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Pool Size Information
Knowing the proper number of gallons or liters in your swimming pool is very important for successful chemical care & treatment. And that goes along with first knowing the actual pool dimensions! Oh, we could tell you stories of 50,000 gallon aboveground pools... but here's what you're really after:
Aboveground Pools - based on 52" wall height pools, flat bottom (ACTUAL average approximate water depth of 44"; this is the true fill, not the capacity)
Pool Size | US Gallons |
Liters |
Surface Area (sq. ft.) |
12 ft. Rnd | 3,200 | 12,113 | 113 |
15 ft. Rnd | 5,000 | 18,927 | 177 |
18 ft. Rnd | 7,200 | 27,255 | 255 |
21 ft. Rnd | 9,800 | 37,096 | 380 |
24 ft. Rnd | 12,800 | 48,453 | 453 |
27 ft. Rnd | 16,200 | 61,323 | 572 |
30 ft. Rnd | 20,000 | 75,708 | 707 |
12 ft x 24 ft Oval | 6,400 | 24,226 | 240 |
15 ft x 24 ft Oval | 8,000 | 30,283 | 330 |
15 ft x 30 ft Oval | 10,000 | 37,854 | 410 |
18 ft x 33 ft Oval | 13,000 | 49,210 | 550 |
Inground Pools - based on a typical,
rectangular (2 ft. radius corners), vinyl liner construction (ANSI / NSPI
standard Type 1 Pool, 16x32 and larger; smaller pools are Type 0 with deep
depth of 5'6") , with average wall height of 42", shallow end water fill of
36" depth and a deep end water fill depth of 7'6" (90"). Gallonage
also takes typical piping & filtration system (100 lineal feet of pipe plus
filter capacity) into consideration.
Pool Size | US Gallons |
Liters |
Surface Area (sq. ft.) |
12 ft x 24 ft | 8,900 | 33,690 | 288 |
14 ft x 28 ft | 12,000 | 45,424 | 392 |
15 ft x 30 ft | 13,800 | 52,239 | 450 |
16 ft x 32 ft | 21,200 | 80,250 | 512 |
16 ft x 36 ft | 23,900 | 90,471 | 576 |
18 ft x 36 ft | 26,900 | 101,827 | 648 |
20 ft x 40 ft | 33,000 | 124,918 | 800 |
20 ft x 44 ft | 36,700 | 138,924 | 880 |
Gallonage Calculations (US gallons):
Rectangular Pools - length x width x average depth x 7.5
Round, Oval & Free-form Pools - aver. length x aver. width x aver. depth x
5.9
Convert to Liters: Gallons multiplied by 3.7854 = total liters