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Swimming Pool Size Chart

Want to know how much water your swimming pool holds? The charts below will tell you!

Of course, the numbers can’t tell you how much water you’ll actually use over the course of a season. That depends on the weather and evaporation, how often you use the pool, and many other factors. These charts just refer to how many gallons it takes to fill an empty pool.

Keep in mind that the average family in the USA uses 300 gallons of water every day. That includes bathing, doing laundry, flushing the toilet, and everything else. So adding even a small pool is like adding more than 11 extra days of water use to the year.

We really like the article we linked to above – it breaks down how we use water. And 12% goes to leaks! Dealing with that is a subject for some other website, but it’s worth looking into. Check out the article and start brainstorming your own ideas for saving water and money!

We’ve included a calculator to figure out about how much it will cost to fill your pool Of course, water rates vary widely. Some areas have different rates for households with pools. So you have to check your water bill to find out your costs. Simply consult our charts to find how many gallons your pool holds. Put that and your water bill rate into the calculator to get a rough idea of “startup” costs to fill the pool

We apologize in advance if we didn’t include your pool size here. There are so many variations that it’s impossible to cover them alll!

[CP_CALCULATED_FIELDS id=”7″]

Round Pools

Pool Diameter
in feet
Pool Depth (inches)
(average, if sloped)
US Gallons
12483400
12523680
15485310
15525750
15545980
18487650
18528280
18548610
205410,620
214810,410
215211,270
244813,600
245214,720
245415,300
274817,200
275218,630
275419,360
305223,900
305423,900
335429,000

Oval Pools

Length
in feet
Width
in feet
Depth in inchesUS Gallons
1224486200
1224526800
1530489700
15305210,600
16324811,000
16325212,000
18334812,800

Rectangular Pools

Length
in feet
Width
in feet
Depth in inchesUS Gallons
1224488600
1224549700
12246010,800
14484811,000
14485413,200
14486017,700
15304813,500
15305415,200
15306016,900
16324819,400
16325421,900
16326024,300
18364821,700
18365424,400
18366027,100
19384824,000
19385427,000
19386030,000
20404829,000
20405432,700
20406036,300
22444833,750
22445437,968
22446042,200
25454837,500
25455442,200
25456046,900
25504845,000
25505450,525
25506056,250

About Us

Tom and Sarah Greenwood are the dynamic duo behind “Yards Improved,” dedicated to the joys and challenges of gardening, pool maintenance, and lawn and patio care. With Tom’s passion for landscape design and Sarah’s enthusiastic approach to gardening, they share their journey of transforming their backyard into a thriving retreat. We strive to offer practical advice aimed at helping you enhance your outdoor space.