King Single Mattre Size: Dimen ion , Pro , and Compari on
If you’ve ever measured a standard single bed and felt it just doesn’t quite give you enough legroom, you already know why the king single exists. This Australian size is built for taller sleepers who want extra length without sacrificing too much room width — but exact dimensions vary between retailers.
Australian king single length: 203 cm (80 in) · Australian king single width: 105.5 cm (42 in) · Standard single mattress (Ireland/UK): 90 × 190 cm · King single longer than single by: 13 cm
Retailer measurements show a small variation in width, as seen below.
| Source | Width | Length | Notes |
|---|---|---|---|
| Sealy Australia | 105.5 cm | 203 cm | Official manufacturer spec |
| Bedbuyer | 107 cm | 203 cm | Retail listing |
| Beds Australia | 107 cm | 203 cm | Also lists 42 × 80 in |
| Ecosa | 107 cm | 203 cm | Also 42.13 × 79.92 in |
| Forty Winks | 107 cm | 203 cm | FAQs page |
| Snooze | 105.5–106 cm | 203 cm | Lists both 105.5 and 106 |
Quick snapshot
- Australian king single: 105.5 cm × 203 cm (Sealy Australia)
- Standard single (UK/Ireland): 90 cm × 190 cm (Forty Winks, IKEA Ireland – but note Beds Australia and Bedbuyer list 92×188–190, showing variation)
- Long single: 92 cm × 203 cm (Bedbuyer)
- Exact weight capacity – no manufacturer data available
- Whether 180 × 200 cm is called king or queen in specific countries (varies by retailer)
- Standard single dimensions are not consistent across Australian sources – some list 92×188, others 92×190, others 90×190
- Not applicable – no evolving timeline; dimensions are static
- Check your bed frame compatibility before buying a king single
What size is a king single mattress?
King single mattress dimensions in centimetres
The standard Australian king single measures 203 cm long and 105.5 cm wide according to Sealy Australia. However, several retailers including Beds Australia and Ecosa list 107 cm width. Snooze shows 105.5 cm and also 106 cm, so the actual width sits between 105.5 and 107 cm depending on the manufacturer. The length is consistent at 203 cm across all major sources.
- Width: 105.5–107 cm (42–42.13 in)
- Length: 203 cm (80 in)
The pattern: king single prioritizes length over width.
King single mattress dimensions in inches
Beds Australia converts the king single to 42 × 80 in. Ecosa gives a slightly more precise 42.13 × 79.92 in. The small difference (about 0.08 in) comes from rounding – either figure works for sheet fittings.
King single mattress dimensions in feet
In feet, the king single measures about 3 ft 6 in wide and 6 ft 8 in long. That’s 13 cm longer than a standard single (which is 6 ft 3 in), giving taller sleepers that extra stretch room. Bedbuyer notes the single is 92 × 188 cm (3 ft × 6 ft 2 in), so the king single adds 15 cm in both directions.
The implication: if you’re used to a single and always feel your feet touch the end, a king single gives you more than half a foot of extra length without the width of a double.
Can an adult sleep on a king single?
Length and width for adult comfort
At 203 cm long, a king single comfortably fits adults up to about 190 cm tall. Bedbuyer confirms the king single is 15 cm longer than the standard single, which is why Forty Winks and Beds Australia both call it the largest single-size option. The 105.5–107 cm width is narrower than a double (135 cm in the UK/Ireland), so it works for a single adult who doesn’t spread out much.
The 203 cm length is 13 cm longer than a standard single, making it suitable for most adults up to 190 cm.
Weight capacity and sleeping positions
No official weight limit is published by major manufacturers. Standard mattress cores (pocket spring, foam) for this size typically support average adult build without sagging if the base is solid. Back and stomach sleepers benefit from the even surface; side sleepers may want a topper for shoulder relief.
Comparison with twin XL and double
The king single is the same length as the US twin XL (203 cm) but wider (105.5 vs 99 cm). Compared to a UK/Ireland double (135 × 190 cm), the king single is 13 cm longer but 29.5 cm narrower. Forty Winks also notes that a long single (92 × 203 cm) is a cheaper alternative for tall sleepers who don’t need extra width.
Adults who only sleep alone and are under 190 cm tall get the best value from a king single. Couples, restless sleepers, or anyone over 190 cm should size up to a double or king.
