Bed Sizes

Size matters

When it comes to beds, one size does not fit all. Get your bed dimensions wrong and your feet will dangle off the end of the mattress in a Single bed, or you’ll be fighting for space with your partner every night in a Double bed mattress. Either that or you’ll have a lot of empty bed space in a King size bed, and therefore less space in your room for everything else. Don’t forget you have other pieces of furniture to fit in there. So before you figure out what brand of mattress is right for you, follow these steps to make sure you know how big of a bed you’re getting into.

Australian Mattress Size Comparison Charts

Bed SizeDimensions (in cm)Dimensions (in inches)
Single Bed92 x 188 cm36.22” x 74”
Single Long Bed92 x 203 cm36.22” x 80”
King Single Bed107 x 203 cm42.13” x 80”
Double Bed138 x 188 cm54.33” x 74”
Queen Bed153 x 203 cm60.24” 80”
King Bed183 x 203 cm72” x 80”
Super King Bed203 x 203 cm80” x 80”

What bed size should I get?

Step 1 – Understand your Situation

Know the sleeper, know their needs

Ask yourself a few questions – who’s going to sleep in this room? What does that person need?

Certain life stages tend to lead towards certain mattress sizes for practical reasons. For instance, a newlywed couple probably should not be considering a Single bed mattress. So most of the time, you already have a vague idea of what bed size you’re looking for. It’s a toss up between two or three sizes, for example a Double vs Queen, or Single Long vs King Single. Decide on the optimal mattress dimensions for you by considering your individual needs. For example:

  • If you need to maximise living space in a small bedroom, a Single bed size can sleep children to petite adults. Taller adults will be more comfortable with a Single Long mattress.
  • If you’re tall or have a little bit more room, you will probably want a King Single.
  • If you move a lot in your sleep and need more sleep area, a Double should give you plenty of space. A Double mattress will also suit couples in a small bedroom.
  • If you’re a couple in an average sized master bedroom, the size of a Queen bed will give you more sleeping room than a Double bed mattress – or if your room is even larger, you might want to consider a King (unless you’re mobility impaired or elderly, as a King bed will be more difficult to get out of).

What’s your budget for a bed?

Don’t forget to ask yourself this question as well – how much can you spend on this bed? A larger bed will usually cost a bit more, so factor this into your budget!

When you pay for a bed, you’re paying for the materials (and quality of the materials), as well as for the work in making it. Pricier does not necessarily translate to better especially given everyone’s different sleeping needs. However, given that you spend more or less a third of your day in it every day, for years at a time, you should probably be prepared to spend a bit of money on the right mattress when you find it. Remember that choosing the best mattress for you, is about finding the best mattress “system” for your body within your budget.

Budget comparison table

The budget can vary considerably, but below is the average price range with respect to bed sizes.

Mattress SizeMeasurements (in cm)Price Range (in AUD)
Single Mattress92 x 188 cm$300-800
Long Single Mattress92 x 203 cm$450-1000
King Single Mattress107 x 203 cm$500-1000
Double Mattress138 x 188 cm$600-1500
Queen Mattress153 x 203 cm$750-1800
King Mattress183 x 203 cm$900 – a few thousand
Super King Mattress203 x 203 cm$1300 – a few thousand
Cot Mattress69 x 130 cm$150-500

Step 2 – Measure your bedroom

Measure your bedroom and consider how much room you have. Your bed will take up the most space in this room, but you still need to consider other items too, like bedside tables, bookshelves, chairs. Think about whether the bed frame will fit through the hallways and doors.

A master bedroom’s dimensions will range from 3 x 3.1m to 5 x 4.2m (the average is just over 16m2). The measurements of a small “general” bedroom will be around 2.8 x 2.5m to a large “general” bedroom at 4 x 3.3m (the average in Australia is about 10.8m2).

