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A Comprehensive Guide to Choosing the Right Mattress Size

Author imageThe Mattress Warehouse

Shopping for mattresses can be a real head-scratcher. The sheer variety of mattress sizes, each seemingly tailored for different needs, can leave you tossing and turning in confusion. Fear not, because in this guide, The Mattress Warehouse is delving into the realm of mattress size! Demystifying the choices and helping you find that perfectly sized sleep haven. We’ll cover everything from single and double mattresses to three-quarter, queen, and king sizes. And then, we’ll show you some of our favourite mattresses in various size categories, just to make your choices easier.

So, let’s embark on this cosy journey of mattress selection together.

Mattress Sizes in South Africa

Before we dive into specifics, let’s get acquainted with mattress sizes in South Africa. They span from the snug single (91 cm x 188 cm) to the sprawling king (183 cm x 188 cm), with options in between to suit various preferences and living spaces.

Oh, and if normal mattresses are a bit too short for you, don’t stress. You can get an extra length mattress (200 cm long) to make your life easier. And if you really need a lot of space on your bed, you can opt for the 200 cm x 200 cm Super King bed!

Single Mattress Size

  • Standard: 91 cm x 188 cm
  • Extra Length: 91 cm x 200 cm

Ideal for solo sleepers or kids transitioning to their own beds, the single mattress is a space-saving gem. It’s perfect for cosy bedrooms, guest rooms, or even bunk beds. Its compact nature makes it a great choice for smaller living spaces, ensuring you don’t compromise comfort for size.

Three-Quarter Mattress Size

  • Standard: 107 cm x 188 cm
  • Extra Length: 107 cm x 200 cm

The three-quarter mattress strikes a balance between the single and double, making it suitable for growing teenagers or shared bedrooms. It offers more space for movement while remaining space-efficient. Whether it’s a teenager’s den or a multipurpose room, the three-quarter mattress adapts well.

Double Mattress Size

  • Standard: 137 cm x 188 cm
  • Extra Length: 137 cm x 200 cm

A double mattress is a fantastic choice for couples living in small apartments, or for individuals who enjoy starfish-style sleeping. It’s versatile enough for couples’ bedrooms, providing room to stretch out without overwhelming the space. It’s also a popular choice for guest rooms.

Queen Mattress Size

  • Standard: 152 cm x 188 cm
  • Extra Length: 152 cm x 200 cm

The queen mattress is like a sweet spot for couples who like to snuggle yet crave a bit of sprawl space. It’s also a luxurious choice for single sleepers who like to stretch out. Perfect for master bedrooms, the queen mattress adds a touch of elegance and comfort.

King Mattress Size

  • Standard: 183 cm x 188 cm
  • Extra Length: 183 cm x 200 cm

Behold the king of mattresses, fit for couples who truly want to rule their sleep space. If you have ample floor space in your bedroom, the king mattress is a great option. It offers plenty of space for each sleeper to find their perfect sleep spot. It’s a regal addition to master suites, providing the ultimate sleep experience.

What Mattress is Right for You?

That depends on a couple of things. So before you decide on what size mattress you want to buy, first answer these questions:

  • Evaluate your sleep habits – Do you toss and turn a lot or lie in roughly the same spot all night?
  • Will the mattress fit on your bed base – Plenty of modern beds come with bases specifically for the mattress. However, if your bed base is a family heirloom and you want to keep sleeping on it, you should ensure that your new mattress fits on the base. So grab a measuring tape and measure the top dimensions of your bed base and keep that in mind when you are shopping for your new mattress.
  • Evaluate your bedroom floor space – How big is your bedroom or the room you want to put the bed/mattress in? You want at least 65 cm of moving space around the foot and sides of the bed – slightly more is better. Hope you haven’t put away the measuring tape yet…
  • How many pets and people will share your sleep space – Do you have a family where your kids often share the bed with you? Maybe you have a host of furry friends that snuggle up when it’s cold?

Once you’ve answered these questions you are ready to decide on what size mattress to buy.

And now, to put you on the right track, here are some of our favourite mattresses.

