Mattress Size Guide
SleepMaker Bed and Mattress Size Guide
Sleep helps to restore and heal the body. Good sleep is essential and when you aren't sleeping well, your health takes a blow and you run yourself down. When you aren't sleeping well and there's no external factors disrupting you, then you should ask yourself - is it my mattress? Your mattress might be too old, too cramped or too hot and might not suit you or the way that you sleep. At SleepMaker, we believe mattress size plays a pivotal role in getting a good night's sleep and have created this handy mattress size guide to help you improve your sleep.
Standard Bed and Mattress Sizes
Your best bed size might suit you and the whole family but not suit your bedroom. When choosing your mattress size, you also need to consider the size of the room. All of our mattresses are proudly hand made here in Australia. Because of this and the soft and compressible nature of the materials we use mattresses may vary 1-2cm from the size guide. Variation within this range is considered normal, with the measurements given in the size guide intended to be indicative.
Check out our mattress dimensions below:
SleepMaker Mattress Sizes
| AU Mattress Size | Metric Measurements (Cm) | Imperial Measurements (Inches) |
|---|---|---|
| Single | 92 x 188 | 36.2″ x 74″ |
| Long Single | 92 x 203 | 36.2″ x 79.9″ |
| King Single | 107 x 203 | 41.5″ x 79.9″ |
| Double | 137 x 188 | 53.9″ x 79.9″ |
| Queen | 153 x 203 | 60″ x 79.9″ |
| King | 183 x 203 | 72″ x 79.9″ |
| Super King | 203 x 203 | 79.9″ x 79.9″ |
What is the best size mattress for you?
Finding the best sized mattress for you comes down to your height, weight and who you're sharing your bed with. There are a few things to consider when thinking about which bed size to get so that everyone gets enough room in the bed.
- How many loved ones will be sleeping with you – a partner, a child, a pet? Are they sleeping regularly with you?
- How tall or heavy are you? What size is your regular sleeping partner?
- Do you have kids or big fluffy friends who like to spend time in bed with you?
Need more help? Here's a few more bed tips to check out.
| The Sleeper/s | Single | Single XL | King Single | Double | Queen | King | Super King |
|---|---|---|---|---|---|---|---|
| A Child | ★☆☆ | ★★☆ | ★★★ | ||||
| A Teenager | ★☆☆ | ★★☆ | ★★★ | ★★★ | |||
| A Guest | ★☆☆ | ★☆☆ | ★★☆ | ★★★ | ★★★ | ||
| 2+ Guests | ★☆☆ | ★★☆ | ★★★ | ||||
| An Adult | ★☆☆ | ★★☆ | ★★★ | ★★★ | ★★★ | ||
| 2x Adults | ★☆☆ | ★★☆ | ★★★ | ★★★ | |||
| 2x Adults + Pets | ★★☆ | ★★★ | ★★★ | ||||
| 2x Adults + Kids | ★★☆ | ★★★ | |||||
| The Whole Family | ★★★ |
Key: ★☆☆ Good ★★☆ Very Good ★★★ Best
Mattress Size Guide

Single Mattress Size - Everyone's first mattress
92cm x 188cm / 36.2″ x 74″
One of our smallest beds available, the single sized mattress is great for your child or last minute guest needing a bed for the night.

Long Single Mattress Size - Best value for growing kids
92cm x 203cm / 36.2″ x 79.9″
An ideal first bed that's long lasting and built to fit your growing child. With a length of 203cm, the long single mattress size won't be outgrown. As an added bonus, you can put together two long single mattresses and make a customisable king bed for sleepers of different needs or for adjustable bases.

King Single Mattress Size - Perfect step up from a single
107cm x 203cm / 41.5″ x 79.9″
The perfect mattress for the prince or princess in your home. This bed is long enough for growing kids or solo adults and wide enough to give enough room to move around at night. The king single mattress size is also ideal for the guest room when you don't have lots of space.

Double Mattress Size - A generous size for an adult
137cm x 188cm / 53.9″ x 79.9″
A double mattress is an ideal size for your growing teen or if you're living on your own and don't have the biggest bedroom. This mattress size is also a great option for guests.

Queen Mattress Size - the minimum choice for couples
153cm x 203cm / 60″ x 79.9″
A good starting point for couples where bedroom space is limited. The most popular mattress for couples, a queen size mattress fits in almost every bedroom and has just enough room for two.