The catch: taller or restless sleepers need a larger size.
What size mattress is 180×200 cm?
Is 180×200 a king size?
In Australia and the UK, 180 × 200 cm is not a standard bed size. Standard king in the UK/Ireland is 150 × 200 cm according to Bargaintown Ireland. The 180 cm width is 30 cm wider than that, placing it closer to a European “queen” or “king” but not labelled uniformly.
What does 180×200 cm correspond to?
In some European countries, 180 × 200 cm is a common double/queen size for couples who want extra width. IKEA Ireland’s range tops out at 150 × 200 cm for king; they don’t list a 180 × 200 cm product. So if you see a 180 × 200 cm mattress in Ireland or Australia, it’s likely an import or a specialty size.
Common mattress sizes near 180×200
- Australian king: 183 × 203 cm (Super King is 203 × 203 cm)
- UK/Ireland king: 150 × 200 cm
- European queen (common): 160 × 200 cm
Why this matters: a 180 × 200 cm mattress won’t fit standard Australian or Irish bed frames without custom order. Always measure your bed base before buying.
A bed frame built for a standard UK king (150 × 200) will not accept an 180 × 200 mattress. Australian buyers face the same issue. Always measure your bed base and compare with the seller’s stated dimensions – even a few centimetres can cause fitting problems.
The implication: always measure before buying.
Is 160×200 a king size?
Comparison to king size
160 × 200 cm is sometimes marketed as a “king” in continental Europe, but in the UK and Ireland the standard king is 150 × 200 cm. IKEA Ireland’s size guide confirms king beds are 150 × 200 cm, not 160 × 200 cm. That extra 10 cm width pushes 160 × 200 cm into the “queen” or “small king” territory depending on the retailer.
Common sizes that are 160×200
In Australia, a standard double is 137 × 188 cm, so 160 × 200 cm is larger than a double but narrower than a queen (153 × 203 cm in Australia). In the UK, a queen size is 120 × 190 cm (often called a small double), so 160 × 200 cm is much larger – effectively a “European king.”
How 160×200 relates to king single
The king single (105.5–107 × 203 cm) is 53–55 cm narrower than 160×200. So while they share a similar length (203 vs 200 cm), the king single is a strict single-person bed, while 160×200 can accommodate two slim adults.
Is 180×200 king or queen size?
Queen size dimensions
Standard queen size in Australia is 153 × 203 cm. In the UK/Ireland, “queen” is often used for 120 × 190 cm (a small double). 180 × 200 cm exceeds both, sitting between queen and king in most regions.
King size dimensions
Australian king is 183 × 203 cm; UK/Ireland king is 150 × 200 cm. 180 × 200 cm is closer to Australian king on width but 3 cm shorter. In Ireland, it’s wider than a king but not long enough to be called a king – many retailers would label it a “wide queen.”
Regional differences in labeling
The same 180 × 200 cm mattress might be called “queen” in Germany, “king” in the Netherlands, and “wide double” in the UK. Bargaintown Ireland clearly defines king as 152 × 198 cm (6 ft 6 in × 5 ft), so 180 × 200 cm doesn’t match any standard Irish size. The catch: if you’re importing a mattress, always check the label’s region to avoid a frame mismatch.
A bed frame built for a standard UK king (150 × 200) will not accept an 180 × 200 mattress. Australian buyers face the same issue. Always measure your bed base and compare with the seller’s stated dimensions – even a few centimetres can cause fitting problems.
The takeaway: labeling varies by region.
Size comparison table
Four common sizes, one clear pattern: the king single is the specialist for tall single sleepers, while doubles and kings cover couples.
| Size | Width | Length | Region |
|---|---|---|---|
| King single | 105.5 cm (42 in) | 203 cm (80 in) | Australia |
| Single | 90 cm (35 in) | 190 cm (75 in) | UK/Ireland |
| Double | 135 cm (53 in) | 190 cm (75 in) | UK/Ireland |
| King | 150 cm (59 in) | 200 cm (79 in) | UK/Ireland |
Regional naming conventions can be confusing, as shown below.
| Metric size | Label in Australia | Label in UK/Ireland | Label in Europe |
|---|---|---|---|
| 90 × 190 cm | Single | Single | Single |
| 105.5 × 203 cm | King single | Not standard | Not standard |
| 150 × 200 cm | Not standard | King | King (some countries) |
| 160 × 200 cm | Not standard | Not standard | Queen / small king |
| 180 × 200 cm | Not standard | Not standard | Queen / king |
| 183 × 203 cm | King | Not standard | Not standard |
The pattern: regional naming conventions can be confusing.
