An 18x54 above ground round pool typically holds around 7,646 gallons of water when filled to the recommended level.
6015.77 gallons
A round pool that is 16 feet across and is filled with 48 inches of water will contain about 6,041 gallons of water.
Just a little over 6,000 gallons.
13,346 gallons per vertical foot.
5300 Gal
15000 gallons
18,000
I have a 12' above ground round pool that is fillable up to about 29 inches and it holds roughly about 1600 gallons so yours will probably hold more than 2000 gallons.
2977 (us) gallons Filled to the brim probably closer to 2500 for normal fill level
1690 gallons
There are 6016.20 gallons of water for every 1 foot of heigth. Therefore, the total gallons is 24,065gallons. Hope this helps. Louis Daigle