If you’re choosing between a single bed and a double bed, the “best” option usually comes down to two things: (1) your room layout and (2) who will actually sleep in it. This guide is written for Australian homes (and real Queensland room sizes), with simple visuals and a measuring checklist you can follow on your phone.
Quick answer: which one should you choose?
Choose a Single if you want the most floor space
- Kids’ rooms, share rooms, bunks, student rooms, or tight layouts
- You need space for a desk, toy storage, or a wide walkway
- Guest room used occasionally (and you’d rather keep it flexible)
Best A2Z picks: Single bed frames or single bed packages.
Choose a Double if you want extra sleeping room
- Teenagers moving up from a single/king single
- Single adults who like to sprawl (or sleep with a pet)
- Guest room that often hosts couples (note: it’s “cosy”)
Best A2Z picks: Double bed frames or double bed packages.
Australian bed sizes: single vs double (standard dimensions)
In Australia, a standard single mattress is typically 92 cm × 188 cm, and a standard double mattress is typically 138 cm × 188 cm. (Always double-check your exact product—brands can vary slightly and bed frames are usually larger than the mattress.)
| Bed size (AU) | Mattress dimensions | Best for | Heads-up |
|---|---|---|---|
| Single | 92 × 188 cm | Kids, smaller bedrooms, desks + storage, flexible guest rooms | Most adults feel cramped long-term (especially if you move in your sleep) |
| Double | 138 × 188 cm | Teens upgrading, single adults, guest rooms (solo sleepers) | Two adults can fit, but many couples prefer a queen for everyday comfort |
Tip: don’t forget “frame size” (not just mattress size)
A bed frame can add extra centimetres in width/length, especially with a thick headboard or rounded corners. If your room is tight, measure the space you have and compare it to the full frame footprint in the product specs.
Pictorial: single vs double footprint (top-down)
Want help choosing quickly? Bring your room measurements in-store—our QLD team can help map a practical layout. Find your nearest A2Z store.Space planning: how to know if it will actually fit
A bed that “fits on paper” can still feel annoying if you can’t open a wardrobe, walk past the foot of the bed, or place a bedside table. Use this simple method:
Step 1: measure these 4 things
- Room width and room length (wall to wall)
- Door swing + wardrobe door swing
- Window/AC position (QLD rooms often have a wall unit that affects bed placement)
- Power points (lamp/phone charging spot)
Step 2: keep “walking space” realistic
As a practical guide, try to keep 75–90 cm of space where you need to walk (and more if it’s a high-traffic path). If your layout is tight, you may be able to reduce clearance on a “non-walking” side by placing the bed against the wall.
If you want a more open feel, many retailers recommend leaving even more movement space where possible.
Quick bedroom layout checklist (save this)
- Can you make the bed without bruising your shins?
- Can wardrobe drawers/doors open fully?
- Is there space for at least one bedside table?
- Can you walk around the foot of the bed?
- Will the headboard block a window or airflow?
Comfort, cost & who it suits (real-life scenarios)
Kids (and growing teens)
A single is usually perfect for kids, but teens often appreciate extra width as they grow. If your room is narrow, consider a “middle ground” like a king single (extra width + length without jumping to a double).
Browse: Single beds | King single beds
Guest rooms
If guests are mostly solo, a single keeps the room useful for storage or a home office setup. If couples stay often, a double is more versatile—just keep expectations realistic (it’s snug for two adults).
Browse: Double beds | Mattress in a box
Solo adults (and pet sleepers)
If you’re a sprawler, a double is often the “minimum comfortable upgrade” from a single. If you’re tall, check length (and consider long single/queen depending on layout).
Browse: Double mattresses
Budget & ongoing costs
Doubles usually cost more than singles—not only for the frame/mattress, but also for sheets, protectors, toppers, and delivery handling. If you’re furnishing multiple rooms, singles can be the most cost-efficient choice.
Want value fast? Check mattress deals.
QLD tips: keep bedrooms cooler + more functional
Queensland bedrooms often deal with warm nights—so airflow matters. A supportive base with good ventilation and breathable materials can make a noticeable difference in comfort.
1) Prioritise airflow
If your room runs warm, look for designs that promote ventilation (for example, slatted bases and breathable mattress materials).
Explore: Australian Made Mattresses
2) Use storage beds to “buy back” floor space
If you’re upgrading to a double in a smaller room, a storage bed can replace a chest of drawers—freeing up walking space.
Explore: Bed frames with storage
Shop related collections on The A2Z Furniture
Bed frames by size
Mattresses & value bundles
FAQs: single vs double beds (Australia)
What is the standard single bed size in Australia?
A standard Australian single mattress is typically 92 cm × 188 cm. Always confirm the exact product dimensions, as minor variations can occur and bed frames often add extra centimetres.
What is the standard double bed size in Australia?
A standard Australian double mattress is typically 138 cm × 188 cm. Check your frame footprint too, especially if the room is tight.
Can two adults sleep in a double bed?
Yes—two adults can fit in a double bed, but it’s generally a “cosy” option for everyday sharing. For frequent couple use, many people prefer a queen if the room allows.
What size room do I need for a double bed?
It depends on your layout (wardrobes/doors) and how much walking space you want. If you can, aim for comfortable clearance in your main walkways. If the room is tight, consider placing one side against the wall or choosing a slimmer base.
Is a king single better than a double?
A king single can be a great “upgrade” when your room is narrow—more width and length than a standard single, without the footprint of a double. If you want extra width (and you have enough room), a double gives a noticeably roomier sleep surface.
Should I choose a storage bed for a smaller room?
If you’re short on floor space, a storage bed can replace extra furniture like a dresser—often making the entire room feel easier to live in. Browse bed frames with storage.
Sources (for sizing + planning)
We referenced Australian bed size guides and space-planning guidance to keep measurements consistent. Always confirm your chosen product’s specifications before purchasing.
- Space-around-bed planning guidance (clearance concepts): houseplanshelper.com
Need help in person? We have 5 stores across QLD—see contact details and locations.
Disclosure: This article includes links to relevant A2Z Furniture collections. Measurements are provided as guidance and can vary by product/brand.