The standard double bed mattress dimensions cm in Australia are approximately 138 cm wide × 188 cm long. This is the measurement of the mattress itself, not the complete bed frame. Some manufacturers may have slightly different dimensions, so checking the individual product specifications is always recommended.
In simple terms, an Australian Double mattress gives you substantially more width than a Single or King Single while taking up less space than a Queen. It is particularly popular for solo adults, teenagers, guest bedrooms and compact bedrooms.
The main reason Australians choose a Double mattress is its balance between sleeping space and room efficiency.
At approximately 138 × 188 cm, a Double provides considerably more width than a Single without requiring the larger footprint of a Queen.
For one adult, this can feel comfortably spacious. It can also be used by two people, although many couples find a Queen more comfortable for everyday sleeping because it provides additional width and length.
A Double can therefore be a practical choice when bedroom space is limited but a Single feels too restrictive.
The standard Australian Double mattress is approximately 138 cm wide.
That gives a solo sleeper plenty of room to change position, stretch out and sleep comfortably.
A Double mattress is approximately 188 cm long.
This is the same general length as a standard Australian Single mattress but shorter than a King Single or Queen.
For taller adults, length should therefore be considered carefully before choosing a Double.
Thickness is separate from the standard Double footprint.
Different mattresses can have different heights depending on their construction. Foam, pocket spring, hybrid, latex and pillow-top mattresses may all have different profiles.
This is particularly important when purchasing fitted sheets or mattress protectors.
| Mattress 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 useful Australian sizing guidelines. Minor differences can occur between manufacturers, so always check the exact dimensions of the mattress you are considering.
A Single mattress is approximately 92 × 188 cm, while a Double is approximately 138 × 188 cm.
The main difference is width.
A Double gives you approximately 46 cm more width while maintaining the same approximate 188 cm length.
For a growing teenager or solo adult, that extra space can make a noticeable difference in comfort.
An Australian King Single is approximately 107 × 203 cm.
Compared with a King Single, a Double is:
This creates an interesting choice.
If you are taller, the extra 15 cm of length offered by a King Single may be more valuable. If you prefer additional room from side to side, the Double provides considerably more width.
A Queen mattress is approximately 153 × 203 cm.
Compared with a Double, a Queen provides:
For a solo sleeper, the Double can offer an excellent balance of space and floor area.
For two adults sharing the mattress every night, the additional dimensions of a Queen can provide noticeably more personal sleeping space.
A Double can provide generous sleeping space for one adult without taking up as much room as a Queen.
It can be a practical long-term bedroom choice as a teenager grows.
A Double can provide comfortable accommodation without requiring the largest available bedroom.
If a Queen would make the room feel crowded, a Double can preserve valuable floor space.
The smaller footprint can work well in apartment bedrooms and other space-conscious homes.
Two adults can share a Double, although it may feel relatively cosy compared with a Queen.
Before purchasing, measure the available space for the mattress and bed frame.
Remember that the mattress is only part of the total footprint.
At approximately 188 cm long, a Double may not provide enough length for every taller sleeper.
If you are tall, compare it with a King Single or Queen before making your decision.
If you sleep alone and like extra room, a Double can be an excellent choice.
If two people will share the mattress regularly, think carefully about whether 138 cm of width will feel comfortable.
A deeper mattress may require deeper fitted sheets and can change the overall height of the bed.
Make sure the frame is designed for the relevant Australian Double mattress dimensions.
Never rely on the word "Double" alone when purchasing furniture for a tightly fitted space.
This distinction is essential.
Double bed mattress dimensions cm refer to the mattress itself, approximately 138 × 188 cm.
The overall bed frame can be larger because it may include:
If you have limited bedroom space, check the assembled external dimensions of the bed frame rather than simply using the mattress dimensions.
A frame can add several centimetres to the width or length, and some designs can add considerably more.
A Double provides more sleeping room without taking up the floor area of a Queen.
It offers significantly more width than a Single or King Single.
It provides a flexible sleeping option without dominating a smaller room.
The additional width makes it a comfortable upgrade from a smaller bed.
Double beds can be styled with layered bedding, cushions, throws and decorative bedheads.
A Double storage bed can create valuable additional space underneath the mattress.
The footprint can make it easier to accommodate other furniture such as wardrobes, desks and bedside tables.
When considering double bed mattress dimensions cm, look at the whole bedroom rather than the mattress in isolation.
A Double bed can work beautifully in a guest room or teenager's bedroom when paired with compact bedside furniture, layered bedding and carefully chosen lighting.
For a warm Australian interior, natural timber, soft neutral fabrics and tactile throws can create a relaxed atmosphere. An upholstered bedhead can make the Double feel more substantial without requiring a much larger frame.
Collections such as Florabelle Collection, Zaffero, Emac & Lawton, Gallery Home, Café Lighting & Living and OneWorld Collection can provide contextual inspiration when coordinating bedroom furniture and decorative accessories.
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 updating a bedroom.
Double beds with drawers or lift-up storage can make smaller bedrooms more efficient.
Natural and warm timber tones create a relaxed foundation for Australian bedroom styling.
Soft upholstered bedheads add comfort and visual depth without requiring a larger mattress.
Rounded bedheads and curved bedside furniture can make compact rooms feel softer and more welcoming.
Cream, beige, oatmeal, taupe and earthy tones create a calm and versatile bedroom palette.
Linen-look fabrics, woven details and timber bring warmth without overwhelming a smaller room.
Layered bedding, balanced bedside lighting and restrained accessories can create a sophisticated hotel-inspired look.
Even a Double mattress can anchor the bedroom beautifully.
A statement bedhead or carefully positioned artwork can give the bed greater visual presence.
Combine smooth bedding with textured cushions, a knitted or woven throw and natural materials.
Avoid filling the bed with too many cushions or using bedside furniture that overwhelms the available floor space.
Wall lights or pendants can free up bedside surfaces and are particularly useful in compact rooms.
A well-positioned mirror can reflect light and contribute to a greater sense of openness.
A cohesive palette of warm neutrals can make the room feel calm and spacious.
Remember that mattress dimensions and bedding dimensions are not the same.
A fitted sheet should be designed for an Australian Double mattress and should accommodate its depth.
A Double quilt or doona is larger than the mattress because it needs to cover the sleeping surface and provide an appropriate drop over the sides.
Always check the manufacturer's exact measurements, especially when purchasing bedding from international brands.
The standard Australian Double mattress is approximately 138 cm wide × 188 cm long.
Approximately 1,380 × 1,880 mm.
A Double is wider, at approximately 138 cm compared with 107 cm for a King Single, but it is shorter.
Yes. A Queen is approximately 153 × 203 cm, compared with approximately 138 × 188 cm for a Double.
Yes, but it can feel relatively snug for everyday use. A Queen generally provides more personal space for couples.
It depends on the sleeper's height and preferred sleeping position. Taller adults may find a 203 cm-long King Single or Queen more comfortable.
Not necessarily. Check the internal mattress dimensions of the frame and the manufacturer's specifications before purchasing.
Understanding double bed mattress dimensions cm is an important first step when planning a comfortable bedroom.
For Australian homes, the standard measurement to remember is approximately 138 × 188 cm. This gives a solo sleeper generous space while remaining more compact than a Queen.
Before purchasing, consider your height, sleeping habits, room dimensions, bed-frame footprint and bedding requirements. A Double can be an especially practical choice for teenagers, solo adults, guest bedrooms and smaller homes.
With the right proportions and thoughtful styling, a Double bedroom can feel comfortable, spacious and beautifully considered.
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.
My Cart
Your Cart Is Empty
Continue shopping
