That will depend on how deep you want the water to be.
18 x 36 ______ 108 540 ______ 648 gallons 18x36 = 648 square feet. Assume depth of pool 5 feet filled to brim, total volume 18x36x5 = 3240 cubic feet. 3240 multiplied by 6.22883 = 20181 UK gallons (rounded) 3240 multiplied by 7.48052 = 24237 US gallons (rounded)
A typical in-ground home pool contains between 20,000 and 30,000 gallons of water.
6015.77 gallons
319.2 gallons for every inch the water in it is deep.
That will depend on how deep you want the water to be.
26700 gallons
18 x 36 ______ 108 540 ______ 648 gallons 18x36 = 648 square feet. Assume depth of pool 5 feet filled to brim, total volume 18x36x5 = 3240 cubic feet. 3240 multiplied by 6.22883 = 20181 UK gallons (rounded) 3240 multiplied by 7.48052 = 24237 US gallons (rounded)
10053.82 gallons (US) 8371.568 gallons (UK)
...What are the dimensions of the pool?
A typical in-ground home pool contains between 20,000 and 30,000 gallons of water.
An 18x54 above ground round pool typically holds around 7,646 gallons of water when filled to the recommended level.
6015.77 gallons
319.2 gallons for every inch the water in it is deep.
18,506 U.S. gallons
This cannot be answered without knowing the depth of the water.
How large is the pool? In ground or above ground? Shape? Above ground is easier to calculate. I have an oval above ground pool which is 18 x 38. It holds approx. 15,000 gallons. To get an accurate answer, you need to be far more specific.