Australian Bed Sizes vs US vs UK: A Quick Guide & Practical Tips

Comparing bed sizes across countries can feel like matching puzzle pieces that never quite click.

Check a few charts and you’ll see there is a clear pattern, you just need the right guide.

In this article, we’ll break everything down into simple, clear sections.

Our goal is to give you a guide you can actually use, whether you are shopping online, moving house, or trying to figure out why your sheet keeps popping off in the night.

Bed Size Comparison Guide: Australia vs US vs UK

Single Bed

• Australia: 92 x 188 cm
• US (Twin): 99 x 191 cm
• UK (Single): 90 x 190 cm

A single bed frame is the smallest standard option in all three regions, but the sizes are not identical.

Australia sits in the middle, slightly longer than the UK single and a touch narrower than the US twin. So, bed frames are not always cross-compatible.

If you are mixing and matching across countries, it is worth checking width first. US twin sheets can feel loose on an Australian single, while UK single linen can be a snug fit on a US twin.

Best For:

• Kids moving on from a cot
• Teenagers in small bedrooms
• Guest rooms where floor space is tight
• Bunk beds and daybeds
• Single adults who do not mind a compact sleep space

Long Single Bed

• Australia: 92 x 203 cm
• US (Twin XL): 99 x 203 cm
• UK: No direct equivalent. Closest sizes are Small Single at 75 x 190 cm or Single at 90 x 190 cm.

A long single bed gives you the same width as the Australian single, just with extra leg room. It is a popular size in split king setups because it keeps things compact while still feeling much more comfortable for taller sleepers.

In the US, the Twin XL is the closest match. It shares the same length but is noticeably wider.

The UK does not have a true long single, so linen and frames rarely line up unless you size up to a UK single, which is still a little shorter.

Best For:

• Tall teenagers
• Adults who want more length without taking up too much space
• Adjustable bed bases
• Split king setups (two long singles)

King Single Bed

• Australia: 107 x 203 cm
• US: No direct equivalent. Closest is Twin XL at 99 x 203 cm.
• UK: No direct equivalent. Closest is Large Single at 107 x 190 cm.

A king single sits in a sweet spot. Many people see it as the first size that feels properly roomy for one person, especially if you toss and turn or prefer a little space to stretch.

In the US, the Twin XL is the nearest match in length, though it is narrower.

In the UK, the Large Single is close in width but shorter, which can be tricky for taller sleepers.

Best For:

• Teenagers transitioning out of smaller beds
• Solo adults who want more breathing room
• Growing kids who need a bed that lasts
• Narrow guest rooms where a double feels too wide

Double Bed

• Australia: 138 x 188 cm
• US (Full / Double): 137 x 191 cm
• UK (Double): 135 x 190 cm

A double bed is the first size many people think of as “a proper bed” for one person, and a cosy option for two.

Australia has the widest version, the US sits just under that in width but adds a little length, and the UK double is slightly narrower and shorter again.

If you are switching countries or buying from an overseas brand, it is worth checking both width and length before you order.

Best For:

• Solo sleepers who like extra room to move
• Couples who do not mind a close fit
• Teenagers upgrading from a single or king single
• Guest rooms that need to sleep two without taking over the whole space

Queen Bed

• Australia: 153 x 203 cm
• US (Queen): 152 x 203 cm
• UK (King): 150 x 200 cm

A queen bed is the go to size for many couples. It feels generous without taking over the whole bedroom, and it usually fits standard rooms without a furniture reshuffle.

Across countries, queens are surprisingly close.

Australian and US queens are almost identical, with only a centimetre difference in width that most people never notice. The UK king is the nearest match, slightly shorter and a little narrower, but still similar in feel.

The main difference shows up when you are pairing a mattress with a bed frame from another region. Frames built for a UK king tend to be a tighter fit, while US queen frames can leave a small amount of extra space around an Australian queen.

