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Choosing the perfect pool size isn’t as straightforward as it sounds. Sure, it’s tempting to go as big as your backyard allows, but that’s not always the smartest choice—especially when you factor in maintenance, budget, and how your family will actually use the pool. From small fibreglass pools that pack a lot of fun into a compact space, to larger pools that create the ultimate backyard oasis, getting the size right can make all the difference in how much you enjoy your investment.

It’s about choosing the size that complements your lifestyle, fits your budget, and maximises the enjoyment for everyone in the family—whether you’re planning on hosting weekend pool parties or just want a relaxing place to cool off during hot summer days.

In this guide, we’ll break down everything you need to know about finding the perfect pool size, from understanding your family’s needs to weighing up the pros and cons of small, medium, and large pools. By the end, you’ll have a clear idea of which size is right for you and why sometimes, a smaller fibreglass pool might be the perfect fit.

Table of Contents

  • Why Getting the Right Pool Size Matters
  • Understanding Your Family’s Pool Needs
  • What Pool Sizes Are Available?
  • Small Fibreglass Pools: When Smaller Is Smarter
  • Large and Extra Large Pools: Finding the Right Fit for Bigger Families
  • How Pool Depth Affects Usage
  • Common Mistakes When Picking a Pool Size
  • Other Important (And Often Overlooked) Considerations
  • Final Thoughts: Choosing the Perfect Pool Size for Your Family

Why Getting the Right Pool Size Matters

It might be tempting to think that bigger is always better when it comes to pools, but that’s not always the case. Imagine this: you’ve splurged on a giant pool that takes up half your backyard. It looks impressive, sure—but now you’re spending more time cleaning it than swimming in it, the kids have lost interest after the first summer, and your weekend BBQs are squeezed into a tiny patch of lawn. Not exactly the dream you had in mind, right?

That’s why choosing the right size is so important. It’s about creating a pool that fits your family’s lifestyle and doesn’t become a burden. Too big, and you might find yourself with a backyard maintenance project that’s more work than fun. Too small, and it might feel cramped when you have friends or extended family over.

The sweet spot? A pool that fits your vision, budget, and how you actually plan to use it.

Understanding Your Family’s Pool Needs

Before you start measuring out your backyard and scrolling through pool designs, pause and consider the first step: thinking about how your family will actually use the pool.

Start by asking yourself a few key questions:

  • Are you picturing kids splashing around for hours every weekend?
  • Are you more of a “lounging with a book while dipping your toes” type?
  • Maybe it’s a mix of both?

If you’ve got young kids, you might want a design with plenty of shallow areas for safe play. If it’s just the adults, you might be happier with a smaller, elegant pool where you can cool off without a ton of upkeep.

For active swimmers, a longer pool that allows for laps makes sense. But if socialising is the main goal, built-in seating, benches, and space for water games might be higher on the wish list. Once you know what your family wants out of a pool, it’ll be a lot easier to narrow down the size that’s right for you—whether it’s a small fibreglass pool for quick family fun or something a bit larger that caters to a crowd.

The bottom line? (and we’ll repeat this until you’re tired of hearing it) The perfect pool size is the one that suits your family’s unique needs—not just your available space.

Rohan’s Expert Tips

Before picking a pool, think about how your family will really use it. Is it for weekend splashes with the kids or quiet lounging with a book? If it’s for the little ones, go for shallow areas. If it's for relaxing or laps, prioritise design and ease of maintenance. The perfect pool isn’t just about size—it’s about suiting your lifestyle

What Pool Sizes Are Available?

When it comes to in-ground pools, there’s a size for every family, backyard, and budget. Typically, pools are divided into three main categories: compact (small), large, and extra large. Each has its own sweet spot in terms of usage and features, so understanding what’s out there will help you match the size to your needs.

Pool Sizes - Lengths In Metres
0 m
Compact (Small) Pools are typically less than 5.5 metres long
0 m
Large Pools are typically between 6 and 8 metres long
0 m
Large Pools are typically between 9 and 11 metres long

Compact (Small) Pools:

These are typically between 2.4m and 5.5m in length, making them ideal for smaller backyards or areas where space is limited. Compact fibreglass pools are perfect for quick dips and relaxation, offering all the benefits of a larger pool but in a more manageable size.

Whitsunday 4.5m AquaGuard-XTM MarbletechTM Alabaster

Large Pools:

Ranging from 6.0m to 8.5m in length, large pools strike a balance between space and functionality. They’re great for families who want more room for active play and swimming, without taking up the entire yard. You can comfortably add seating areas, swim jets, or even a small water feature.

Hayman 7 in Eco-Pure Marbletech Pacific Pearl

Extra Large Pools:

With lengths ranging from 9.0m to 11.0m, these pools are designed for homeowners with plenty of backyard space. Extra large pools are perfect if you want a luxurious swimming area, plenty of room for laps, or a show-stopping centrepiece for entertaining guests

Daintree 11 in Aquaguard-X Marbletech Crystal

Understanding what’s possible with each size category will help you choose a pool that’s not only the right fit for your backyard but also for how you plan to use it. From compact and cosy to sprawling and impressive, there’s a size to suit every vision.

