It is very important to know how many gallons of water are in your pool. You need this information to maintain good water chemistry. Any label you read will say to add x amount of product per 10,000 gallons.
Our first pool volume chart will get you close for above ground pools and our second chart will get you close for various size inground swimming pools.
CHECK OUT OUR FREE ADDING CHEMICAL CALCULATOR APP
Above Ground Pool Sizes with a Pool Wall of 52 inches
12 ft Round ~ 3,398 gallons
15 ft Round ~ 5,310 gallons
18 ft Round ~ 6,821 gallons
21 ft Round ~ 10,408 gallons
24 ft Round ~ 13,594 gallons
27 ft Round ~ 17,205 gallons
30 ft Round ~ 21,240 gallons
33 ft Round ~ 25,700 gallons
12′ x 24′ Oval ~ 6,797 gallons
15′ x 30′ Oval ~ 10,620 gallons
16′ x 32′ Oval ~ 12,084 gallons
18′ x 33′ Oval ~ 14,019 gallons
In-Ground Pool Sizes with Varying Average Depths:
POOL SIZE GALLONS WITH 4′ SHALLOW & 7′ to 9′ DEEP END AVERAGE
12′ x 24′ 9,500 TO 11,000 gallons
14′ x 28′ 13,000 TO 15,000 gallons
15′ x 30′ 13,900 TO 15,200 gallons
16′ x 32′ 17,300 TO 20,000 gallons
18′ x 36′ 22,500 TO 24,500 gallons
19′ x 38′ 24,400 TO 27,500 gallons
20′ x 40′ 30,000 TO 34,000 gallons
22′ x 44′ 36,300 TO 39,900 gallons
25′ x 45′ 42,200 TO 46,500 gallons
25′ x 50′ 46,900 TO 51,700 gallons
30′ x 50′ 56,200 TO 62,500 gallons
