Shorty and Small-Space Mattresses: Fitting a Bed Into a Box Room
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Small bedrooms are the norm in a lot of British housing. Box rooms in new builds, loft conversions with sloping ceilings, narrow Victorian third bedrooms and cabin beds in flats all present the same problem: a standard single mattress is 190cm long and 90cm wide, and sometimes that simply does not go in.
The good news is that the UK has more small mattress sizes than most countries, and they are widely manufactured. This guide covers what each size is, where it fits, and how to decide between squeezing in something bigger and choosing something that actually suits the room.
The small UK sizes explained
Shorty — 75cm x 175cm
Also written 2ft6 x 5ft9. A shorty is both narrower and 15cm shorter than a standard single. It is the size most often used in cabin beds, mid-sleepers and children’s rooms, and it is the one that rescues genuinely tight spaces. The trade-off is that most people outgrow the length by their early teens.
Small single — 75cm x 190cm
2ft6 x 6ft3. Full single length but 15cm narrower. This is often the better compromise, because length is what people outgrow first. If your constraint is width rather than depth of the room, this is usually the size to choose.
Single — 90cm x 190cm
3ft x 6ft3, the UK standard. Worth measuring for before assuming it will not fit, because 15cm is less than people picture.
Small double — 120cm x 190cm
4ft x 6ft3, sometimes called a three-quarter bed. Genuinely useful in a room that cannot take a 135cm double but where one adult wants more than a single. It is also a common choice for guest rooms that double as an office.
Measuring properly
Measure the floor space, then measure the route. A mattress has to get up the stairs, round the landing and through the door. Rolled and boxed mattresses solve most of this because they arrive compressed, but a traditional sprung mattress in a super king will not go round a tight Victorian staircase.
In loft rooms, measure the height at the point where the bed will sit, not at the highest point of the room. A bed under a slope needs enough headroom to sit up in, which usually means at least 90cm above the mattress surface on the side you get in.
Leave circulation space. As a rough guide, allow about 60cm along at least one side of the bed to make it and get in comfortably, and more if a door or wardrobe opens into that space.
Which size for which room
| Size | Dimensions | Works well in | Watch for |
|---|---|---|---|
| Shorty | 75 x 175cm | Cabin beds, mid-sleepers, box rooms | Outgrown by early teens |
| Small single | 75 x 190cm | Narrow rooms, bunk beds | Bedding is less widely stocked |
| Single | 90 x 190cm | Most third bedrooms | Check door swing and circulation |
| Small double | 120 x 190cm | Guest rooms, single adults, box rooms in flats | Tight for two adults nightly |
When a standard size will not do
Some spaces are not served by any standard size — boat berths, attic alcoves, bespoke joinery, cabin beds built to fit a chimney breast. In those cases a custom-cut foam mattress is usually cheaper than people expect, and considerably better than wedging in something that does not fit.
The Foam People cut mattresses and toppers to size, including shapes with tapered or radiused corners. Sketch the outline with a measurement on every edge rather than supplying just a length and width.
Bedding is the hidden cost
Standard single and double bedding is everywhere. Shorty and small single bedding is not. Before committing to a less common size, check that you can readily buy fitted sheets for it, or accept that a standard single fitted sheet will be loose on a shorty.
Small double bedding is more widely available than it used to be but still narrower in choice than double. Factor a slightly higher ongoing cost into the decision.
Practical checklist
- Measure floor space, doorways, stair turns and ceiling height at the bed position.
- Allow roughly 60cm access along one side.
- Prefer losing width over losing length — people outgrow length first.
- Choose rolled and boxed delivery for awkward access.
- Check bedding availability before committing to a less common size.
- Consider custom cutting for genuinely non-standard spaces.
Frequently asked questions
What is the difference between a shorty and a small single?
Both are 75cm wide. A shorty is 175cm long, a small single 190cm. The shorty is the one that saves floor depth.
Is a small double big enough for two adults?
For occasional use, usually. For two adults every night it is noticeably tight — at 120cm you each have 60cm, which is less than a single.
Can I put a standard mattress on a cabin bed?
Only if the frame takes that size. Cabin beds and mid-sleepers are frequently built for shorty, so check the frame’s stated size rather than assuming.
Are European sizes interchangeable with UK ones?
No. European sizes are generally 200cm long rather than 190cm, and the widths differ too. If you have an IKEA or continental frame, buy the European size rather than the nearest UK equivalent.
The short version
Measure the room, the route and the headroom before you look at anything. Where you have to compromise, give up width rather than length. And if no standard size genuinely fits, a custom cut is a better answer than forcing one that nearly does.
