the water, not the height of the wall.
A 24 ft above ground pool with 52 inch walls is normally filled to around 4 to 4.25 ft, which is about 13,500 to 14,400 gallons, or roughly 51,000 to 54,500 litres. Measure the water depth in your own pool for a closer figure.
Multiply the surface area by the average depth and then by 7.48. For a 24 ft round pool the area is π × 12 × 12, or about 452 square feet. At a 4 ft average depth that is 452 × 4 × 7.48, which comes to about 13,540 gallons.
No. A 24 ft round pool has about 452 square feet of surface. A 24 × 12 ft oval has about 226 square feet, so at the same depth it holds roughly half as much. Always check the shape before relying on a quoted size.
A 15 ft round pool holds about 5,300 gallons at a 4 ft depth and a 30 ft round pool holds about 21,150 gallons at 4 ft. The size chart on this page lists more diameters, and the 30 ft round pool gallons calculator has the larger sizes in detail.
No. A pool with 52 inch walls is rarely filled to the very top, and the water level also sits below the wall edge. Measure from the floor to the waterline for a realistic depth.
Yes, as a starting point. Use a carefully measured depth, follow the product label, and retest the water. If the pool has steps, benches or an unusual floor, the real volume may differ a little.
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