Bed Size vs Room Comparison Chart

Mattress SizeIdeal Room SizeWho’s the sleeper?
Single MattressSmall room (2.8 x 2.5m)Teenagers and adults
Long Single MattressSmall room (2.8 x 2.5m)Tall teenagers and adults
King Single MattressAverage room (3 x 3.6m)Tall teenagers and adults
Double MattressAverage room (3 x 3.6m)Couple who needs a bit more space. Or one adult who tosses and turns a lot
Queen MattressAverage master room (4.2 x 3.9m)Couple with a bit more space to spare. Or one adult who can’t get enough space
King MattressLarge (5 x 4.2m)Couple who needs more bed space
Super King MattressLarge room (5 x 4.2m) or greaterCouple who needs even more bed space, or a bigger bed to balance out the size of the bedroom. Or one adult who likes to perform gymnastics in their sleep

Step 3 – Mark out the room


Now that you’ve narrowed down what sizes you would consider for your bedroom, use masking tape to mark out the bed’s dimensions. Seeing the bed measurements this way will help you visualise how much floor space your bed will take up, and how much space you have for other furniture. The masking tape will also help you see how much clearance you have at the sides and end of your bed. You might want to use masking tape to mark out where other pieces of furniture will go as well, so you can play with different ideas and find the best room layout for you.

Do I Need A Bed Frame?

Your bed frame is what your mattress sits on. Some people do just put their mattress on the ground, but a bed frame does provide certain advantages.

There’s the obvious problem of pests and bugs. Of course, bugs can still climb up bed posts – but it’s less likely to happen that a bug will crawl up one of the four skinny posts than for it to just crawl up your mattress and over your face. I’ve personally had rats partying under my bed. I shudder at the thought of that party potentially having been on my face.

Also, having the bed off the floor allows airflow around the mattress. This airflow keeps you warmer in winter and cooler in summer. Lack of airflow means the mattress will trap moisture on the ground as well, causing the mattress to become musty and the carpet or flooring under it to become discoloured or warped. In this way, a bed frame can assist in the longevity of your mattress (and floors!). Of course, different bed frames offer varying levels of airflow depending on how it’s structured.

And lastly, the bed frame adds height to your bed. The lower a mattress is to the ground, the harder it can be to get in and out of. In other words, a bed frame is essential for anyone who has mobility problems, is older, or has bad knees.

What Kind Of Bed Frame Should I Get?

As you know by now, the mattress, and therefore the bed frame, takes up a good percentage of space in your bedroom. So it makes sense that the bed frame can add a lot to the tone of your room. Have fun with it!

Bed frames are often constructed out of wood or metal. Features such as a headboard or footboard can really change how you feel about your bedroom.If you have an existing bed frame you would like to use, consider its dimensions when marking out measurements with masking tape – and take care to make sure the bed frame will fit through the hallway or door!

Bed frames can actually be space savers. Ensembles are flat bed bases close to the ground, have a minimalistic style, and take no more floor space than the mattress itself. Many bed frames, especially wooden-base beds, have drawers and or other storage features. I remember as a child pulling the family Christmas tree out from the storage area under my parents’ mattress! A friend of mine recently bought a new bed and bed frame, and her headboard has a bookshelf constructed into it. I am so tempted to buy a new bed frame now…

If you’re truly looking to make the most of your floor space, consider your vertical space. Even if the bed frame is simply a raised platform on four posts, many people will keep suitcases and storage boxes under their beds. However, the average ceiling height of bedrooms in Australia is 2.4m, so this gives you a fair bit of vertical space to work with. Bunk beds (especially to allow two or three young children to share a room) and loft beds can be a solution for your situation.


Bedside tables, a closet or set of drawers, a chair for reading, a bookshelf, a floor lamp – these are some of the pieces that can provide form as well as function so that your bedroom is not just a room for you to sleep in, but a cosy room that you can call home. A room for you to relax and unwind in, a quiet space to think and reflect in, a room for you to set your imagination free. As important as sleep is, you don’t live to sleep, you sleep to live. As before, mark out the different pieces of furniture and play with different layouts in your room, to see how your space will work best for you.

Finding your perfect mattress

Your bed should fit your needs, not the other way around. These steps should ensure that your bed size will fit your room and fit you. When you’re ready to find out what other decisions you’ll need to consider when it comes to choosing your mattress, click here!

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