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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
12	48	3400
12	52	3680
15	48	5310
15	52	5750
15	54	5980
18	48	7650
18	52	8280
18	54	8610
20	54	10,620
21	48	10,410
21	52	11,270
24	48	13,600
24	52	14,720
24	54	15,300
27	48	17,200
27	52	18,630
27	54	19,360
30	52	23,900
30	54	23,900
33	54	29,000

Oval Pools

Length in feet	Width in feet	Depth in inches	US Gallons
12	24	48	6200
12	24	52	6800
15	30	48	9700
15	30	52	10,600
16	32	48	11,000
16	32	52	12,000
18	33	48	12,800

Rectangular Pools

Length in feet	Width in feet	Depth in inches	US Gallons
12	24	48	8600
12	24	54	9700
12	24	60	10,800
14	48	48	11,000
14	48	54	13,200
14	48	60	17,700
15	30	48	13,500
15	30	54	15,200
15	30	60	16,900
16	32	48	19,400
16	32	54	21,900
16	32	60	24,300
18	36	48	21,700
18	36	54	24,400
18	36	60	27,100
19	38	48	24,000
19	38	54	27,000
19	38	60	30,000
20	40	48	29,000
20	40	54	32,700
20	40	60	36,300
22	44	48	33,750
22	44	54	37,968
22	44	60	42,200
25	45	48	37,500
25	45	54	42,200
25	45	60	46,900
25	50	48	45,000
25	50	54	50,525
25	50	60	56,250

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.