Bed Sizes in Australia: Mattress Dimensions & Size Guide
Choosing the right bed size in Australia is important for comfort, bedroom layout, and long-term practicality. A mattress that is too small can feel restrictive, while one that is too large can make your room feel crowded and harder to use.
This guide shows all standard Australian bed sizes with exact mattress dimensions in cm, mm and inches . You can compare Single, Long Single, King Single, Double, Queen, King and Super King sizes in one place, then use the room size guide to choose the best fit for your bedroom .
Australian Bed Sizes Chart: Standard Mattress Dimensions
Compare all standard bed sizes in Australia below:
| Mattress Size | Dimensions (cm) | Dimensions (mm) | Inches | Best For |
|---|---|---|---|---|
| Single | 92 x 188 | 920 x 1880 | 36" x 74" | Kids, small rooms |
| Long Single | 92 x 203 | 920 x 2030 | 36" x 80" | Tall sleepers |
| King Single | 107 x 203 | 1070 x 2030 | 42" x 80" | Teens, solo adults |
| Double | 138 x 188 | 1380 x 1880 | 54" x 74" | Solo adults |
| Queen | 153 x 203 | 1530 x 2030 | 60" x 80" | Couples |
| King | 183 x 203 | 1830 x 2030 | 72" x 80" | Couples who want extra space |
| Super King | 203 x 203 | 2030 x 2030 | 80" x 80" | Large bedrooms |
The main standard mattress sizes in Australia are Single, Long Single, King Single, Double, Queen , King and Super King. The most popular size is Queen , measuring 153 x 203 cm , because it suits most couples and fits comfortably in many standard bedrooms.
All mattress dimensions above follow standard Australian sizing. Small variations can happen between brands, so it is always worth checking the exact product measurements before buying.
Mattress Size Guide Australia
Single Mattress Size
A standard Single mattress size in Australia measures 92 x 188 cm or 920 x 1880 mm . It is a practical choice for children, bunk beds, trundles, guest rooms, and smaller bedrooms.
A Single mattress is compact, affordable, and easy to fit into tighter spaces. It works best for children and light use, but many adults may find it too narrow for everyday comfort.
- cm: 92 x 188
- mm: 920 x 1880
- inches: 36" x 74"
Long Single Mattress Size
A standard Long Single mattress size measures 92 x 203 cm or 920 x 2030 mm . It has the same width as a Single but adds extra length, which makes it better for taller sleepers.
A Long Single works well in narrow rooms where a wider mattress may not fit. It is also a common option for guest rooms and split king setups.
- cm: 92 x 203
- mm: 920 x 2030
- inches: 36" x 80"
King Single Mattress Size
A standard King Single mattress size measures 107 x 203 cm or 1070 x 2030 mm . It is longer and wider than a standard Single, giving more personal space without taking up as much room as a Double or Queen.
A King Single is one of the best choices for teenagers, taller sleepers, and solo adults who want more comfort in a smaller bedroom.
- cm: 107 x 203
- mm: 1070 x 2030
- inches: 42" x 80"
Double Mattress Size
A standard Double mattress size in Australia measures 138 x 188 cm or 1380 x 1880 mm . It is wider than a King Single and suits solo adults who want extra room to move during sleep.
A Double can also work for couples, but for everyday shared sleeping it may feel tight. It is often a better fit for guest rooms, smaller bedrooms, and solo sleepers.
- cm: 138 x 188
- mm: 1380 x 1880
- inches: 54" x 74"
Queen Mattress Size
A standard Queen mattress size in Australia measures 153 x 203 cm or 1530 x 2030 mm . This is the most popular mattress size in Australia and is the most common choice for couples.
A Queen offers one of the best balances between comfort, room fit, and bedding availability. It gives enough sleeping space for most couples while still fitting comfortably in many standard bedrooms.
- cm: 153 x 203
- mm: 1530 x 2030
- inches: 60" x 80"
King Mattress Size
A standard King mattress size measures 183 x 203 cm or 1830 x 2030 mm . It has the same length as a Queen but offers more width, making it a strong choice for couples who want extra sleeping space.
A King mattress is ideal if one or both sleepers move around a lot during the night, or if children or pets sometimes share the bed.
- cm: 183 x 203
- mm: 1830 x 2030
- inches: 72" x 80"
Super King Mattress Size
A standard Super King mattress size measures 203 x 203 cm or 2030 x 2030 mm . This is the largest standard bed size in Australia and is best suited to large bedrooms.
A Super King is ideal for households that want maximum sleeping space, whether for comfort, family co-sleeping, or a more spacious bedroom setup.
- cm: 203 x 203
- mm: 2030 x 2030
- inches: 80" x 80"
What Mattress Size Do You Need?
The right mattress size depends on how many people will use the bed, how much sleeping space you want, and how large your bedroom is.
- For kids or small rooms: Single or King Single
- For tall solo sleepers: Long Single or King Single
- For solo adults: King Single or Double
- For couples: Queen is usually the minimum, while King gives more space
- For maximum space: Super King
If you are choosing a mattress for long-term daily use, it is usually worth thinking ahead. A slightly larger size can
often feel much more comfortable over time if your room allows for it.
Average Australian Bedroom Sizes: What Bed Fits Best?
Choosing the right bed size is not only about mattress dimensions. It is also about how comfortably the bed fits into your room once you include bedside tables , wardrobes, drawers , and walking space.
Small Bedroom Size Guide
A small bedroom is often around 3.0 x 3.6 m or smaller. In this type of room, a Single , Long Single , or King Single usually works best. These sizes leave more usable floor space and help the room feel less cramped.
Average Bedroom Size Guide
An average Australian bedroom is commonly around 4.2 x 3.9 m . This usually gives enough room for a Double , Queen , or even a King , depending on how much furniture you have and how much space you want around the bed.
Large Bedroom Size Guide
A large bedroom is often around 5.0 x 5.0 m or more. This gives you more flexibility to choose a King or Super King , while still leaving room for bedside tables, storage, and comfortable walkways.
How Much Space Should You Leave Around a Bed?
As a general guide, try to leave around
60 to 90 cm
of walking space around the bed where possible. This helps the room feel easier to move around in and gives better
access to doors, wardrobes, and windows.
How to Measure Your Bedroom for a Mattress
Before buying a mattress , measure your bedroom carefully to make sure the size will work in real life, not just on paper.
- Check the full room dimensions, not just the floor area where the bed will sit
- Consider wardrobes, doors, drawers, and bedside tables
- Leave enough walking space around the bed
- Measure your current bed frame if you are only replacing the mattress
- Check whether a deeper mattress will affect fitted sheet depth or bedside height
This will help you avoid buying a mattress that technically fits but makes the room awkward to use.
Final Thoughts
The best mattress size in Australia depends on your room size, sleeping style, and comfort needs. A Queen mattress is the most versatile option for many homes, while a King or Super King gives extra room for couples and families.
Before buying, always check the exact mattress dimensions , room measurements, bed frame size , and bedding fit . That will help you choose a mattress that feels comfortable and works properly in your space.