Small Fibreglass Pools: When Smaller Is Smarter

Sometimes, less is more—especially when it comes to fibreglass pools! Compact fibreglass pools (2.4m to 5.5m in length) are a fantastic choice for homeowners who want to make a splash without overwhelming their backyard. But don’t let the size fool you—these smaller pools are packed with potential. They’re perfect for quick dips, cooling off on hot days, or adding a bit of elegance to an outdoor space. Plus, they’re incredibly versatile and can easily be turned into a mini resort with the right touches.

So, what makes small fibreglass pools such a smart pick?

For one, they’re budget-friendly. Smaller pools come with lower upfront costs and require less water, fewer chemicals, and less heating—translating to big savings over time. And if maintenance is a concern, you’ll love the fact that cleaning a smaller pool is a breeze. Less surface area means less scrubbing, fewer chemicals to balance, and more time to enjoy the water.

But that’s not all—compact fibreglass pools are also easier to install. With their smaller size, they’re perfect for tricky spaces, narrow backyards, or those looking to preserve some green space around the pool. And because fibreglass shells are pre-made and delivered as a single piece, the installation process is fast and hassle-free. In most cases, you can go from bare backyard to stunning poolside in as little as a week!

If you’re after a pool that offers all the fun without the fuss, a small fibreglass pool might be the perfect fit

Whitsunday 5.5 in Eco-Pure Marbletech Cascade

Large and Extra Large Pools: Finding the Right Fit for Bigger Families

If you’ve got a bigger family or love to entertain, a medium or large pool might be more your speed. With more space to splash around, these pools are perfect for kids who want to dive and play, while still leaving room for the adults to relax. The key is finding the size that gives you the best of both worlds: enough room for everyone to enjoy without taking up your entire backyard.

Large Pools (6.0m to 8.5m in length)

Large pools are a popular choice for families who want a bit more versatility. There’s plenty of room for swimming laps, playing water games, or even installing some built-in features like benches, tanning ledges, or a shallow zone for younger kids. They’re also a great option if you’re planning to use your pool as the centrepiece of your outdoor entertaining area, creating a space where everyone can gather for BBQs, pool parties, and relaxed evenings by the water.

Whitsunday 6.5 with AquaGuard-XTM Mid Blue

Extra large pools (9.0m to 11.0m in length)

Looking to go all out? Extra large pools are the ultimate backyard statement. These spacious pools are ideal if you’ve got a big family or want a true resort-style experience. With an extra large pool, you can incorporate features like lap lanes, deep ends for diving, and even separate zones for lounging and playing. Just keep in mind that bigger pools come with higher maintenance and heating costs—so make sure it’s a size that fits your lifestyle and budget.

Daintree 8 in Eco Pure Marbletech Moonlight Oyster - Copy-webp

How Pool Depth Affects Usage

When it comes to picking the perfect pool, depth is just as important as length and width. The depth of your pool plays a huge role in how it’ll be used, who can safely enjoy it, and how comfortable it is for everyone. Choosing the right depth can transform your pool from a basic swim area into a multifunctional space that suits the whole family.

For small pools

A depth range of 1.1m to 1.6m is ideal. It’s deep enough for adults to cool off comfortably while standing, but still shallow enough for safe play if you have young kids. A shallower pool also means less water volume, making heating and maintenance easier on the budget. If you’re thinking of adding a built-in seating area or a tanning ledge, a shallower depth is perfect for creating a spot to lounge in comfort.

Larger pools

Offer more flexibility with depth, making it easier to designate different zones for different activities. Want a deep end for diving? You’ll need at least 1.8m of depth to ensure it’s safe. For a swim lane, a consistent depth of 1.2m to 1.5m is ideal for laps. And if you want a pool that’s great for a bit of everything, a sloped or graduated depth (from shallow at one end to deeper at the other) is a versatile option that keeps everyone happy—whether they’re doing cannonballs or just floating around.

Rohan’s Expert Tips

think about who’ll be using the pool most often. If it’s mainly for kids, staying in the 1.1m to 1.6m range is safer and easier to manage. If it’s for adults or more serious swimmers, consider deeper sections to give them space to move around comfortably. The right depth can make all the difference in creating a pool that’s enjoyable for years to come!

Common Mistakes When Picking a Pool Size

Choosing the right pool size isn’t just about picking a number and hoping for the best. There are a few common pitfalls that can turn your dream pool into a backyard headache if you’re not careful. Here’s what to watch out for:

1. Going Too Big, Too Fast

It’s easy to get carried away and pick the biggest pool that’ll fit in your yard. But bigger pools come with bigger price tags—not just for installation, but for maintenance, heating, and chemical costs, too. A large pool might look impressive, but if it’s rarely used, it’s a waste of money and space. Make sure you’re choosing a size that matches your lifestyle, not just your available square footage.

