In stimulate to figure out the appropriate doses of countless chemicals for her pool, you often need come determine roughly how numerous gallons the water it holds. Also when including a pool Heater, warm Pump or Solar Heater to your pool, girlfriend will additionally need to recognize how many gallons you room dealing with.

You are watching: How many gallons in an 18 foot round pool

To do that, you need to use a leader to measure up your swimming pool to find out these four various numbers; Length, Width, Diameter (for round Pools), median Depth and then use a resolved Volume Multiplier to recognize the approximate number of gallons the pool holds.

If you have actually never done this before, don"t worry. We will walk you through the in-depth steps below.


I recognize What I"m Doing. Simply Tell Me The Formulas.

If girlfriend don"t need a detailed tutorial, and also you already know your measurements, and how to calculate median depth, here are the quick formulas for you to use on your own calculator.

Formula For mean Gallons In Rectangle, Square Or Freeform Pools:

Length x broad x mean Depth x 7.5 = full gallons

Formula For typical Gallons In one Pools:

Diameter x Diameter x mean Depth x 5.9 = total gallons

Formula For mean Gallons In Oval Pools:

Length x broad x median Depth x 5.9 = total gallonsFormula For mean Depth the Pools with Slopes:Shallow finish Depth + Deep finish Depth separated by 2 = mean DepthWell, I have The an easy Measurements, So deserve to You Just number It the end For Me?Absolutely. You have the right to use the E-Z swimming pool Water Calculator below to gain the approximate variety of gallons in her pool.Tips:1- Length and also Width room for rectangle, squares or ovals. It is finest to use totality numbers, rounded up. For example, if the swimming pool is 16 1/2 feet wide, use 17 feet together the width.2- put the Diameter in the Length and also Width fields for circular pools. It is finest to use totality numbers, rounded up. For example, if the swimming pool is 21 1/2 feet in diameter, usage 22 feet together the diameter.3- because that the typical Depth, the is finest to use whole numbers, rounded up. Because that example, if the mean Depth is 5 1/2 feet, use 6 feet together the median Depth.3- use the Gallon Multiplier of 8 because that rectangles or squares for best results.4- usage the Gallon Multiplier of 6 because that Circular or Ovals for finest results.
E-Z pool Water Calculator because that The Approximate number of Gallons that Water In her Swimming Pool

One more Time - - - - fast Tips To gain A general Idea making use of The Calculator Below:

Average Depth the a "typical" inground pool is 5Average Depth of a "typical" above ground swimming pool is 4Gallon Multiplier because that rectangle or square pools is 8Gallon Multiplier because that circular or oval pools is 6

Examples:

For a 16x32 rectangle inground pool you would usage 16 x 32 x 5 x 8 = 20,480 GallonsFor a 24 round over ground pool you would usage 24 x 24 x 4 x 6 = 13,824 Gallons

Give the A shot For you yourself !
length = X broad = X mean Depth = X Gallon Multiplier =

The almost right Gallons the Water In Your swimming pool Is =

I understand Nothing. You re welcome Walk Me through The totality Process.

If you recognize nothing, don"t worry! Most human being have never done this before. So we will display you the easiest and best method to measure her Pool.

Remember, nobody Expects you To it is in 100% Exact. Simply Do The finest You Can.

Please realize the you are never ever going to be 100% accurate because of calculated swimming pool water gallons (volume) are an almost right value as result of the variations in the sizes, distances and angles the the miscellaneous pool shapes and slopes.

Also a pool can be to fill "to the top" and also can likewise only be filled just "X" quantity of inches native the top. For example, a substantial rain storm deserve to raise the water level in a pool by a couple of inches over night, as many human being have watched all too often. And also a few inches (up or down) will readjust the "exact" variety of gallons in any pool possibly hundreds or hundreds of gallons, relying on the in its entirety size of the pool.

So don"t worry. And don"t get too hung up on being overly exact, just do the best you deserve to with her measurements.

What carry out I need to Measure, and How?

You can quickly measure the Length, Width and Diameter (if Round) of any swimming pool through a typical ruler. Compose down those measurement, typically to the nearest foot will certainly be an excellent enough.

