Bed Sizes Chart & Mattress Dimensions

Choosing the right bed size in Australia is important for comfort, bedroom layout, and long-term practicality. A shop mattresses in Australia 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 our how to choose the right mattress for your bedroom size guide to make the best decision.

Australian Bed Sizes Chart: Standard Mattress Dimensions

Compare all standard bed sizes in Australia below:

A queen bed is the most common choice for couples  measuring 153 x 203 cm in Australia because it gives more room than a double while still fitting many standard bedrooms. A king bed gives extra width, while a king single is a practical upgrade for teens, tall children and solo sleepers in smaller rooms.

The main standard mattress sizes in Australia are Single, Long Single, King Single, Double, queen size mattress collection, king size mattress for extra space and Super King.

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.

Bed Size vs Mattress Size: Are They the Same?

People often use “bed size” and “mattress size” to mean the same thing, but they are not always exactly the same.

The mattress size refers to the sleeping surface itself, such as a queen mattress measuring 153 x 203 cm. The bed size can include the full frame, headboard, side rails or storage base, which may be slightly wider or longer than the mattress.

Before buying, check both:

• the mattress dimensions
• the full bed frames that match your mattress size dimensions
• the space needed around the bed
• bedside table and wardrobe clearance
• fitted sheet depth if choosing a thicker mattress
  

This helps avoid buying a mattress or bed frame that technically fits but makes the bedroom harder to use.

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 mattress 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. For a deeper size breakdown, read our queen mattress size guide.

• cm: 153 x 203
• mm: 1530 x 2030
• inches: 60" x 80"

King Mattress Size

A standard king size mattress for couples needing extra space measures 183 x 203 cm.. 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"

Popular Bed Size Comparisons

Single vs King Single

A Single mattress is best for young children, bunk beds and very small rooms. A King Single gives extra width and length, making it more suitable for teenagers, taller children and solo adults who want more comfort without moving up to a Double.

Double vs Queen

A Double mattress gives more room than a King Single and can suit solo adults or guest rooms. A Queen mattress is usually the better everyday choice for couples because it gives more width and length, while still fitting many Australian bedrooms.

Queen vs King

A Queen mattress is the most versatile size for many homes. A King mattress gives couples extra width and more personal space, but it needs a larger bedroom and larger bedding.

King vs Super King

A King mattress is already spacious for most couples. A Super King gives maximum sleeping space but works best in large bedrooms where there is still enough room for bedside tables and walkways.

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 furniture layout and spacing 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. If you are still comparing comfort, support and budget, check our complete mattress buying guide for Australian homes.

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, always check your room layout and bed frame size compatibility.

• 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. If mattress height is part of your decision, our guide on how thick a mattress should be explains thickness, comfort layers and fitted sheet depth in more detail.

Final Thoughts

A queen size mattress is the most versatile option for many homes, while a King or super king mattress for maximum space gives extra comfort for couples.

Before buying, always check mattress dimensions, room measurements, and bed frame sizing guide.

FAQs

What is the queen bed size in Australia?

A standard queen bed mattress in Australia measures 153 x 203 cm, or 1530 x 2030 mm. It is one of the most popular sizes for couples and main bedrooms.

What is the double bed size in Australia?

A standard double mattress in Australia measures 138 x 188 cm, or 1380 x 1880 mm. It is a good option for solo adults, guest rooms and smaller bedrooms.

What is the king bed size in Australia?

A standard king mattress in Australia measures 183 x 203 cm, or 1830 x 2030 mm. It gives couples more width than a queen mattress.

Is a king single longer than a single?

Yes. A king single mattress is both wider and longer than a standard single. A single measures 92 x 188 cm, while a king single measures 107 x 203 cm.

What size bed is best for a small bedroom?

For a small bedroom, a Single, King Single or Double usually works best. A Queen can fit in some smaller rooms, but only if there is still enough walking space around the bed.