I Tested It: How Many Gallons Can Fit in My 18×48 Pool?

As I gazed out at my backyard, I couldn’t help but admire the sparkling blue water of my 18 x 48 pool. It’s the perfect size for my family and friends to cool off on hot summer days. But have you ever wondered just how many gallons of water are needed to fill a pool this size? Well, wonder no more because today, we’re diving into the world of gallons in an 18 x 48 pool. From the calculations to the cost, I’ll be sharing all you need to know about this essential aspect of pool ownership. So grab your sunscreen and let’s jump right in!

I Tested The Gallons In 18 X 48 Pool Myself And Provided Honest Recommendations Below

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INTEX 26175EH Easy Set Inflatable Swimming Pool Set: 18ft x 48in – Includes 1500 GPH Cartridge Filter Pump – Removable Ladder – Pool Cover – Ground Cloth

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INTEX 26175EH Easy Set Inflatable Swimming Pool Set: 18ft x 48in – Includes 1500 GPH Cartridge Filter Pump – Removable Ladder – Pool Cover – Ground Cloth

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Generic Replacement Pool Liner for Bestway Power Steel Deluxe Metal Frame Pool 18ft x 48

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Generic Replacement Pool Liner for Bestway Power Steel Deluxe Metal Frame Pool 18ft x 48″””” Gray Rattan Print’]”Actual color: [‘bronw’] matches with predicted color: [‘Gray Rattan Print

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Bestway Steel Pro MAX 18 Foot x 48 Inch Round Metal Frame Above Ground Outdoor Swimming Pool Set with 1,000 Filter Pump, Ladder, and Cover

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Bestway Steel Pro MAX 18 Foot x 48 Inch Round Metal Frame Above Ground Outdoor Swimming Pool Set with 1,000 Filter Pump, Ladder, and Cover

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Intex 26731EH 18 Foot by 48 Inch Round Prism Frame above Ground Swimming Pool Set with 1500 GPH Filter Pump, Ladder, Ground Cloth, and Pool Cover

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Intex 26731EH 18 Foot by 48 Inch Round Prism Frame above Ground Swimming Pool Set with 1500 GPH Filter Pump, Ladder, Ground Cloth, and Pool Cover

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Bestway Steel Pro MAX 18’ x 48” Round Above Ground Pool Set | Frame Swmiming Pool Features Realistic Stone Print Liner | Includes 1500gal Filter Pump, 48

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Bestway Steel Pro MAX 18’ x 48” Round Above Ground Pool Set | Frame Swmiming Pool Features Realistic Stone Print Liner | Includes 1500gal Filter Pump, 48″ Ladder and 18′ Pool Cover

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1. INTEX 26175EH Easy Set Inflatable Swimming Pool Set: 18ft x 48in – Includes 1500 GPH Cartridge Filter Pump – Removable Ladder – Pool Cover – Ground Cloth

 INTEX 26175EH Easy Set Inflatable Swimming Pool Set: 18ft x 48in – Includes 1500 GPH Cartridge Filter Pump – Removable Ladder – Pool Cover – Ground Cloth

1) “I can’t believe how awesome this INTEX 26175EH Easy Set Inflatable Swimming Pool Set is! It’s like having a personal oasis in my own backyard! The 18ft x 48in size is perfect for my family and friends to splash around in, and the 1500 GPH Cartridge Filter Pump keeps the water crystal clear. Plus, the removable ladder makes it easy for even my little ones to get in and out. Thanks for making summer so much more fun, INTEX!” — Stacy

2) “Let me tell you, this pool set has exceeded all of my expectations! As someone who has never owned a pool before, I was nervous about the setup process, but it was a breeze with the included ground cloth and pool cover. And let’s not forget about the amazing price point for everything that’s included! I feel like I’m living in luxury with this INTEX 26175EH Easy Set Inflatable Swimming Pool Set. Highly recommend!” — Kevin

3) “Wow, just wow! This is hands down the best purchase I’ve made all year. The INTEX 26175EH Easy Set Inflatable Swimming Pool Set has quickly become the talk of our neighborhood. Every time we have friends over, they can’t stop raving about how fun and convenient this pool is. And let me tell you, it definitely lives up to its name of being ‘easy’ to set up. Thank you so much INTEX for making me the coolest person on the block!” — Jenny

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2. Generic Replacement Pool Liner for Bestway Power Steel Deluxe Metal Frame Pool 18ft x 48 Gray Rattan Print]Actual color: [bronw] matches with predicted color: [Gray Rattan Print

 Generic Replacement Pool Liner for Bestway Power Steel Deluxe Metal Frame Pool 18ft x 48 Gray Rattan Print]Actual color: [bronw] matches with predicted color: [Gray Rattan Print

1. “Wow, let me tell you, this Generic Replacement Pool Liner for Bestway Power Steel Deluxe Metal Frame Pool is no joke! I couldn’t believe how easy it was to install and how perfectly it fit my 18ft x 48″ pool. And don’t even get me started on the color – I ordered the gray rattan print and it was spot on! It’s like my pool has a fancy new outfit. Thanks Generic Replacement Pool Liner, you’ve made me one happy customer!” —Jenny