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Now You"re Gonna require To obtain The typical Depth that the Pool

If you space lucky enough to have actually an above Ground Pool, or part Inground Pools where the entire bottom is one Depth, the is an extremely easy to figure out the mean Depth. The is simply the Depth the the water. Measure up it and also write under that number.

However, most Inground Pools, and many newer over Ground Pools have actually varying Depths, usually v angled Slopes going native level to level. This makes getting an median Depth a bit more difficult.

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How to determine the typical Depth the a swim Pool wherein the bottom slopes:

Below is a side-shot of the "typical" inground swimming pool that has a shallow finish (see "D"), climate a slope the leads right into the deep finish (deep finish is "C").

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If you have actually a long firm ruler, usage that to take it your dimensions for the Depths. If you have a ruler, however it isn"t an extremely firm, or lengthy enough, just use your vacuum pole to mark the depths of the pool with a basic piece of tape (or magic marker) ~ above the pole. Then just take your dimensions off the vacuum poll through your ruler. Again, you simply really need the gist, don"t gain too hung increase on an inch or two either way. Usually measurements like 3", 4", 6, 8", etc. Are good enough.First measure the depth of "D", the shallow finish (usually all over from 3" to 5"), and then measure the depth the "C", the deep end (usually anywhere between 6" and 12"). Then, include them together and divide by 2. This is the typical Depth of her pool. For example, if her shallow end "D" is 4", and also your deep finish "C" is 8", this would be her formula for the mean Depth:Formula For mean Depth that Pools with Slopes:Shallow finish Depth + Deep end Depth divided by 2 = mean DepthExample:Shallow finish = 4" + Deep end = 8", because that A total Of = 12"12" divided by 2 = 6"Therefore, in this example, your typical Depth would certainly be 6 feet.So right here are the actual formulas to figure out just how much water is in her swimming pool

These formulas organize true for both Inground pools as well as over ground pools.

Rectangular, Square or Free kind Pools:

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Formula For typical Gallons In Rectangle, Square Or Freeform Pools:

Length x width x median Depth x 7.5 = total gallons

For example: 16" x 32" x 4.5" x 7.5 = 17,280 Gallons

Circular Pools:

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Formula For typical Gallons In one Pools:

Diameter x Diameter x median Depth x 5.9 = full gallons

For example: 18" x 18" x 4" x 5.9 = 7,646 Gallons

Oval Pools:

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Formula For median Gallons In Oval Pools:

Length x broad x median Depth x 5.9 = complete gallonsFor example: 15" x 30" x 4" x 5.9 = 10,620 GallonsSo Now, Scroll back Up top top This page To The E-Z pool Water Calculator and also Give that A Try!Just take your newly uncovered measurements for Length, Width, (Diameter if Round), and also Average Depth - and also plug those numbers right into the E-Z pool Water Calculator and also see just how much water is in your pool. It"s the easy!Blah, Blah, Blah. I Really Don"t have Time For every one of This. Can You Just reduced To The Chase?If you just don"t care that much around knowing the "exact" amount of water in her pool, you room in luck! us have produced some handy charts the the most renowned sized Pools, and also their average Gallons the water. This charts are typically accurate enough for many residential uses.Most usual Sizes that Inground rectangular Pools and also How plenty of Average Gallons they Contain

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POOL SIZE4" AVG. DEPTH 5" AVG. DEPTH 6" AVG. DEPTH
12" X 24"8,64010,80012,960
14" X 28" 11,76014,70017,640
15" X 30"13,50019,90020,250
16" X 32"15,40019,20023,040
18" X 36"19,40024,30029,160
20" X 40"24,00030,00036,000
25" X 45"33,75042,18750,625
25" X 50"37,50046,90056,250
30" X 50"45,00056,25067,500


Most typical Sizes Of above Ground Pools and How countless Average Gallons lock Contain

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SIZEGALLONS that WATER12" Round3,39815" Round5,31018" Round7,64621" Round10,40724" Round13,59327" Round17,20428" Round18,50230" round 21,24033" Round25,70015" x 30" Oval10,620

SIZE

GALLONS the WATER
12" Round3,823
15" Round5,973
18" ring 8,602
21" Round11,708
24" Round15,292
27" Round19,354
28" Round20,815
30" Round23,895
33" Round28,912
15" x 30" Oval 11,947

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