Please use the charts below for your pool water capacity. After initial fill up of your pool, you will only need to replace water from evaporation, filter backwashing or splash.
Make sure during the year to have your pool water checked, when opening your pool, mid season and closing for proper chemical levels. All our stores are set up for FREE WATER TESTING.
In order to figure out how to properly add chemicals for your pool, it is often essential to determine approximately how many gallons of water your pool holds. You will also need to know how many gallons of water your pool contains if you choose to add a pool heater, heat pump or solar heater.
Aboveground Pool Sizes
48 Inch Deep
52 Inch Deep
54 Inch Deep
12 Ft Round
2,975 gallons
3,395 gallons
3,825 gallons
15 Ft Round
4,645 gallons
5,310 gallons
5,975 gallons
18 Ft Round
7,645 gallons
8,200 gallons
8,600 gallons
21 Ft Round
9,105 gallons
10,405 gallons
11,700 gallons
24 Ft Round
11,895 gallons
13,595 gallons
15,209 gallons
27 Ft Round
15,050 gallons
17,205 gallons
19,350 gallons
30 Ft Round
18,585 gallons
21,240 gallons
23,900 gallons
33 Ft Round
22,485 gallons
25,700 gallons
28,900 gallons
8' X 12' Oval
2,265 gallons
2,435 gallons
2,550 gallons
10' X 15' Oval
3,540 gallons
3,805 gallons
3,990 gallons
12' X 18' Oval
5,095 gallons
5,480 gallons
5,740 gallons
12' X 24' Oval
5,945 gallons
6,795 gallons
7,850 gallons
15' X 21' Oval
7,440 gallons
7,990 gallons
8,360 gallons
15' X 24' Oval
8,465 gallons
9,135 gallons
9,580 gallons
15' X 30' Oval
9,295 gallons
10,620 gallons
11,950 gallons
16' X 32' Oval
10,575 gallons
12,085 gallons
13,580 gallons
18' X 24' Oval
10,200 gallons
10,950 gallons
12,750 gallons
18' X 33' Oval
12,265 gallons
14,020 gallons
15,770 gallons
18' X 39' Oval
17,360 gallons
17,800 gallons
18,600 gallons
In Ground Pool Sizes
With 6' Deep End
With 7' Deep End
With 8' Deep End
16' X 32' Rectangle
15,360 Gallons
19,200 Gallons
21,210 Gallons
18' X 36' Rectangle
19,440 Gallons
24,300 Gallons
26.700 Gallons
20' X 40' Rectangle
24,000 Gallons
30,000 gallons
33,000 Gallons
Liners are Not Returnable. Please measure your pool one more time before you open the box and also check box for proper liner type and size! IF you purchased the wrong size or type of liner and DID NOT OPEN THE BOX you can Exchange it for the proper type and size.