The standard double bed size in centimetres in Australia is approximately 138 cm wide × 188 cm long. These measurements refer to the mattress itself rather than the complete bed frame.
In simple terms, an Australian Double sits between a King Single and a Queen. It offers substantially more width than a Single while taking up less floor space than a Queen, making it a practical choice for solo adults, teenagers, guest bedrooms and compact homes.
Small variations can occur between manufacturers, so it is always sensible to check the exact mattress specifications before purchasing a frame or bedding.
The main reason Australians choose a Double is its balance of sleeping space and practicality.
At approximately 138 × 188 cm, a Double gives one person plenty of room to stretch out without requiring the larger footprint of a Queen. It can also work for two people where bedroom space is limited, although most couples will find a Queen more comfortable for everyday sleeping.
The relatively compact dimensions make a Double particularly useful in:
The standard Australian Double mattress is approximately 138 cm wide.
This is around 46 cm wider than a standard Single mattress, which is approximately 92 cm wide.
The standard Double mattress is approximately 188 cm long.
This is the same approximate length as a Single, but 15 cm shorter than a King Single or Queen.
For taller sleepers, this difference is important when deciding between a Double and a longer mattress size.
The height of a Double mattress is not fixed.
Mattress thickness varies according to construction, materials and design. A basic foam mattress may be considerably thinner than a premium hybrid or pillow-top mattress.
Thickness is particularly important when buying fitted sheets and mattress protectors.
| Bed Size | Approximate Dimensions |
|---|---|
| Single | 92 × 188 cm |
| King Single | 107 × 203 cm |
| Double | 138 × 188 cm |
| Queen | 153 × 203 cm |
| King | 183 × 203 cm |
| Super King | 203 × 203 cm |
These are standard Australian mattress measurements and should be used as a starting point. Exact dimensions can vary slightly between brands.
A King Single is approximately 107 × 203 cm, while a Double is approximately 138 × 188 cm.
The Double is therefore:
If you are a taller solo sleeper, the additional length of a King Single may be more valuable. If you prefer additional width, the Double offers considerably more room from side to side.
A Queen mattress is approximately 153 × 203 cm.
Compared with a Double, a Queen provides around:
That difference can be significant for couples.
A Double can be a smart space-saving option, while a Queen generally provides greater everyday comfort for two adults.
Yes, two adults can sleep on a Double, but it can feel relatively snug.
At approximately 138 cm wide, two people would have around 69 cm of width each if the space were divided equally.
For occasional guest use, this may be perfectly practical. For couples sleeping together every night, a Queen may provide a more comfortable amount of personal space.
Understanding the double bed size in centimetres is only part of planning the room.
The mattress itself measures approximately 138 × 188 cm, but you also need room for the bed frame and comfortable movement.
Consider space for:
A Double can be a particularly useful choice when a Queen would leave the room feeling crowded.
This distinction is essential.
The mattress may measure approximately 138 × 188 cm, while the complete bed frame can be considerably larger.
A frame may add space for:
If you're working with limited floor space, always check the assembled external dimensions of the bed frame rather than relying solely on the mattress size.
Mark out an area of approximately 138 × 188 cm to understand how the mattress will fit.
Then add the expected dimensions of the bed frame.
At 188 cm long, a Double is shorter than a King Single and Queen.
Taller sleepers may prefer a longer mattress.
A Double is particularly well suited to one adult or teenager.
For two adults, consider whether the additional width of a Queen would be worthwhile.
A Double storage bed can be useful in compact bedrooms, providing additional space for bedding, clothing and seasonal items.
Make sure fitted sheets, mattress protectors and other bedding are designed for the Australian Double dimensions.
A Double provides significantly more room than a Single.
It offers additional space as teenagers grow and can remain useful into adulthood.
A Double can accommodate guests without requiring the largest bedroom.
Its smaller footprint can leave more room for wardrobes, desks and other furniture.
The compact dimensions work well in many smaller Australian homes.
Double beds can be dressed with layered bedding, throws, cushions and statement bedheads.
Storage bases can turn unused space beneath the mattress into practical organisation.
When considering the double bed size in centimetres, think about how the complete room will function rather than focusing only on the mattress.
For a guest room, a Double can provide an excellent combination of comfort and practicality. Pair it with a compact bedside table, soft lighting and layered bedding for a welcoming atmosphere.
For a teenager's bedroom, consider a Double bed with integrated storage to maximise usable space.
Warm timber, textured upholstery and neutral bedding can give a Double bed a sophisticated Australian aesthetic without making a smaller room feel crowded.
House of Isabella Australia offers distinctive designs, a large in-stock catalogue, fast delivery Australia-wide, East and West Coast warehouses and Australian-based customer care.
Buy Now, Pay Later options including Afterpay and Zip can also provide flexibility when planning a bedroom update.
Storage beds continue to be useful where bedrooms need to perform several functions.
Natural timber finishes create a relaxed, welcoming foundation.
Soft bedheads add comfort and visual impact while helping the bed become a focal point.
Curved bedheads and rounded bedside furniture can soften the strong rectangular proportions of the mattress.
Cream, beige, oatmeal and earthy shades create a calm bedroom environment.
Linen-look fabrics, woven accessories and timber add tactile depth.
Layered bedding, symmetrical lighting and carefully selected accessories can give a Double bedroom a polished, luxurious feel.
Use a statement bedhead, artwork or carefully styled bedding to give the Double visual importance.
A few well-selected cushions and a folded throw are usually enough to create depth without overcrowding the bed.
Wall-mounted lighting can free up bedside surfaces and help compact rooms feel more open.
A strategically positioned mirror can reflect light and contribute to a greater sense of spaciousness.
Keep bedside tables and surrounding furniture appropriately scaled to the room.
Warm neutrals and natural tones can make the room feel calm and connected.
The double bed size in centimetres refers to the mattress, not the bedding.
A fitted sheet should be made for an Australian Double mattress and should also accommodate the mattress thickness.
A Double quilt or doona will be larger than the mattress because it needs to cover the sleeping surface and extend over the sides.
Always check the manufacturer's measurements, particularly when buying bedding from international brands.
A standard Australian Double mattress is approximately 138 cm wide × 188 cm long.
Approximately 1,380 × 1,880 mm.
It is wider but shorter. A Double is approximately 138 × 188 cm, while a King Single is approximately 107 × 203 cm.
Yes. A Queen is approximately 153 × 203 cm, while a Double is approximately 138 × 188 cm.
Yes, although it can feel relatively compact. A Queen generally provides more space for couples.
Yes. Its generous width makes it a comfortable long-term option for many teenagers.
No. Mattress dimensions are relatively standard, but bed frames vary depending on their construction, headboard, storage and other features.
The key measurement to remember for the double bed size in centimetres is approximately 138 × 188 cm.
This compact yet generous size makes a Double particularly useful for solo adults, teenagers, guest rooms and smaller bedrooms. It offers considerably more width than a Single while taking up less space than a Queen.
Before buying, measure both the mattress area and the complete bed-frame footprint. Consider your height, sleeping arrangements, available walking space and bedding requirements.
With thoughtful proportions and carefully chosen furniture, a Double bed can create a bedroom that feels comfortable, practical and beautifully styled.
Brand and collection names mentioned in this glossary are included purely for descriptive and contextual purposes. House of Isabella Australia is not affiliated with, endorsed by, or associated with the brands mentioned, and all trademarks remain the property of their respective owners.
Disclaimer: All trademarks, brand names and product names mentioned on this website are the property of their respective owners. Any references are made for identification, informational or comparative purposes only, and do not imply any affiliation, endorsement, sponsorship or authorisation.
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