A 3 4 bed measures 120cm wide by 190cm long. In imperial terms that is 4ft by 6ft 3in, and the name comes from it being roughly three quarters the width of a full double bed. In UK listings it is more commonly sold as a small double, and the two terms describe exactly the same size.
It sits between a single at 90cm and a standard double at 135cm. That places it 30cm wider than a single and 15cm narrower than a double, which is enough to change how a room works in both directions.
Three quarter bed is an older term that predates modern UK size labelling. Because it is less standardised than single, double or king, it occasionally gets used loosely for anything between a single and a double, which is why checking the actual centimetre measurement always matters more than the name.
You may see the same bed described as a small double, a four foot bed, a 3 4 bed or a queen in some imported ranges. If a listing gives 120cm by 190cm, you have the size the UK market treats as a small double, and bedding sold as small double will fit it.
A 3 4 bed makes most sense for a single adult who finds a 90cm mattress restrictive. The extra 30cm allows room to change position during the night without reaching the edge, which improves sleep for anyone who moves a lot.
It also works for a couple in a room that genuinely cannot take a 135cm double. Two people on a 120cm mattress have 60cm each, which is tight but workable for occasional use. As a permanent arrangement for two adults, most people find it too narrow.
In a guest room, a 3 4 bed handles both situations: a single visitor sleeps comfortably, and a couple can manage for a night or two. That flexibility is why it appears so often in second bedrooms in newer UK homes.
A 3 4 bed with access down one side needs a room around 2.2m wide, allowing for the frame width plus a 70cm walkway. With access on both sides, that rises to around 2.6m.
Length is easier because 190cm matches a single and a double. Allow 60cm at the foot if you need to cross that end of the room, or place the bed so the foot faces a wall if space is tight.
Remember that the frame is wider than the mattress. A slim metal frame adds around 5cm in total, while a padded fabric frame with deep side rails can add 10cm or more. Our modern small double fabric beds UK sale listings show the external width for each design so you can plan to the real figure.
This is where the 3 4 size demands more attention than a single or a double. Small double bedding at 120cm by 190cm exists but is stocked less widely than the mainstream sizes.
For the duvet, a standard double duvet at 200cm by 200cm works well on a 120cm mattress and gives a generous overhang. A single duvet at 135cm by 200cm is too narrow and leaves the edges exposed.
Fitted sheets are the real constraint, since these must be the correct 120cm by 190cm size. A double fitted sheet on a small double mattress bunches and pulls loose. It is worth buying two or three fitted sheets when you buy the bed, so laundry days are never a problem.
Mattress protectors follow the same rule. Check skirt depth against your mattress depth if you choose a mattress deeper than about 25cm.
For a single sleeper, mattress choice follows the usual rules: match firmness to body weight and sleeping position. Side sleepers generally need enough give at the shoulder and hip, while back and front sleepers usually prefer firmer support.
Where two people share a 120cm mattress, motion transfer matters more than it would on a wider bed, because there is less distance between sleepers. Pocket sprung and hybrid mattresses handle this better than continuous coil constructions.
Edge support deserves attention on a narrower shared mattress. A mattress with reinforced edges gives usable sleeping surface right to the sides, which effectively makes a 120cm bed feel wider than one that collapses at the perimeter.
The area beneath a 120cm bed offers around 2.3 square metres of storage, which is substantial in a room too small for extra furniture.
Drawer bases in small double size are widely available and suit bedding, towels and folded clothing. Two deep drawers along one side is the most common configuration.
Ottoman lift up bases give one large compartment and hold more than drawers. On a 120cm bed the mattress is light enough to lift comfortably on gas struts. Check the lift direction against a sloping ceiling or a window behind the bed.
Where the base is low and offers no storage, go vertical instead. Our modern chest of drawers UK sale range includes tall narrow designs that use less floor area than wide low chests.
Going from a single to a 3 4 costs 30cm of floor width and gains 30cm of mattress. In a room around 2.4m wide, that trade is often worth making for an adult sleeper, because the walkway remains usable and the sleeping comfort improves noticeably.
Going from a 3 4 to a double costs another 15cm and gains 15cm of mattress. For a single sleeper the benefit is smaller, since 120cm already gives plenty of room to move. For a couple it is significant, taking each person from 60cm to 67cm.
The practical rule is straightforward: if the room can take a double with proper walkways and two people will use it, choose the double. If one person will use it, or the room simply cannot take 135cm plus access, the 3 4 is the better fit.
Because it is less common than single and double, the choice in 120cm is narrower, though it has grown considerably as UK second bedrooms have got smaller.
Fabric frames are well represented and give a comfortable padded headboard. Wooden frames in 120cm suit rooms with timber flooring or fitted joinery, and our modern small double wooden beds UK selection covers both slim and more substantial profiles. Metal frames add the least width, which helps when the bed only just fits.
Headboard height is worth checking against a window behind the bed. In smaller rooms where a 3 4 bed usually sits, a lower headboard keeps the space feeling open.
In a loft conversion, a 120cm bed often fits where a double will not, particularly when the sloping ceiling limits how far the bed can sit from the wall. Position the low eaves at the foot rather than along a sleeping edge.
In a teenager’s room, a 3 4 bed with storage replaces a single plus a chest of drawers, freeing floor space for a desk. It also lasts into adulthood in a way a small single does not.
In a guest room that doubles as a study, a 120cm bed leaves enough width for a compact desk along the opposite wall in most second bedrooms.
A 120cm mattress is easier to carry upstairs than a double, but still awkward if bought traditionally. Rolled mattresses compress into a manageable package and expand once unwrapped, which suits tight stair turns and loft ladders.
Flat packed frames pass through almost any access. Check the packaging dimensions against the narrowest point on your route, not just the bedroom door. At Furniture in Fashion we list packaging sizes on every product page, and we deliver free to most UK mainland postcodes.
Yes. Both describe a bed measuring 120cm by 190cm. Small double is the more common term in current UK listings.
They can, with around 60cm each. It works for occasional use but most couples find it too narrow for every night.
Use small double fitted sheets at 120cm by 190cm. A standard double duvet at 200cm by 200cm works well over the top.
Around 2.2m wide with access on one side, or 2.6m with access on both. The length requirement matches a single at 190cm plus any walkway at the foot.
Yes, drawer bases and ottoman lift up bases are both available in 120cm, and they are among the most useful ways to add storage to a small bedroom.
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