Mattress Top Picks


Instead of picking by mattress size, we decided to pick by mattress function. These are the categories we chose from:

  • Great mattress for kids
  • Best mattress for students
  • Excellent choice for young professionals
  • Best bed for couples

Without further ado, let’s dive in.

Great Mattress Choice for Growing Children – Strandmattress Sleep Safe Mattress

Single mattresses are ideal for your growing children.

Single mattresses are smaller than the other standard mattress sizes, so they tend to cost less. And that is a bonus when buying a new mattress for your child, with school fees, keeping them fed and whatnot.

One of the single mattresses that our customers love, especially for their children, is the Strandmattress Sleep Safe Mattress. It is specifically designed for growing children, with a firm comfort level. Check out what this happy client has to say about the mattress:

“We have bought this mattress for [our] daughter and she is just loving the comfort.”

– Regan Naicker

Strandmattress Sleep Safe Mattress

The Strandmattress Sleep Safe Mattress has a hypo-allergenic bamboo exterior for comfortable sleeping.

  • Current price: R1,499.00 to R2,199.00
  • Comfort level: Firm
  • Weight Limit: 70 kg per person

Best Mattress Choice for Students – Kooi Athlete Mattress

Three-quarter mattresses work well for students. It has a bit more sleeping space to accommodate the tired student than a single bed. Moreover, it doesn’t take up so much space that it will completely dominate a relatively small student apartment.

The Kooi Athlete Mattress is an excellent choice for busy students. After a long day of class, walking around and playing sports (or socialising), what better way to fall asleep than on a mattress specifically designed for active people?

The Kooi Athlete Mattress.

The Kooi Athlete Mattress is made from pure foam for shape retention and pressure relief.

  • Current price: R1,999.00 to R4,499.00
  • Comfort level: Firm
  • Weight Limit: 110 kg per person

Best Mattress for Young Professionals – Olive River Mattress

You’ve settled into your new role and you enjoy the freedom of a slightly larger apartment than what you had to share with your roommate at varsity. But you’re not in your dream house yet. So floor space is still at a premium.

Consider getting a double mattress. It offers you the luxury of sprawling out while you sleep and makes for a good place to watch your favourite series in comfort. You should also have enough floor space left for all the new work clothes and shoes.

The Olive River Mattress is super comfy with its medium comfort rating, suitable for all sleeping styles. Moreover, it is made from environmentally friendly and recyclable material so you’ll feel like you are doing your part in preserving the planet. Plus, it has a 2-year guarantee and a 20-year service warranty, so it can easily retire to the spare bedroom once you move into your dream house…

The Olive River Mattress

With the pillowtop, you don’t need to flip your Olive River mattress.

  • Current price: R4,499.00 to R8,999.00
  • Comfort level: Medium
  • Weight Limit: 130 kg per person

Best Mattress for Couples – Restonic iDream Dream Supreme Mattress

For couples, queen and king mattresses are the way to go. It will give both of you room to breathe on those warm summer nights and does nothing to hinder cuddles on cosy winter mornings. It also has enough space to accommodate a baby body or a couple of furry friends.

The Restonic iDream Dream Supreme Mattress is a great choice, because of its medium comfort level. It means that both of you can sleep comfortably, even if you have different sleeping styles or positions. Another great benefit of buying the iDream series is that, for every mattress or bed purchased, 50 plastic bottles are removed from the sea through Restonic’s partnership with the Seaqual Initiative.

The iDream Dream Supreme Mattress

The iDream Dream Supreme has excellent heat-dissipating properties so you and your partner won’t wake up in a puddle of sweat.

  • Current price: R5,399.00 to R10,399.00
  • Comfort level: Medium
  • Weight Limit: 122 kg per person

Shop by Mattress Size at The Mattress Warehouse

Remember, when it comes to mattress size, consider your sleeping habits, the size of your room, and your lifestyle. Now, armed with this guide, you can shop for mattresses with confidence, knowing you’re choosing the one that’s just right for you.

P.S. Compare different mattresses of the same size with our handy mattress compare tool to make sure you get the best out of your online shopping experience.

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