It's a common mistake, but you must first find the volume of the pool. Calculate the volume of the pool by surface area X average depth. This will give you the cubic footage (approx.) in the pool. Ft3 X 7.48 (gal/ft3) will give you gallons in pool (approx.).
1 gallon = 231 cubic inches
1728 cubic inches = 1 cubic foot
(25 x 20 x 4 x 1728) / 231 = 14,961 gallons (rounded)
36701.2987 gallons is the pool is evenly 4 feet deep.
How many imperial gallons is 30 cubic feet of water?
1,987 cubic feet = 14,860 gallons of water.
There are 8,483 gallons in 1,134 cubic feet of water.
4,088 cubic feet = 30,580 gallons of water.
31 cubic feet of water equates to ~231.9 gallons.
44,260 gallons of water.
58,168.52 gallons.
Four cubic feet is 29.92 gallons.
Six acre-feet of water is about 1,955,109 US gallons.
841.6 gallons
48,000 cubic feet is about 359,065 US gallons of water.
448.8 US gallons of water.