Australia Bed Sizes & Mattress Dimensions Guide

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It’s Time to Buy a new mattress!

Picking the appropriate bed and mattress size for your space is an important long-term decision that should be carefully considered. So we have put together a comprehensive guide to find a mattress that fits the size of your bed as well as needs. 

Keep in mind that the measurements below are specific to the Australian market.

Mattress Sizes Chart Australia (AU)

Size NameDimensions (cm)Dimensions (Feet/Inch)
Super King203 x 203cm6’8″ x 6’8″ (80″ x 80″)
King183 x 203cm6’0″ x 6’8″ (72″ x 80″)
Queen153 x 203cm5’0″ x 6’8″ (60″x 80″)
Double138 x 188 cm4’6″ x 6’2″ (54″x 74″)
King Single107 x 203cm3’6″ x 6’8″ (42″ x 80″)
Long Single92 x 203cm3’0″ x 6’8″ (36″ x 80″)
Single92 x 188cm3’0 x 6’2″ (36″ x 74″)
Baby Cot69 X 130cm2’3” x 4’3” (27″ x 51″)
Australia Bed Mattress Size Chart

Standard Australian Bed and Mattress Dimensions

One of the first steps while choosing a mattress is making sure it matches the size of your bed
frame. When choosing both of these, also consider the size of your bedroom to make sure the bed is the right size for your space.

1) Super King size bed & mattress dimensions

Super King size bed & mattress dimensions

A super king bed and mattress is 203cm wide and 203cm long, which is the equivalent of 6ft 8in by 6ft 8in in imperial measurements. This is by far the largest Australian mattress size available, providing the most luxurious space. And if you value a great amount of breathing and wiggle room while you sleep, or have kids sneak into your bed early in the morning, the super king provides the type of space you desire.

  • Best mattress for: 2 adults with extra breathing room, as well as pets or children.
  • Recommended room size: 12ft wide by 12ft long.

2) King size bed & mattress dimensions

King size bed & mattress dimensions

A king bed and mattress is 183cm wide and 203cm long. This is equivalent to 6ft by 6ft 8in in imperial measurements. A king mattress and bed is the largest traditional bed available in Australian measurements. Though not as wide as the super king, it provides ample room for any standard mattress, making it great to stretch out and move around throughout the night.

  • Best mattress for: 2 adults with breathing room or 1 adult active sleeper who values extra breathing room.
  • Recommended room size: 12ft wide by 12ft long.

3) Queen size bed & mattress dimensions

Queen size bed & mattress dimensions

In metric units, a queen size bed and mattress is 203cm wide and 203cm long. In imperial units, this bed measures 5ft wide by 6ft 8in long. A queen bed and mattress is perfect for a single active sleeper, but also works well for two people. A single sleeper would comfortably enjoy 153cm of sleeping space while two sleepers would have about 75cm of space each.

  • Best mattress for: 1 single active sleeper or 2 adults with some breathing room.
  • Recommended room size: 10ft wide by 10ft long.

4) Double size bed & mattress dimensions

Double size bed & mattress dimensions

A double bed and mattress is 138cm wide and 188cm long, which is the equivalent of 4ft 6in by 6ft 2in on the imperial scale. The double mattress is the most common bed size and is mostly used by individual sleepers due to affordability. Double mattresses are 46cm larger in width than a standard single bed, making it a great size for sleeping with a pet, body pillow, or an additional companion, if necessary. This is also a great bed and mattress when upgrading a teenager out of a single bed.

  • Best mattress for: One individual looking for a good price while maintaining comfort.
  • Recommended room size: 10ft wide by 10ft long.

5) King Single size bed & mattress dimensions

King Single size bed & mattress dimensions

In metric units, an Australian king single bed and mattress is 107cm wide and 203cm long. This is the equivalent of 3ft 6in by 6ft 8in in imperial measurement. King singles are great options for tall single sleepers who value length and breathability, as the king single is longer than a standard double bed and mattress. Make sure to find a bed frame that best accommodates the king single bed and mattress, as it does not usually match bed frames for a standard single frame. King single beds are also used to make a split king bed, depending on the size of your bed frame. If two sleepers have different mattress preferences, this is a great option to accommodate both needs.

  • Best mattress for: One tall sleeper with room to move.
  • Recommended room size: 9ft wide by 10ft long.

6) Long Single size bed & mattress dimensions

Long Single size bed & mattress dimensions

A long single bed and mattress is 92cm wide by 203cm long in metric units. The sizing converts to 3ft by 6ft 8in in imperial measurements. Australian long single beds and mattresses are great options for tall sleepers who value length over width, as the king single is longer than a standard double bed and mattress. Make sure to find a bed frame that best accommodates the long single bed and mattress, as it does not always match bed frames for a standard single frame.

  • Best mattress for: One tall sleeper who does not move around a lot.
  • Recommended room size: 9ft wide by 10ft long.

7) Single size bed & mattress dimensions

Single size bed & mattress dimensions
In imperial units, the single bed and mattress is 3ft wide by 6ft 2in long, which is an equivalent to 92cm by 188cm on the metric scale. This mattress is perfect for older children and teenagers as it is the smallest adult mattress on the Australian market. Single beds are great for bunks beds, college dorm rooms, and quaint bedrooms. For sleepers with little space or budget, the single mattress and bed is a great way of maintaining quality without needing the price or space for a larger mattress.
 
  • Best mattress for: Older children, teenagers, and college students.
  • Recommended room size: 9ft wide by 9ft long.

8) Baby Cot size bed & mattress dimensions

Baby Cot bed & mattress dimensions

A standard baby cot bed and mattress is 69cm wide by 30cm long. In imperial dimensions, the baby cot is 2ft 3in by 4ft 3in. As suggested, baby cots are the only mattress in the Australian market designed specifically for babies. These beds are the best fit for children between the ages of one and three. Baby cots are typically the same size as toddler beds; to save money, consider buying a baby cot that can later be converted into a toddler bed when your child gets older.

 

  • Best mattress for: Babies ages one to three.
  • Recommended room size: As this is the smallest option in the market, a baby cot fits comfortably into almost any bedroom size.

Questions to Ask Yourself When Purchasing a Bed:

  1. How many individuals are going to share the bed, including pets, if any?
  2. What is the age of the individual(s) sleeping in the bed?
  3. Do you value wiggle room, length, or both?
  4. What is the size of your bed frame? What mattress size would fit in that frame?
  5. How large is your bedroom?
  6. What is your budget? How much would you like to spend on a mattress? For cheaper mattress options in Australia, check this guide
Reviewing these questions prior to purchasing a bed and mattress will make the selection process much easier. Reviewing the above bed and mattress dimensions will also help to answer some of these questions for you and make the buying process easier.
 
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