Long Single Mattress Size Guide Australia
If a standard single bed feels too short but a king single takes up too much space, a long single mattress can be the perfect middle ground.
A long single mattress gives you the same compact width as a standard single, but with an extra 15cm in length. In Australia, long single mattresses measure:
| Mattress Size | Dimensions |
|---|---|
| Long Single Mattress | 92cm × 203cm |
That extra length makes a noticeable difference for taller sleepers, teenagers, guest rooms, and adjustable bed setups.
For many Australian households, long single mattresses are becoming increasingly popular because they offer better legroom without requiring a wider bedroom layout. They’re also commonly used in split king adjustable beds, where two long single mattresses are placed side by side.
Related guide: Bed Mattress Size Guide Australia
What Is a Long Single Mattress?
A long single size mattress is essentially an extended version of a standard single mattress.
Both sizes share the same width:
- Single mattress: 92cm × 188cm
- Long single mattress: 92cm × 203cm
The key difference is the added length.
This extra space is especially useful for:
- taller teenagers
- adults in compact bedrooms
- guest rooms
- adjustable bed bases
- growing children who need a future-proof bed size
Compared to a king single, a long single size keeps a narrower profile while still offering more legroom.
Long Single Mattress Dimensions in Australia
Here’s how a long single size compares to other common Australian mattress sizes:
| Mattress Size | Dimensions | Best For |
|---|---|---|
| Single | 92 × 188 cm | Kids, compact rooms |
| Long Single | 92 × 203 cm | Tall solo sleepers, adjustable beds |
| King Single | 107 × 203 cm | Teenagers, single adults |
| Double | 138 × 188 cm | Solo adults, guest rooms |
A long single mattress size has the same length as:
- queen mattresses
- king mattresses
- king single mattresses
but keeps the slim width of a single bed.
That’s why it’s often considered one of the best space-saving mattress sizes in Australia.
Who Should Buy a Long Single Mattress?
Taller Teenagers
Teenagers often outgrow a standard single mattress quickly. A long single provides additional legroom without taking up significantly more floor space.
It’s a practical upgrade for growing sleepers who don’t yet need a king single bed.
Adults in Small Bedrooms
For studio apartments, guest bedrooms, and compact homes, long single mattresses work well because they maximise sleeping length while minimising width.
This is especially helpful in narrow Australian bedrooms where every centimetre matters.
Adjustable Bed Users
Long single mattresses are one of the most common sizes used for adjustable bed bases in Australia.
Two long singles placed together create a split king setup, allowing couples to:
- adjust each side independently
- choose different firmness preferences
- reduce partner disturbance
This is one of the biggest reasons long single mattresses have become more popular in recent years.
Long Single vs Single Mattress
| Feature | Long Single | Standard Single |
|---|---|---|
| Width | 92cm | 92cm |
| Length | 203cm | 188cm |
| Best For | Taller sleepers | Children |
| Adjustable Beds | Commonly used | Less common |
| Space Saving | Excellent | Excellent |
If you’re under average height or buying for younger children, a standard single may still be enough.
But for taller sleepers or long-term use, many Australians prefer the added flexibility of a long single mattress.
Long Single vs King Single
This is one of the most searched mattress size comparisons in Australia.
| Feature | Long Single | King Single |
|---|---|---|
| Width | 92cm | 107cm |
| Length | 203cm | 203cm |
| Best For | Compact rooms | Extra sleeping space |
| Floor Space | Smaller footprint | Larger footprint |
A king single offers more width, but it also takes up noticeably more room.
If bedroom space is limited, a long single can often be the more practical choice.
Is a Long Single Mattress Good for Adults?
Yes — especially for solo adults who want:
- extra legroom
- a smaller bedroom footprint
- adjustable bed compatibility
Many adults assume a single mattress will feel too short, but a long single solves that problem without needing to move up to a larger bed size.
For compact apartments or guest rooms, it can be one of the smartest mattress sizes available.
Best Mattress Type for a Long Single Bed
The best mattress type depends on your sleep preference, but hybrid mattresses are becoming increasingly popular in long single sizes because they combine:
- pressure relief
- airflow
- responsive support
The Onebed Essential Long Single Mattress is a practical option for teenagers, guest rooms, and solo sleepers wanting extra legroom without taking up too much space. It offers balanced medium support and everyday comfort in a space-efficient long single size.
For sleepers wanting more advanced support, the Onebed Original Long Single Hybrid Mattress combines supportive pocket springs with adaptive foam layers for improved spinal alignment, pressure relief, and responsive comfort. Its long single size also works especially well with adjustable bed bases and split king setups.
As more Australians choose long single mattresses for adjustable beds and compact bedrooms, hybrid long single designs continue to become one of the most versatile long-term sleep solutions.
Can Two Long Single Mattresses Make a King Bed?
Yes.
Two long single mattresses placed side by side create a split king configuration.
This setup is popular for:
- adjustable bed bases
- couples with different comfort preferences
- reduced motion transfer
- independent sleep positioning
It’s commonly used in premium adjustable bed systems throughout Australia.
Things to Consider Before Buying a Long Single Mattress
Before buying, consider:
Bedroom Space
Although narrow, a long single is still 203cm long, so make sure your room has enough clearance.
Bedding Compatibility
Long single fitted sheets and mattress protectors are available, but not as widely stocked as standard single bedding.
Future Use
A long single can often last much longer than a standard single because teenagers and adults won’t outgrow the mattress length as quickly.
Final Thoughts
A long single mattress is one of the most practical mattress sizes for Australians who want extra sleeping length without sacrificing too much floor space.
It’s especially well suited for:
- taller sleepers
- teenagers
- guest rooms
- adjustable bed bases
- compact bedrooms
For many households, it offers the ideal balance between comfort, flexibility, and space efficiency.
