# How do you figure gallons in a pool?

Length times width gives the surface area of the pool. Multiplying that by the depth gives the volume in cubic feet. Since there are 7.5 gallons in each cubic foot, multiply the cubic feet of the pool by 7.5 to arrive at the volume of the pool, expressed in gallons.

## How many gallons is a 12×12 pool?

2,975 gals

Above Ground Swimming Pool Water Volumes by Size
12 ft Round 2,975 gals 3,398 gals
15 ft Round 4,646 gals 5,310 gals
18 ft Round 7,646 gals 8,602 gals
21 ft Round 9,106 gals 10,408 gals

## How many gallons is my pool chart?

How Many Gallons Of Water Are In My Swimming Pool?

POOL SIZE 4′ AVG. DEPTH 5′ AVG. DEPTH
15′ X 30′ 13,500 19,900
16′ X 32′ 15,400 19,200
18′ X 36′ 19,400 24,300
20′ X 40′ 24,000 30,000

## How many gallons is a 15ft 4ft pool?

Calculations. Multiply the diameter by the diameter by the depth by the water by the number 5.9 to determine the volume. For a 15-foot round pool that is 4 feet deep, the fomula would look like this: 15 x 15 x 4 x 5.9 = 5,310 gallons of water.

## How many gallons is a 18ft 4ft pool?

For example, for an 18 ft. pool 4 ft. high you would multiply 18 x 18 = 324. Then 324 x 4 = 1,296.

## How many gallons is a 15 foot by 42 inch pool?

3,861 gallons

Water capacity is 3,861 gallons (90%) and it is ready for water in 45 minutes.