Why do you need to know you Pool's Water Volume?
In order to figure out proper doses of chemicals for your pool, you need to accurately determine how many gallons of water it holds. To do that, you need to know four different numbers: the length, width, average depth, and a multiplier for your type of pool.
Here is the formula:
Length x Width x Average Depth x Multiplier = Volume in US Gallons
Determine the Multiplier:
- Rectangle, Square, or Free-Form pool: Multiplier = 7.5
- Round or Oval pool: Multiplier = 5.9
Determine the Average Depth:
To determine the average depth in a pool where the bottom slopes, measure the shallow end, the deep end depth. Add them together and divide by
two (2).
Example:
Shallow End = 2ft. Deep End = 10ft
2ft + 10ft = 12ft; 12/2 = 6ft Average Depth
Standard In-Ground Pool Sizes |
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POOL SIZE |
3.5 ft Avg Depth |
4 ft Avg Depth |
4.5 ft Avg Depth |
5 ft Avg Depth |
5.5 ft Avg Depth |
12 ft x 24 ft | 7,600 | 8,600 | 9,700 | 10,800 | 11,900 |
14 ft x 28 ft | 10,300 | 11,800 | 13,200 | 14,700 | 16,200 |
15 ft x 30 ft | 11,800 | 13,500 | 15,200 | 16,900 | 18,600 |
16 ft x 32 ft | 13,400 | 15,400 | 17,300 | 19,200 | 21,100 |
18 ft x 36 ft | 17,000 | 19,400 | 21,900 | 24,300 | 26,700 |
19 ft x 38 ft | 19,000 | 21,700 | 24,400 | 27,100 | 29,800 |
20 ft x 40 ft | 21,000 | 24,000 | 27,000 | 30,000 | 33,000 |
22 ft x 44 ft | 25,400 | 29,000 | 32,700 | 36,300 | 39,900 |
25 ft x 45 ft | 29,531 | 33,750 | 37,968 | 42,187 | 46,406 |
25 ft x 50 ft | 32,800 | 37,500 | 42,200 | 46,900 | 51,600 |
30 ft x 50 ft | 39,375 | 45,000 | 50,525 | 56,250 | 61,875 |
Standard Above Ground Pool Sizes |
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12 ft Round | ~ 2,975 gals | 12ft x 24ft Oval | ~ 5,948 gals |
15 ft Round | ~ 4,646 gals | 15ft x 30ft Oval | ~ 9,293 gals |
18 ft Round | ~ 7,646 gals | 16ft x 32ft Oval | ~ 10,573 gals |
21 ft Round | ~ 9,106 gals | 18ft x 33ft Oval | ~ 12,267 gals |
24 ft Round | ~ 11,895 gals | ||
27 ft Round | ~ 15,054 gals | ||
30 ft Round | ~ 18,585 gals | ||
33 ft Round | ~ 22,488 gals | ||
Standard Above Ground Pool Sizes |
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12 ft Round | ~ 3,398 gals | 12ft x 24ft Oval | ~ 6,797 gals |
15 ft Round | ~ 5,310 gals | 15ft x 30ft Oval | ~ 10,620 gals |
18 ft Round | ~ 8,602 gals | 16ft x 32ft Oval | ~ 12,084 gals |
21 ft Round | ~ 10,408 gals | 18ft x 33ft Oval | ~ 14,019 gals |
24 ft Round | ~ 13,594 gals | 18ft x 40ft Oval | ~ 19,116 gals |
27 ft Round | ~ 17,205 gals | ||
30 ft Round | ~ 21,240 gals | ||
33 ft Round | ~ 25,700 gals | ||
Round Pool Volume Calculator |
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Last Updated: 08/01/2014 01:45 AM - ID:1694