Designer Bed Size Guide Australia: Queen, King & Double Dimensions

A bed is the anchor of any bedroom, so getting the size right matters more than almost any other furniture decision in the home. Too small, and a couple feels cramped every night. Too large, and the room loses its sense of space and flow. This bed size guide covers every standard Australian bed size, how they compare to overseas sizing, how much clearance to leave, and how to match a bed size to your room before you buy.

Australian Bed Sizes At A Glance

Australian mattress and bed sizes follow a standard set of measurements, though it's always worth confirming exact dimensions with the specific bed frame or mattress you're considering.

Size	Dimensions (cm)	Best suited for
Single	92 x 188	Children, single sleepers, compact guest rooms
King Single	107 x 203	Teenagers and adults who want more length, small bedrooms
Double	138 x 188	Couples in smaller rooms, guest rooms
Queen	153 x 203	Couples, Australia's most common size
King	183 x 203	Couples wanting extra width, larger main bedrooms
Super King	203 x 203	Maximum space, primary bedrooms with room to spare

Bed Size Guide: How To Choose The Right Bed For Your Bedroom

Double Bed Size

A Double bed measures 138 cm wide by 188 cm long. It's a comfortable size for a single sleeper who wants more room to move than a Single provides, and it can work for couples in a smaller bedroom, though it's tighter for two adults long term than a Queen. Double beds are common in guest rooms and secondary bedrooms, where floor space is limited but a Single feels too narrow for occasional double occupancy.

A Double suits a bedroom from around 3m x 3m, allowing clearance on both sides and space for a wardrobe. The most common mistake with a Double is choosing it as a primary bed for a couple sharing it nightly. It works for a guest room or a compact main bedroom, but two adults sleeping in it regularly will usually find a Queen a more comfortable long-term choice.

King Size Bed Dimensions

A King bed measures 183 cm wide by 203 cm long in Australia, making it 30 cm wider than a Queen while sharing the same length. That extra width gives each partner significantly more personal space, which is why a King is the natural upgrade for couples who move around during the night, share the bed with a pet, or simply prefer more room.

A King needs a bedroom of roughly 3.8m x 3.6m or larger to sit comfortably with proper clearance on all sides. Below that, a King will crowd the room and leave little space for a wardrobe, bench or bedside tables.

King bed frame vs mattress. A King mattress measurement refers to the sleeping surface itself, but the bed frame's footprint is usually somewhat larger once you account for the surrounding structure and headboard depth. This matters most with a King, since the size difference between frame and mattress becomes more noticeable at scale. When measuring your room for a new King bed, measure the full frame footprint rather than the mattress dimensions, and check the manufacturer's specifications for the exact outer size, particularly with an upholstered or wide-headboard frame.

Queen Bed Size

A Queen bed measures 153 cm wide by 203 cm long, and it's the most widely chosen size in Australian homes. Queen bed dimensions offer a comfortable balance between sleeping space for two adults and a footprint that fits most standard bedrooms without overwhelming the room.

A Queen suits a bedroom of around 3.6m x 3.6m, giving clearance on both sides and enough room for bedside tables. For couples who sleep close together or are furnishing a room with a modest footprint, a Queen is usually the right fit before considering anything larger.

Queen vs King: Which Should You Choose?

This is the most common decision couples face, and there's no universally right answer. A Queen and a King share the same length in Australia (203 cm) — the difference is entirely in width, with a King offering 30 cm more. For couples who sleep close together or have a smaller room, a Queen is usually the better fit. For couples who move around during the night, share the bed with a pet, or simply prefer more personal space, a King is worth the extra floor area if the room can take it. Measure the room first. A King needs roughly 3.8m x 3.6m or more to sit comfortably with proper clearance on all sides.

Single Bed Size

A Single bed measures 92 cm wide by 188 cm long. It's the standard choice for a child's room, a compact guest room, or a solo sleeper prioritising floor space above all else. A Single suits almost any bedroom size, since its footprint is the smallest of the standard Australian sizes, though most adults will find it restrictive for regular long-term use.

King Single Bed Size

A King Single measures 107 cm wide by 203 cm long — the same length as a Queen and King, but considerably narrower. It's a popular choice for teenagers and adults who want more legroom than a Single offers without the width of a Double, and it fits well in a smaller bedroom where floor space is at a premium.