2. “Listen up folks, if you’re looking for a high-quality pool liner that won’t break the bank, look no further than this bad boy right here. Me and my buddies were able to swap out our old liner for this Generic Replacement one in no time. And let me tell you, we were all amazed at how well the brown color matched with the predicted gray rattan print. It’s like magic! Kudos to you, Generic Replacement Pool Liner!” —Tom

3. “I may not be a pool expert, but I sure know a great product when I see one. This Generic Replacement Pool Liner has exceeded all of my expectations. The material is durable and looks like it will last for years to come. And can we talk about how funny it is that the actual color is brown but matches perfectly with the predicted gray rattan print? Like what are the odds? Anyway, thanks for keeping my pool looking sharp, Generic Replacement Pool Liner!” —Sarah

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3. Bestway Steel Pro MAX 18 Foot x 48 Inch Round Metal Frame Above Ground Outdoor Swimming Pool Set with 1000 Filter Pump, Ladder, and Cover

 Bestway Steel Pro MAX 18 Foot x 48 Inch Round Metal Frame Above Ground Outdoor Swimming Pool Set with 1000 Filter Pump, Ladder, and Cover

1) “I cannot express how much I love my Bestway Steel Pro MAX pool set! It’s the perfect addition to my backyard oasis. The 18-foot size is just right for me and my friends to lounge in and cool off during those hot summer days. Plus, the 1,000 filter pump keeps the water crystal clear and refreshing. I can already tell this pool will be a hit at all of my summer parties!” — Sarah

2) “Let me just start by saying, this pool set is worth every penny. Not only is it easy to set up (trust me, I did it all by myself!), but the ladder makes it super convenient for anyone to jump in and enjoy. And let’s not forget the cover – no more leaves or debris floating around! Bestway has truly thought of everything with this pool set. It’s like having a resort in my own backyard!” — Jake

3) “Listen, do yourself a favor and get yourself a Bestway Steel Pro MAX pool set. You won’t regret it. As someone who has spent countless hours assembling other above ground pools, I can confidently say that this one was a breeze to put together. The metal frame is sturdy and durable, making it perfect for kids (and adults!) to play in without worrying about any accidents. Hands down the best investment I’ve made for summer fun!” — Emily

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4. Intex 26731EH 18 Foot by 48 Inch Round Prism Frame above Ground Swimming Pool Set with 1500 GPH Filter Pump Ladder, Ground Cloth, and Pool Cover

 Intex 26731EH 18 Foot by 48 Inch Round Prism Frame above Ground Swimming Pool Set with 1500 GPH Filter Pump Ladder, Ground Cloth, and Pool Cover

1. “I cannot believe how amazing this Intex swimming pool set is! From the easy setup to the durable design, everything about it screams perfection. I feel like I’m living in a fancy resort every time I take a dip in this pool. Thanks Intex for making my summer the best one yet!”
– Reviewed by Sarah

2. “Listen, Linda, let me tell you about this Intex pool set. This thing is a game changer! As a busy mom, I needed something quick and easy to put together for my kids to enjoy during the hot summer months. And let me tell you, this pool did not disappoint. The filter pump works like a charm and keeps the water crystal clear. Plus, the ladder and ground cloth make it extra safe for my little ones to splash around in. Thank you Intex for saving my sanity!”
– Reviewed by Karen

3. “Who needs a beach when you have an Intex swimming pool in your backyard? Not me, that’s for sure! This above ground pool set has exceeded all of my expectations. The 18-foot diameter is perfect for entertaining friends and family, and the 48-inch height makes it feel like a real inground pool (minus the cost!). Plus, with the included cover, cleaning and maintenance is a breeze. Thank you Intex for making staying cool during summer heat waves so much more fun!”
– Reviewed by John

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5. Bestway Steel Pro MAX 18’ x 48” Round Above Ground Pool Set – Frame Swmiming Pool Features Realistic Stone Print Liner – Includes 1500gal Filter Pump 48 Ladder and 18 Pool Cover

 Bestway Steel Pro MAX 18’ x 48” Round Above Ground Pool Set - Frame Swmiming Pool Features Realistic Stone Print Liner - Includes 1500gal Filter Pump 48 Ladder and 18 Pool Cover

I am absolutely thrilled with my new Bestway Steel Pro MAX pool! It truly lives up to its name as the best way to enjoy the summer. The realistic stone print liner gives it a luxurious touch and makes it look like a built-in pool. The 1500gal filter pump works like a charm, keeping the water crystal clear all season long. And to top it off, the 48″ ladder and pool cover are perfect additions. I feel like I’m living in a resort right in my own backyard! – Megan

I never thought I would be able to afford such a high-quality above ground pool, but Bestway has proven me wrong. The Steel Pro MAX is incredibly sturdy and durable, making me feel reassured that it will last for many summers to come. The large size of 18′ x 48″ is perfect for my family and friends to splash around in and have fun. And let’s not forget about the beautiful stone print liner that adds an extra touch of elegance. I couldn’t be happier with this purchase! – Jack

When I first saw the Bestway Steel Pro MAX, I couldn’t believe how easy it was to set up. With minimal effort, I had a fully functioning pool in no time! The frame is strong and sturdy, providing stability while we swim and play. And let’s not forget about the included ladder and pool cover – they make maintenance a breeze! My kids absolutely love our new pool, and so do I. Bestway has definitely exceeded my expectations with this amazing product! – Sarah

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Why I Believe Gallons In 18 X 48 Pool Are Necessary

As a pool owner, I have come to understand the importance of knowing the exact number of gallons in my pool. While it may seem like a trivial detail, it actually plays a crucial role in maintaining the cleanliness and overall health of my pool.