King Mattress Size - get a lot more sleep space between you and your partner
183cm x 203cm / 72″ x 79.9″
A bed with extra legroom, the super king size mattress caters to couples that need a little extra space. Big enough for the family dog or a child needing cuddles.

Super King Mattress Size - for the largest mattress available on the Aussie market
203cm x 203cm / 79.9″ x 79.9″
Our biggest bed, the California king size mattress is big enough for the whole family! At over 2m wide, it's big enough for you, your partners, your kids and your fluffy friends! If you've got enough space in your bedroom, this is the ideal mattress size for growing families.
How to Measure Your Bedroom for a Bed
Ensure you get the best SleepMaker bed experience by making sure your new mattress is the right fit for your bedroom and lifestyle. Whether it's a single size mattress or super king, your bed size makes a huge difference. A bed that's too big for the room will feel cramped and uncomfortable no matter what size mattress you'd prefer, so having one that fits your home will better fit your lifestyle. Got the right mattress size fit? Now it's time to choose one.
Mattress Size Guide FAQs
What Bed sizes are there in Australia?
Australia’s standard bed sizes include Single, Long Single, King Single, Double, Queen, King and Super King. Each size suits different sleep needs, room sizes and lifestyles. Whether you’re furnishing a child’s bedroom, upgrading your guest room or creating more space for couples, there’s a mattress size to match. SleepMaker offers a range of mattresses across all standard Australian bed sizes.
What is the largest bed you can buy in Australia?
The largest standard bed size available in Australia is a Super King. Measuring approximately 203cm x 203cm, it offers generous space for couples, families with young children or anyone who loves extra room while sleeping. A Super King mattress is ideal for larger bedrooms and creates a spacious, luxurious sleep setup.
Is a queen-size bigger than a king?
No, a queen-size bed is smaller than a king bed. In Australia, a queen mattress measures around 153cm x 203cm, while a king measures approximately 183cm x 203cm. Both offer the same length, but a king provides extra width, giving couples more personal sleeping space and comfort through the night.
What is a full-size bed called in Australia?
In Australia, a “full-size” bed is commonly known as a Double bed. Double mattresses measure approximately 137cm x 188cm and are a popular option for teenagers, solo sleepers wanting extra room or smaller guest bedrooms. They provide more width than a single without taking up as much space as a queen. But they are shorter than a king single or a queen size!
Is a king bed wider or longer than a queen?
A king bed in Australia is wider, not longer, than a queen bed. Both sizes are generally 203cm long, but a king mattress is 30cm wider. That extra width makes a noticeable difference for couples, especially if one partner moves during sleep or prefers more personal space.
What's the most comfortable mattress size?
The most comfortable mattress size depends on your sleep style, room size and whether you share your bed. Queen and King mattresses are popular choices because they offer plenty of space for movement and comfort. If you sleep with a partner, children or pets, upgrading to a larger mattress can make a big difference to sleep quality.
What bed size is best for couples?
Queen and king mattresses are the most popular bed sizes for couples in Australia. A queen offers a balance of comfort and space efficiency, while a king gives each sleeper more room to move freely overnight. The best option depends on your bedroom size, sleeping habits and how much personal space you prefer while sleeping.
Can two people sleep comfortably in a queen?
Yes, two people can comfortably sleep on a queen-size mattress. Queen beds are one of Australia’s most popular choices for couples because they provide a practical balance between sleeping space and room layout. If you or your partner move a lot during sleep, a king mattress may offer even greater comfort.
What are all the bed sizes in centimetres?
Australian bed sizes in centimetres are approximately:
- Single: 92cm x 188cm
- Long Single: 92cm x 203cm
- King Single: 107cm x 203cm
- Double: 137cm x 188cm
- Queen: 153cm x 203cm
- King: 183cm x 203cm
- Super King: 203cm x 203cm
What size is a single bed in Australia?
A standard single bed in Australia measures approximately 92cm wide by 188cm long. Single mattresses are a popular choice for children, teenagers, guest rooms and smaller bedrooms. They offer a compact sleep solution while still providing comfortable support for solo sleepers.
Need more help?
Buying a new bed doesn't have to be so hard. Read the SleepMaker bed buying guide to find your perfect bed.