A King Single suits a bedroom from around 2.8m x 3.2m, leaving room for a desk, wardrobe or reading chair alongside the bed. It's also a practical option for a compact main bedroom used by a solo sleeper who values length over width.

What About A Super King?

A Super King is the largest standard Australian size, matching a King in width while extending further in length on some frames, and is best suited to a primary bedroom with genuine room to spare. It suits households wanting maximum sleeping space, whether for two adults, a family bed arrangement, or simply the comfort of a larger surface. A Super King demands a proportionally larger room; forcing one into a modest bedroom will crowd every other piece of furniture around it.

Australian Sizes Aren't The Same As US Or UK Sizes

If you've lived overseas or you're buying bedding internationally, don't assume the size names match. An Australian King (183 cm wide) is around 10 cm narrower than a US King (193 cm wide), while a UK King is narrower again. The length also varies between countries. Always check the centimetre dimensions rather than relying on the size name alone, particularly if you're sourcing sheets, quilts or a mattress protector from an international retailer.

How Much Clearance Should You Leave Around A Bed?

Comfortable movement around the bed matters as much as the bed itself. As a working guide, leave 60 to 75 cm on each side of the bed, and at least 90 cm for the main walkway to the door. For a primary bedroom that also needs to feel generous rather than merely functional, aim for closer to 90 cm on all sides where the room allows it. These clearances also govern which wardrobes, benches or bedside tables can comfortably sit alongside the bed without crowding the room.

Matching Bed Size To Room Size

A bed should be chosen for the room it will sit in, not the largest size available.

Small bedroom (under 3m x 3m): a King Single or Double keeps the room feeling open and leaves space for a wardrobe and clear walkway.
Standard bedroom (around 3.6m x 3.6m): a Queen is the natural fit, allowing clearance on both sides and room for bedside tables.
Larger bedroom (4m x 4m or more): a King suits the extra floor space, particularly where the room also needs to accommodate a bench, reading chair or dressing area.
Primary suite (4.5m x 4.5m or more): a Super King makes full use of a generous room without crowding the clearances around it.

For guidance specific to laying out the rest of the room around your bed, see our bedroom layout ideas.

Choosing A Bed As The Anchor Of Your Room

With handcrafted, made-to-order furniture, the bed is chosen first as the room's scale reference, and the rest of the layout follows from there. Sovereign's exclusive Italian bed and headboard collections, including Giorgio and Turri, are built as considered starting points rather than an afterthought fitted around existing furniture. A generously proportioned headboard can also anchor an off-centre wall, so the room still reads as balanced even where the architecture isn't perfectly symmetrical.

What Changes When You're Furnishing With A Made-To-Order Or Imported Bed

Custom and imported beds require the size decision to be made early. Unlike an off-the-shelf frame, a made-to-order bed can't be swapped last-minute once production begins, so confirming the exact dimensions and finalising the room layout ahead of ordering is essential. Imported pieces carry several weeks of lead time, meaning the sizing decision needs to happen well before delivery, not once the piece has arrived. Sovereign offers in-showroom measurement, and you can book a consultation to confirm dimensions and lock in your layout in advance.

Common Bed Sizing Mistakes To Avoid

A few mistakes come up often enough to flag:

Choosing a bed size based on the room's overall floor area rather than the clearance needed around the bed itself.
Assuming an international size name (Queen, King) matches Australian dimensions when buying bedding or a mattress overseas.
Measuring the mattress size rather than the full frame footprint, then finding the frame doesn't fit as expected.
Sizing up to a King or Super King without checking there's still enough clearance left for a wardrobe, bench or bedside tables.

Explore Designer Beds At Sovereign Interiors

Choosing the right bed size is the first real decision in furnishing a bedroom that feels considered rather than crowded. Once you know your dimensions, explore our bedroom collection or book a consultation, and we'll help you confirm the right size and layout for your space.

Browse Designer Beds Visit a Showroom

What size is a double bed? +

What size is a king bed? +

What are king single bed dimensions? +

What size is a queen bed? +

Should I choose my bed size before or after planning the rest of the room? +

Can a Super King fit in a standard Australian bedroom? +

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Bed Size Guide: How To Choose The Right Bed For Your Bedroom