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 bed dimensions 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 bed 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 bed dimensions: 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 bed 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.
What Room Size Is Best for a Long Single Bed?
A long single bed is compact in width, but because it is 203cm long, room layout still matters when planning placement.
Minimum room size:
2.4m × 3m
This is the smallest practical room size for a long single bed. It allows the bed to fit, but space for walking around or adding furniture (like a desk or wardrobe) will be limited. This setup works best for guest rooms or very compact bedrooms where the bed is the main furniture piece.
Recommended room size:
2.7m × 3m
This is the ideal room size for a long single bed. It provides enough clearance around the bed for comfortable movement, better airflow, and space for additional furniture. It also makes the room feel less cramped, especially for teenagers or adults using the bed daily.
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 bed dimensions 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
Long single bed dimensions are commonly used with adjustable bed frames because the extra length provides additional comfort for taller sleepers.
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.
FAQ
Is a long single mattress the same as a king single in Australia?
No. Both mattresses are the same length (203cm), but a long single is narrower at 92cm compared to a king single at 107cm. A long single saves space, while a king single offers more sleeping width.
What size is a long single bed in Australia?
A long single mattress measures 92cm × 203cm, making it 15cm longer than a standard single mattress.
Can adults sleep on a long single bed comfortably?
Yes. A long single bed is suitable for adults, especially in smaller bedrooms, studio apartments, or guest rooms where space is limited but extra legroom is needed.
Do long single mattresses fit standard bed frames?
Not always. Long single mattresses require a matching long single bed frame (203cm length). A standard single frame (188cm length) will be too short.
Can I use standard single sheets on a long single mattress?
No. Standard single sheets will be too short in length. You’ll need long single fitted sheets and mattress protectors designed for 203cm length.
Is a long single bed good for teenagers?
Yes. Long single beds are very popular for teenagers in Australia because they prevent them from outgrowing a standard single mattress too quickly.
What is better: long single or king single for small bedrooms?
A long single is usually better for very narrow rooms because it has a smaller width. A king single is better if you have enough space and want extra sleeping width.
Can two long single mattresses make a king bed?
Yes. Two long single mattresses placed together create a split king bed, which is commonly used for adjustable bed bases in Australia.
