How Many Gallons Of Water In A 15x30 Pool

Pool Reckoner

Created by Piotr Małek , Mateusz Mucha and Hanna Pamuła , PhD candidate

Reviewed by

Bogna Szyk and Jack Bowater

Concluding updated:

Apr 12, 2022

Table of contents:

How does the pool volume computer work?
Formulas behind puddle computer
How many gallons is my pool?
Olympic swimming pool volume
Pool figurer and other related tools
FAQ

The puddle calculator tells you how much water you volition need to fill pools of various sizes and depths. 🏊 This is useful information that volition help you to better estimate the cost of the water, as well as the amount of time you need to become from an empty pool to floating around with a absurd drink in your manus. If you're wondering how many gallons your pool has, give this tool a try!

Delight notation that the pool volume calculator assumes that the depth of the pool changes evenly and gradually from 1 terminate to the other, every bit is by and large the case. If this does non apply to your pool size, figures computed by the puddle calculator are nevertheless be in the correct ballpark.

How does the pool volume calculator work?

The pool h2o calculator is a tool similar to the volume computer; information technology also uses likewise the formulas from the square footage estimator.

image of a pool, the depth changing linearly

Finding the volume of a pool is a simple affair of getting the surface area of the surface of the pool and and so multiplying that by the boilerplate depth.

Get-go by entering the pool size (length and width).
Then add its depth at the two endpoints.
If there is both a shallow and a deep end, enter the shallow depth in the outset field and the deepest point in the second. Otherwise, enter ii identical values.
If the depth of your pool changes drastically instead of gradually, you may want to consider dividing it in half, with a divide pool calculator measurement for each part (as in the image on the right).

You could go one step further and, knowing the density of water (which is approximately ane kilogram per liter), work out how much the water in such a pool would weight.

Formulas behind puddle reckoner

So you no longer demand to worry "how many gallons is my pool?", simply apply 1 of the formulas:

Rectangular / square pool

volume = length * width * (depth1 + depth2) / 2

The showtime 2 agents is, of form, the formula for the area of the rectangle.

Oval / circumvolve pool

volume = (π * length * width / 4) * (depth1 + depth2) / 2

The beginning part of the equation comes from a standard area of an ellipsis formula: A = π * a * b, where a, b are the distances betwixt the center and the ellipse's vertex, lying on the horizontal and vertical axes. In our case, we accept the length and width values that are the doubled distances a and b, and so in the concluding formula, we need to divide the surface surface area of an oval past four.

You are wondering why nosotros boilerplate the depths (depth1 + depth2) / two? Have a await at the pictures:

Here you have the standard rectangular pool. l stands for the length of the pool, west for width, d1 is depth on one end of the puddle and d2 is the depth on the other end.

Let's take the correct trapezoidal side of the puddle. "Cut" the triangle, with i noon in the midpoint of the side, as in the picture.

Flip and move it to the other side to form a rectangle. The border of the new shape is the average of ii sides, so

(d1 + d2) / 2.

right trapezoidal side changed into rectangle

The area of such a rectangle is and then length * (depth1 + depth2) / 2. Multiply it by the 3rd dimension - the width - and you'll go the terminal formula for rectangular puddle volume:

book = length * width * (depth1 + depth2) / 2

How many gallons is my pool?

Let's calculate it with this pool book estimator!

Choose the shape of your pool. You lot can select between two types - rectangular/square pool or oval/circumvolve 1. Our example is with a standard rectangular pool, so leave the default value.
Enter the dimensions of the swimming pool. Allow'southward say that the pool is 12 ft broad and fifty ft long. Depth is gradually changing from iv to 6 feet.
The puddle computer shows the volume of water needed to fill up the pool. In our example, it's 22,441.57 U.s. gallons.

Our tool is sometimes called the puddle size figurer or pool gallon estimator because it works with any units, non just with metric. If nosotros didn't machine-detect your preferred units, click on meters to change it to gallons.

If your pool doesn't vary in depth, merely is some kind of a fancy shape like bow front or cylinder, check out this aquarium estimator - it has some overnice options for different 3D shapes. If the pool of your dreams comes in some custom or eccentric shape, check out the manufacturer's website.

Advanced mode:

If you know the price of water in your area, you can calculate the cost of filling up your pool. Click on the Advanced mode button, and an boosted part will appear. The pool gallon calculator takes the result of the previous section and multiplies it by the applicable rates of your local water supply. And thats it, all you need to do to detect out how much chirapsia the oestrus will cost!

Permit's accept the average cost of the h2o in the US, which is $one.50 per g gallons. For our exemplary pool, the cost of water is $33.66. Not so bad, huh?

This calculator finds the full book of your pool - in reality, you lot never fill the puddle all the way to the brim. As well, you may desire to accept a look at our other tool associated with submerged objects and their volume and weight - the buoyancy reckoner.

Olympic swimming puddle volume

To summate the Olympic swimming pool volume, yous need to know its dimensions. The length of the puddle is 50 m, width 25 thousand, and the depth varies: 2.0 1000 is the minimum, only 3.0 grand is the recommended depth. If you're non familiar with those metric units, cheque out this length converter to convert hands the pool size to US or imperial units.

Olympic-size pond pool contains 2,500,000 Fifty of h2o, assuming a nominal depth of 2 thou. It'southward around 550,000 imp gal and 660,000 U.s. gal - if y'all don't believe us, y'all tin can check it with our volume converter tool, where y'all'll notice other book units as well. Effort to summate the Olympic swimming puddle volume for a recommended depth of 3 meters - or use the pool calculator to get the answer in the glimmer of an eye.

Accept you always wondered how many tea- or tablespoons of h2o tin can fit into the Olympic swimming pool? We haven't either. But at present you lot can check information technology! Crawly, isn't it?

If you're thinking nigh amalgam🔨 your own puddle or pondpond in the backyard, you lot may desire to calculate the amount of pigment or tiles needed, and as well the amount of puddle salt and chlorine to be added.

The pool may also bring holidays to your mind - when laying on the embankment🌴 or by the pool, don't forget about putting sunscreen on! Make sure you know how long you tin can safely stay in the sunday and which SPF factor to utilize - have a look at our amazing sunbathing calculator👙 to discover the answers.

If you associate the word pool with sports and fitness🏊, yous may want to cheque how many calories you'll burn during a swim - give this calories burned calculator a go! Likewise, you may find the tools for assessing your speed or pace quite useful.

FAQ

How to calculate the water I need for my pool?

To find the water you demand for your pool:

Measure the length and width of your pool.
Mensurate the depth of the pool from where you lot'd like the waterline to be. If your pool's depth varies, have the boilerplate depth of both ends.
Ensure length, width, and depth are all in the same units.
Multiply the three measurements together to become your pool book.

How much chlorine do I need for my puddle?

To observe the corporeality of chloride your pool needs:

Determine the volume of your pool.
Refer to the chlorine manufacturer and notice the ratio of water/chlorine you need to use. You tin also consider using 52-104 oz of liquid chlorine (ane.5 - three.1 liters ) per ten,000 gallons of h2o (38 cubic meters). The equivalent ratio is 8.15 liters per 100 cubic meters.
Multiply your pool volume past the chosen ratio, keeping both units of volume the same, and you will get your chlorine requirement.

How many gallons do I need for my pool?

To observe the amount of gallons you need to fill your pool:

Measure the length and width of your pool in feet. Yous also need to know the average depth in feet.
Determine the volume by multiplying all three measurements together. The result will be in cubic anxiety.
Multiply the result by 7.five to convert the volume into US gallons.