A 3 4 bed measures 120cm wide by 190cm long, or 4ft by 6ft 3in. The name refers to a bed roughly three quarters the width of a traditional double, and in current UK retail it is listed as a small double. Some sellers describe it as a queen single, particularly in Ireland and Australia.
If you have found the term on an older frame, in a rental listing, or in a house survey, 120cm is the measurement to plan around. Measure the existing mattress before buying replacements, though, because pre war frames were built to less consistent standards than modern manufacturing.
Bed naming in the UK still carries traces of the imperial system. A double was commonly 4ft 6in, so a 4ft bed became three quarters, written as 3 4 or 3/4. It is a rough approximation rather than exact arithmetic, which is why the term causes confusion.
Occasionally you will see 3ft 6in beds labelled the same way, particularly in antique furniture listings where a bed sits between a 3ft single and a 4ft small double. A 15cm discrepancy makes every fitted sheet wrong, so treat the label as a starting point and take a tape measure to the frame itself.
Placing 3 4 in context: single is 90cm by 190cm, small double or 3 4 is 120cm by 190cm, double is 135cm by 190cm, king is 150cm by 200cm, and super king is 180cm by 200cm.
The length holds at 190cm for the first three sizes. Only from king upwards does the mattress lengthen to 200cm. So a 3 4 bed adds 30cm of width over a single with no additional legroom, which is the key trade off to understand before ordering.
The 3 4 bed exists to solve a specific British housing problem: the second bedroom that is too big for a single and too small for a double. That describes a very large number of rooms in terraced houses, 1930s semis and modern flats.
It also handles awkward geometry well. A 120cm width frequently fits into the space beside a chimney breast where 135cm will not. In a loft conversion, the narrower footprint lets you place the bed further from the low eaves, giving proper headroom on both sides.
Guest rooms benefit too. A 3 4 gives a single visitor a genuinely comfortable night and copes with two at a push, while leaving room for a chest of drawers and a chair, which a double often does not.
Our modern small double wooden beds UK sale range includes low headboard designs suited to sloping ceilings and alcove placements.
This is where 3 4 beds are most often specified deliberately rather than by necessity. A single bed becomes uncomfortable for a growing teenager, but a double consumes floor space that is needed for a desk, storage and somewhere for friends to sit.
A 120cm bed against one wall in a 2.4m wide room leaves around 115cm clear, which accommodates a desk chair pulled out and a walkway. That balance is difficult to achieve with a double.
Storage bases work particularly well in this context, since teenage bedrooms accumulate more than they can hold. Drawer bases suit clothing and sports kit with daily access. Lift up designs handle bulkier items, and our modern ottoman beds UK sale selection covers small double sizes.
For one adult, a 3 4 is spacious. There is room to change position freely, to lie diagonally, and to keep a book or tablet beside you. Anyone moving up from a single notices the difference immediately.
For two adults, each person has 60cm. That is workable for occasional nights and for couples who sleep close, but it is narrower than a single mattress each and it becomes noticeable over time. If two adults will use the bed nightly, a double or king is the better long term choice.
Mattress construction affects this more than the numbers suggest. A pocket sprung mattress limits motion transfer between two sleepers, which makes a narrow bed feel less crowded than an open sprung equivalent at the same width. Our modern mattresses UK sale range includes small double sizes across pocket sprung, memory foam and hybrid designs.
Small double bedding is stocked across the UK but the choice is narrower than for the more common sizes. Fitted sheets must be exact: a single sheet will not stretch and a double sheet will not grip.
Duvets are flexible. A double duvet at 200cm by 200cm gives a generous drape over a 120cm mattress and is easy to find. If two people share, two single duvets side by side is a practical alternative that many households prefer.
When you find a fitted sheet or protector in small double that you like, buy a spare. Ranges rotate, and replacing a discontinued design in a less common size is more effort than it sounds.
Once the bed is placed, the remaining floor space needs to work hard. Slim bedside units of 35cm to 40cm wide preserve the walkway where a standard 45cm cabinet would not. A wall mounted shelf with a small lamp is an even lighter option in genuinely tight rooms.
Wardrobe doors are the main constraint. Hinged doors need roughly their own width in clear floor, which in a 2.4m room can force the bed uncomfortably close to the opposite wall. Sliding doors remove that requirement entirely, and our modern sliding wardrobes UK range includes shallower depths for smaller bedrooms.
Chest of drawers depth matters too. A 40cm deep unit rather than a standard 45cm frees 5cm of walkway, and in a small room that margin is often what makes the layout work.
Because the size is less common than single and double, check availability of both frame and mattress before committing to one. There is little point ordering a frame if the mattress you want is not made in that size.
Delivery is straightforward, and the narrower frame is easier to get up a turning staircase than a double. Rolled mattresses arrive boxed and need 24 to 72 hours to expand fully once unwrapped.
You can see the full small double range, with frame and mattress dimensions listed separately, at Furniture in Fashion, where we offer free delivery to most UK mainland postcodes.
It describes a bed roughly three quarters the width of a traditional 4ft 6in double, giving a 4ft or 120cm wide mattress. In modern UK retail it is sold as a small double.
Yes, both refer to a 120cm by 190cm mattress. Small double is the term used by most current retailers, while 3 4 survives on older frames and in secondhand listings.
Fitted sheets and protectors must be small double or 120cm specific. A standard double duvet at 200cm by 200cm works well and is far easier to source.
It gives each person 60cm of width, which suits occasional use and guest rooms. For two adults sharing every night, a double or king will be more comfortable long term.
Often yes, placed along the longest wall. A room of around 2.2m by 2.8m usually accommodates one with a single clear walkway, though wardrobe door swing needs checking first.
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