Best For:

• Couples who like a comfortable amount of space
• Solo sleepers who want lots of room to stretch
• Main bedrooms in most homes and apartments
• Guest rooms that double as work or hobby spaces

King Bed

• Australia: 183 x 203 cm
• US (King / Eastern King): 193 x 203 cm
• UK (Super King): 180 x 200 cm

A king bed is all about space. It gives couples room to stretch, spread out, or sleep without bumping into each other every time someone rolls over.

Although the names differ across countries, the measurements are fairly close. The Australian king is wider than the UK super king but narrower than the US king.

The biggest difference often shows up in bed frame sizing. A US king frame is built for a wider mattress, so you may notice small gaps if you use it with an Australian king. UK frames sit closer in width but can feel a little short if you prefer a snug end to end fit.

Best For:

• Couples who value plenty of space
• Families who co sleep or share the bed with pets
• Larger bedrooms with room to move
• Anyone who prefers a roomy, relaxing sleep surface

Super King Bed

• Australia: 203 x 203 cm
• US: No direct equivalent. Closest is the California King at 183 x 213 cm.
• UK (Super King): N/A

A super king is the widest standard bed size in Australia. It gives you a true stretch out experience, with enough space for couples, kids, and even a pet or two.

There is no direct equivalent in either the US or the UK. The closest option people often mention is the US California King, which adds length but loses a fair bit of width. That difference changes how the bed feels, especially if you value side to side space more than leg room.

Because super king is uniquely Australian, bed frames and bases need to be made specifically for it. UK and US frames are usually too narrow or too short, even when the name sounds similar.

Best For:

• Couples who like maximum room
• Families who often share the bed
• Large master bedrooms
• Anyone who wants a roomy, hotel style sleep setup

Practical Tips to Get the Perfect Bed Size

Choosing a bed size is a lot easier once you look at your real life, not just the size chart.

Here are a few simple checks that help you land on a bed that actually fits you, your room, and your routine.

• Measure your room first
  Map out where the bed will sit and leave space to walk around, open wardrobe doors, and pull drawers out without bumping into corners.
• Think about who is sleeping on it now and later
  Is it just you, you and a partner, or you plus kids or pets in the morning? Pick a size that matches how your bed is really used.
• Check the mattress size in centimetres, not just the name
  A “queen” or “king” label can mean different things in different countries, so always compare the actual width and length.
• Match your bed frame to the mattress size, not the country label
  If you mix Australian, US, and UK brands, check the measurements so you do not end up with gaps or an overhang.
• Factor in height and sleep style
  Taller sleepers and people who starfish or toss and turn usually feel better in longer or wider sizes.
• Plan for bedding and accessories
  Look at what linen, mattress toppers, and protectors are easy to buy locally for the size you are choosing.

Ecosa Beds for All Sizes

We build our bed frames and bed bases to suit every standard size, from single and king single right through to super king. With a 5 year warranty, you get long lasting support and a setup you can rely on night after night.

You can choose from warm timber finishes, soft upholstered designs, clever built in storage, or an adjustable setup that lets you customise your sleep position at the touch of a button.

Order online in Australia and New Zealand, with next day delivery services available, so your new setup arrives quickly. In Australia, you can also visit our stores across the country to try our products in person, then use click & collect to bring your chosen bed home sooner.

FAQs

Are UK and Australian bed sizes the same?

No, they differ in both width and length. Some sizes come close, like the Australian queen and the UK king, but most are not interchangeable. This affects how well mattresses, frames, and linen match across brands.

Is a UK king size the same as Australia?

Not quite. An Australian queen is close to a UK king, but an Australian king is wider and longer than anything labelled king in the UK. If you mix products across regions, always check the measurements in centimetres.

Do two king singles make a king in Australia?

Yes. Two Australian long singles placed side by side match the size of an Australian king. This setup is common for adjustable beds because each side can move independently while still giving you the full width of a king.