Pros and cons of a king single mattress
Upsides
- Longest standard single size (203 cm) – ideal for adults up to 190 cm
- Narrow width (105.5 cm) fits smaller rooms and single bed frames
- Wider than a standard single and long single – more shoulder room
- Same length as US twin XL – compatible with twin XL sheets
- Available from major Australian retailers (Sealy, Ecosa, Bedbuyer)
Downsides
- Not wide enough for couples or restless sleepers
- Not a standard size in UK/Ireland – limited local availability
- Sheets and frames may require king single specific purchase
- Width variation (105.5–107 cm) can complicate sheet fitting
- Weight capacity not disclosed; extra caution for heavier adults
The balance: king single works for single tall sleepers but not couples.
Clarity: confirmed and unclear
Confirmed facts
- Australian king single: 203 cm long × 105.5 cm wide (Sealy Australia)
- Standard single (Ireland/UK): 90 cm × 190 cm (Forty Winks, IKEA Ireland – note variation across Australian sources)
- King (Ireland/UK): 150 cm × 200 cm (Bargaintown Ireland)
- Long single: 92 cm × 203 cm (Bedbuyer)
What’s unclear
- Exact weight capacity of a king single mattress – no manufacturer data
- Whether 180 × 200 cm is called king or queen in specific countries – varies by retailer
- Consistency across Australian retailers (width varies 1.5 cm)
The remaining uncertainty centers on weight capacity and regional label consistency.
Expert perspectives
In Australia, a King Single size mattress is 203cm long and 105.5cm wide. We recommend it for taller sleepers who need the extra length but prefer the narrower profile of a single bed.
Sealy Australia
A standard single mattress … typically measures 90 cm x 190 cm (3 ft x 6 ft 3 in). For taller adults, a long single (92 cm x 200 cm) or a king single may be necessary.
Michael Murphy Ireland
The consensus: king single is an Australian-specific size for tall individuals.
The king single is Australia’s answer to the tall single sleeper – a specialised size that prioritises length over width. For Australian adults under 190 cm who sleep alone, the choice is clear: a king single gives you the extra legroom you need without taking up the floor space of a double. For UK/Ireland buyers, the same size requires import or special order, making a standard single or a UK king more practical.
bedsaustralia.com.au, ecosa.com.au, bedshed.com.au, snooze.com.au, ikea.com, fortywinks.com.au, youtube.com
För en djupgående jämförelse mellan olika sängdimensioner, se vår fullständiga guide om king single-sängstorlekar som även täcker mått för vuxna.
Frequently asked questions
Can two people sleep on a king single mattress?
No. At 105.5–107 cm wide, a king single is only 42 inches across – too narrow for two adults to sleep comfortably. It’s designed for single occupancy.
What is the difference between a king single and a twin XL?
A king single (105.5×203 cm) is 6.5 cm wider than a US twin XL (99×203 cm). Both are the same length. The king single is the Australian equivalent of a wider twin XL.
How much does a king single mattress weigh?
Mattress weight depends on materials. A typical king single pocket-spring mattress weighs 20–30 kg; a foam version may be lighter. Always check the product listing for exact weight.
Do king single sheets fit a standard single bed?
No. King single sheets require a king single mattress – the extra 13–15 cm in both directions means standard single sheets will be too short.
Is a king single bed the same as a long single?
No. A long single is 92×203 cm (same length, narrower width). A king single is both wider (105.5–107 cm) and longer than a standard single. They are two different sizes.
What size bed frame do I need for a king single mattress?
You need a bed frame designed for a king single mattress. The internal frame dimensions should be at least 105.5×203 cm to support the mattress. Many Australian retailers sell dedicated king single frames.
Are king single mattresses available in Ireland?
King single is not a standard size in Ireland. Most Irish retailers (IKEA, Michael Murphy, Bargaintown) don’t stock it. You may find it through specialty online stores or Australian/Asian importers.
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