How Big is Your Swimming Pool?


One of the things which is very handy to know is the number of gallons your pool will hold. Because pool chemicals are added based on the amount of water in the pool, knowing the size of your pool can be useful information.

Why knowing your pool size is important

After reading this article, you’ll not only know how to estimate the size of a round pool, but you’ll even know how to estimate the size of a rectangular pool with half a circle subtracted from it.

After reading this article, you’ll not only know how to estimate the size of a round pool, but you’ll even know how to estimate the size of a rectangular pool with half a circle subtracted from it.

The number of gallons by itself isn’t enough to set up a chemical treatment plan for your pool. It’s also affected by several other variables: how much sun the pool gets, the number of contaminants introduced, either by swimmers, wind, leaves, etc. Water quality is also a consideration. The type of pool construction matters: whether it’s a concrete, fiberglass, vinyl-lined.

But, before chemicals are introduced into the pool, knowing how many gallons a pool holds is an excellent place to start. Many chemicals are added per thousand gallons, meaning you need to know how many gallons you have before you can understand how much to add.

Formulas by configuration

To calculate the number of gallons in a pool, you’ll need a measuring tape and probably a helper to hold the free end. The following is a list of common pool shapes and the math formula for estimating the number of gallons in a pool. These are based on pools have straight sides.

Round

If your pool is round, multiply the number of feet across by itself, multiply that number by the depth, and then multiply the result by 5.9.

Rectangle

Multiply the length by the width in feet, and then multiply that number by the average depth (also in feet). Multiply your answer by 7.5

Oval

Multiply the longest length by the longest width. Multiply that answer by the average depth, and then multiply your answer by 5.9.

Odd shapes should be calculated using appropriately portioned smaller sections which resemble those listed above, then adding the totals together. So, for example, if you have an L-shaped pool, calculate it as two rectangles. If you

Hiring a pro

Even if you decide to hire a pro instead of spending your time maintaining your pool, this is essential information, both for monitoring the maintenance and water consumption. Also, you’ll have an idea of the size if you decide you want to resurface or remodel the pool.

If you decide you want a pro to calculate the size of your pool, provide maintenance service or repairs, give us a call today. We’d be happy to hear from you.

If you need pool maintenance for your Phoenix, Arizona pool or spa, call us here at Serenity Pools. Our services include new installation set-up, professional maintenance of pools and spas, water features, and fountains. Call today! 480-370-0579.