How many gallons of water is needed to fill an 18' round pool that is 48 deep?

Answer 1

The formula for the volume of a cylinder is Volume = height * pi * radius squared. That gives the volume in cubic feet, cubic meters or whatever your unit of measure might be. Convert from cubic ft to gallons using: 1 cubic foot = 7.480 519 481 gallon [US, liquid]

Answer 2

Area of pool = pi * diameter = 18ft *3.14159 = 56.55 sq ft Assume pool filled to within 6 inches of brim, therefore depth is 3.5ft. Volume of pool = 3.5ft * 56.55 sq ft. = 197.93 cubic ft 1 cubic ft = 6.25 gallons. Therefore volume of pool is 197.93 * 6.25 = 1237.1 gallons

Answer 3

In order to figure out proper doses of chemicals for your pool, you need to determine how many gallons of water it holds. To do that, you need to know four different numbers: the length, width, average depth, and a multiplier that determines gallons. Here is the formula: Length * Width * Average Depth * Multiplier = Gallons Determine the Multiplier: Rectangle, square, or free-form pool:multiplier = 7.5. Round or Oval pool: multiplier = 5.9 Determine the Average Depth: To determine the average depth in a pool where the bottom slopes, measure the shallow end, the deep end depth. Add them together and divide by two (2). Example: Shallow End = 2'. Deep End = 10'2' + 10' = 12'; 12'/2 = 6' Average Depth ====== 12 ft Round ~ 2,975 gallons 12' x 24' Oval ~ 5,948 gallons 15 ft Round ~ 4,646 gallons 15' x 30' Oval ~ 9,293 gallons 17 ft Round ~ 5,968 gallons 16' x 32' Oval ~ 10,573 gallons 21 ft Round ~ 9,106 gallons 18' x 33' Oval ~ 12,267 gallons 24 ft Round ~ 11,895 gallons 27 ft Round ~ 15,054 gallons 30 ft Round ~ 18,585 gallons 33 ft Round ~ 22,488 gallons

====== 12 ft Round ~ 3,398 gallons 12' x 24' Oval~ 6,797 gallons 15 ft Round ~ 5,310 gallons 15' x 30' Oval ~ 10,620 gallons 17 ft Round ~ 6,821 gallons 16' x 32' Oval ~ 12,084 gallons 21 ft Round ~ 10,408 gallons 18' x 33' Oval ~ 14,019 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

====== POOL SIZE GALLON 3.5' Av. DEPTH GALLON 4' Av. DEPTH GALLON 4.5' Av. DEPTH GALLON 5' Av. DEPTH GALLON 5.5' Av. DEPTH 12' x 24' 7,600 8,600 9,700 10,800 11,900 14' x 28' 10,300 11,800 13,200 14,700 16,200 15' x 30' 11,800 13,500 15,200 16,900 18,600 16' x 32' 13,400 15,400 17,300 19,200 21,100 18' x 36' 17,000 19,400 21,900 24,300 26,700 19' x 38' 19,000 21,700 24,400 27,100 29,800 20' x 40' 21,000 24,000 27,000 30,000 33,000 22' x 44' 25,400 29,000 32,700 36,300 39,900 25' x 45' 29,531 33,750 37,968 42,187 46,406 25' x 50' 32,800 37,500 42,200 46,900 51,600 30' x 50' 39,375 45,000 50,525 56,250 61,875

Answer 4

This pool, with 48 inches of water in it, contains about 7,646 gallons of water.

Answer 5

To fill your 18-foot round pool to a depth of 48" would require about 7,646 gallons of water. If you filled it to 36", the total would decrease to about 5,735 gallons.

Answer 6

Approximately 7500 gallons