2. Forgetting to Leave Room for Extras

A pool is just one part of your backyard oasis. If you’re planning to add landscaping, a deck, an outdoor kitchen, or a play area for the kids, make sure you factor those elements into your layout before you commit to a pool size. You don’t want to be left squeezing in chairs around the edges because your pool took up all the room

3. Ignoring Depth Needs

Just because the pool looks big doesn’t mean it’ll feel that way if it’s too shallow or too deep for your needs. A pool that’s too deep might be intimidating for younger kids, while a pool that’s too shallow might feel cramped for adults who want to swim. Think about who will use the pool the most and choose a depth that works for everyone.

By avoiding these common mistakes, you’ll be better equipped to choose a pool that fits perfectly—not just for now, but for the long haul!

Other Important (And Often Overlooked) Considerations

There are a few important factors to keep in mind that will make all the difference in whether your pool becomes a source of frustration later on. Here’s what you need to consider before taking the plunge:

1. Pool Shape and Layout

The shape of your pool should match not just your aesthetic, but also how you plan to use it. A rectangular pool is perfect for laps and structured swimming, while freeform shapes can create a more relaxed, natural look. Think about the shape in relation to your yard—how will it sit alongside your house, patio, and landscaping? And don’t forget about functionality! If your pool is primarily for relaxation, you might want to include curved edges or built-in seating. If it’s for active play, more straight lines and a designated swim area might be better.

2. Future-Proofing Your Pool

It’s easy to think about your immediate needs, but will your pool still work for you five or ten years from now? If you’re planning on growing your family or expect to have more guests in the future, a slightly larger pool might be a good long-term investment. On the flip side, if you’re opting for a smaller fibreglass pool to keep things manageable now, make sure you’re designing it in a way that allows for future additions like a spa or surrounding entertainment areas, so it can evolve with your changing lifestyle.

3. Long-Term Maintenance and Upkeep

Different pool sizes and shapes will come with different maintenance demands. For example, complex shapes might look fantastic, but they can create more nooks and crannies for debris to settle in, increasing the time you’ll need to spend cleaning. Similarly, larger pools are naturally going to require more chemicals and higher heating costs. Make sure you’re picking a pool size and shape that you’re comfortable maintaining over the long run.

4. Resale Value and Appeal

Lastly, think about how your pool will impact the overall value and appeal of your home. While a beautifully designed pool can be a huge selling point, an oversized or poorly placed pool might actually turn buyers away. A well-sized, thoughtfully placed pool that complements your backyard’s layout can enhance your home’s value and make it more attractive to potential buyers in the future.

Final Thoughts: Choosing the Perfect Pool Size for Your Family

There are a few important factors to keep in mind that will make all the difference in whether your pool becomes a source of frustration later on. Here’s what you need to consider before taking the plunge:

Picking the right pool size is more than just a matter of square footage—it’s about creating a space that fits your family’s unique needs and lifestyle. Whether you’re leaning towards a compact fibreglass pool that maximises a small backyard, or you need a large family pool that can handle all-day swim sessions and weekend BBQs, getting the size right will ensure your pool is something you love for years to come.

Remember to consider how the pool will be used, who will use it the most, and what other backyard elements you want to include. By weighing up the benefits of different sizes and avoiding common pitfalls, you’ll be able to select a pool that not only looks amazing but also enhances your day-to-day life. And, if a small fibreglass pool fits the bill, you can enjoy all the perks of a gorgeous pool with minimal maintenance and maximum relaxation.

Ultimately, the perfect pool size is the one that makes your backyard the place where great memories are made—whether it’s a quiet oasis, a family fun zone, or the ultimate entertainment spot.

What are the benefits of a small fibreglass pool?

Small fibreglass pools are budget-friendly, quick to install, and easy to maintain. They’re ideal for compact backyards and cost less to heat and clean.

How do I choose the right pool size for my family?

Consider how your family will use the pool, the available space in your backyard, and your future needs. Pick a size that suits both your lifestyle and budget.

What are the typical dimensions for compact, large, and extra-large pools?

Compact pools range from 2.4m to 5.5m, large pools are 6.0m to 8.5m, and extra-large pools go from 9.0m to 11.0m in length.

How does pool depth affect its use?

Shallower pools (1.1m-1.6m) are great for families and casual use, while deeper pools (1.8m+) are ideal for diving or lap swimming.

What are the common mistakes to avoid when choosing a pool size?

Avoid going too big for your space, neglecting future needs, and ignoring the need for adequate surrounding space for landscaping and entertainment.

Have More Questions?

Choosing the right pool can be a big decision, and it’s natural to have more questions. If you’re still unsure about which type is the best fit for your home or want to dive deeper into the details, feel free to reach out today! We’re here to help make your pool planning as smooth as possible—no question is too large or too small (pun intended).

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Rohan Taylor
About The Author

Rohan Taylor

My wife and I grew up playing in swimming pools. Our daughters learnt to swim in our backyard fibreglass swimming pool. There is nothing quite like hearing kids splashing about and giggling. As pools do, our pool became a social magnet for friends, family and neighbours which we loved. Helping customers to have their own pool and saving customers thousands on their pool and equipment is the best job in the world.

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