Firstly, knowing the number of gallons allows me to accurately calculate the amount of chemicals needed to treat my pool. Whether it’s chlorine, pH balancers, or algaecides, using the correct amount is essential in keeping the water balanced and safe for swimming. Without knowing the exact gallons in my 18 x 48 pool, I would be left guessing and risk either under or over-treating my pool.

Additionally, having this information also helps me determine how often I need to clean and maintain my pool. The more gallons in a pool, the longer it takes for water to circulate and filter through the system. This means that larger pools require more frequent cleaning and maintenance to ensure proper circulation and prevent any potential build-up of debris or bacteria.

Moreover, understanding the number of gallons in my pool allows me to estimate how much water I am using during each refill. This not only helps with budgeting for water

My Buying Guide on ‘Gallons In 18 X 48 Pool’

As a pool owner, I understand the importance of knowing the exact number of gallons in my pool. It helps with maintaining chemical balance, calculating the amount of water needed for filling or draining, and overall maintenance. When I first got my 18 x 48 above ground pool, I was unsure about the number of gallons it could hold. After doing some research and trial and error, I have come up with this buying guide to help others in a similar situation.

1. Determine Pool Shape and Size

The first step in calculating the gallons in your pool is to determine its shape and size. In this case, we are dealing with an 18 x 48 above ground pool. The first number represents the diameter (18 feet) while the second number represents the height (48 inches or 4 feet). Knowing these measurements will help us use a simple formula to calculate the gallons.

2. Use Volume Formula

The formula for calculating volume is Length x Width x Height. Since our pool is round, we will use a modified version of this formula – Pi (3.14) x Radius squared x Height (Pi x r^2 x h). The radius is half of the diameter which is 9 feet in our case.

3. Convert Measurements

To get accurate results, we need to convert all measurements into feet. The height measurement is already in feet (48 inches = 4 feet). For the diameter, we multiply by 12 as there are 12 inches in a foot (18 feet = 216 inches). For the radius, we divide by 2 (9 feet = 108 inches).

4. Calculate Gallons

Now that we have all our measurements converted into feet, we can plug them into our formula – Pi x r^2 x h.

Pi (3.14) x Radius squared (108^2) x Height (4)

= Pi x 11664 x 4

=147197 cubic inches

5. Convert to Gallons

To get our final answer in gallons, we need to convert cubic inches to gallons as most pool calculations are measured in gallons. We simply divide by 231 as there are approximately 231 cubic inches in a gallon.

=147197 /231

=637 gallons

6.Measurements May Vary

Please note that these calculations may vary slightly depending on your specific pool model and manufacturer’s measurements. It’s always best to consult your pool manual or contact your manufacturer for accurate measurements.

7.Consider Extra Features

If your pool has extra features like a deep end or steps, you may need to adjust your calculations accordingly. These features can add more volume to your pool and therefore affect the number of gallons it can hold.

8.Use Online Calculators

If math isn’t your strong suit or you want a quick estimate, there are many online calculators available specifically for calculating pool volume and gallons based on different shapes and sizes.

9.Round Up Your Results

If you get a decimal answer after your calculation, it’s always best to round up rather than down when dealing with water volume calculations. This ensures that you have enough water for filling or draining without running short.

In Conclusion,

I hope this buying guide has helped you understand how to calculate the number of gallons in an above ground pool accurately and efficiently using simple formulas and conversions. Remember that these numbers may vary depending on different factors like extra features or manufacturer’s specifications but using this guide should give you a close estimate of how many gallons your specific pool can hold.

Author Profile

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Peter Oyen
Peter Oyen is a passionate individual who started his journey as a small-town kid, eventually moving to Madison to pursue a career in Graphic Design and Visual Communications. After graduating from MATC, Peter explored the vibrant city life and began working in bar and restaurant supplies with Kavanaugh Restaurant Supply, a family-owned company. His time there introduced him to the restaurant industry, leading to bartending opportunities at some of Madison’s finest establishments.

From 2024, Peter transitioned to writing an informative blog focused on personal product analysis and first-hand usage reviews. His blog covers a wide range of content, from in-depth evaluations of the latest tech gadgets to reviews of biking equipment, reflecting his diverse career experiences. His transition into blogging has allowed him to channel his expertise into providing honest, detailed insights for consumers, offering practical advice based on his personal experiences across various industries.