A standard UK single bed is 190cm long and 90cm wide. That measurement refers to the mattress, which is the figure most people need when they are buying bedding or working out whether a bed will fit against a particular wall. The bed frame itself is always slightly larger, usually somewhere between 195cm and 205cm in overall length, because the frame has to hold the mattress inside a surround and often carries a headboard at one end.
So if you are measuring a room and want a single figure to plan around, allow 200cm of length and 100cm of width for a single bed. That gives you a realistic footprint rather than a mattress measurement that ignores the timber, upholstery or metalwork holding everything together.
Bed frames are built around the mattress rather than to the same size as it. A wooden frame has side rails and end panels, each of which adds a few centimetres. An upholstered frame adds padding and fabric on top of the timber structure, so a fabric single bed often measures around 200cm long once the headboard is included. Metal frames tend to be the leanest of the three, since tubular steel takes up very little room around the mattress edge.
Headboard height is a separate consideration and does not affect floor length, but a deep footboard does. Some frames have a solid panel at the foot of the bed, and that panel can push the total length closer to 205cm. If your room has a radiator, a skirting board with a thick profile or a chimney breast at one end, those extra centimetres matter more than people expect.
Length and width tell you about the bed. Circulation space tells you whether the room will actually work. As a general rule, leave at least 60cm of clear floor on the side you get in and out of, and around 75cm if you want to make the bed comfortably from that side. At the foot of the bed, 50cm is usually enough to walk past without turning sideways.
In a small box room, pushing a single bed lengthways against one wall and into a corner is often the most sensible approach. It frees the centre of the floor, which is what makes a small room feel calm rather than crowded. If the room has to hold a wardrobe as well, remember that a hinged door needs swing room, so plan the bed position around the wardrobe rather than the other way round.
Confusion usually comes from the middle sizes. A single mattress is 90cm by 190cm. A small double is 120cm by 190cm, so it is 30cm wider but exactly the same length. A standard double is 135cm by 190cm, again keeping the same 190cm length. Length only changes when you move up to king size, which is 200cm long.
That consistency is useful. If you have a recess or alcove that measures 195cm deep, you can fit a single, a small double or a double into it, and the only question is width. It also means a taller sleeper will not gain any length by moving from a single to a double. For extra length, the step up is a king size or a long single, which some ranges offer at 200cm.
Style choices change how large a single bed feels. A low frame with slim rails reads as lighter in a small space, while a tall padded headboard draws the eye upwards and gives a modest room a more considered look. Upholstered designs soften a room that has a lot of hard surfaces, and our single fabric beds UK sale range covers everything from plain linen effect finishes to deeper buttoned headboards.
Timber suits rooms with warmer schemes and tends to age well in a household where a bed gets heavy use, such as a teenager’s room or a guest room that doubles as a study. Our modern single wooden beds UK collection includes slatted designs that keep the bed light on its feet visually while still feeling solid underfoot.
Storage is the other decision worth making early. A single bed with drawers underneath removes the need for a separate chest in a small room, which can be the difference between a workable layout and a cramped one.
Depth is measured separately from length and width, and it varies far more. A budget foam mattress may be 16cm deep, while a pocket sprung model with a pillow top can reach 30cm. Depth affects two things: the sleeping height of the bed and how the bedding sits. A very deep mattress in a frame with high side rails can look sunken, while a shallow mattress in the same frame can leave the rails standing proud.
Sprung slats give a little flex and suit most mattress types. Solid platform bases feel firmer and work well with memory foam. Whichever you choose, check the slat gap, because gaps wider than about 7cm can allow a foam mattress to sag between them over time. Our mattresses UK sale selection lists depth alongside size, so you can match a mattress to the frame you already have rather than guessing.
Single bedding in the UK is cut for a 90cm by 190cm mattress. A single duvet is typically 135cm by 200cm, which gives enough overhang on both sides without pooling on the floor. Fitted sheets are sized to the mattress, though deep mattresses need a deeper skirt, so check that figure if your mattress is over 25cm.
Around the bed, scale matters more than it does in a larger room. A narrow bedside cabinet at roughly the same height as the mattress top keeps the whole arrangement level and easy to reach. Slim designs in our modern bedside cabinets UK range work well beside a single bed where a full sized nightstand would crowd the doorway.
Most UK housing stock includes at least one bedroom that was never intended to hold anything larger than a single. Victorian and Edwardian terraces often have a narrow third bedroom above the stairs, and newer estate housing frequently has a fourth room around 2.4m by 2.6m. In those rooms a single bed is not a compromise, it is the size the space was designed around.
Singles also earn their place in guest rooms where two beds are more useful than one. Two singles placed with a shared bedside table between them can be pushed together when a couple stays, provided the mattresses are the same depth. In a child’s room, a single is usually the size a first proper bed steps up to from a cot bed, and it stays useful into the teenage years.
If you are furnishing a whole room rather than replacing one item, it can help to browse a full collection so finishes match across the bed, wardrobe and drawers. You will find bedroom pieces alongside the rest of our home collections at Furniture in Fashion, and we offer free delivery to most UK mainland postcodes.
Measure the wall you intend to place the bed against, then measure the opposite wall, because rooms in older homes are rarely truly square. Note the position of the radiator, the door swing and any window sill that sits low enough to be blocked by a headboard. Check the loft hatch or ceiling slope if the room is in a converted roof space, since sloping ceilings often decide which end of the bed the headboard has to go.
Finally, measure the route into the room. A single bed is the easiest size to carry upstairs, but a fully assembled divan base or a very deep mattress can still catch on a tight landing turn. Flat packed frames avoid that problem entirely, and most single frames are light enough for one person to move once assembled.
Not every single bed is a conventional frame. Divan singles have an upholstered base with the mattress sitting on top, and they usually measure very close to the 90cm mattress width because there are no side rails. That makes them the narrowest option in real terms, which is useful in an alcove where a frame would be a centimetre or two too wide.
Day beds use the same 90cm by 190cm mattress but add a back and sides, so they read as seating during the day. They are a sensible choice for a study or a small spare room that has to serve two purposes. Guest beds with a pull out second mattress underneath also use single sizing, though the lower mattress is often shallower than the upper one, so check both depths if the beds will be used together.
Bunk beds and cabin beds are built around the single size too. Bunks generally specify a maximum mattress depth for the top bunk, and that figure exists for safety rather than appearance, so it is worth following closely.
Single frames take the same everyday strain as larger beds, and often more in a child’s room where the bed doubles as a seat and a climbing frame. Tighten the corner fixings and headboard bolts twice a year, ideally when you change the bedding for the season. Five minutes of work prevents the loose joints that lead to creaking.
Rotate the mattress head to foot every few months so wear spreads across the surface rather than concentrating in one place. If the mattress is single sided it should be rotated but not flipped. Keep a small gap between the headboard and the wall so the two surfaces do not rub, and lift rather than drag the frame when cleaning underneath, since dragging puts a sideways load on joints that were not designed for it.
The mattress is 190cm long. The frame is usually 195cm to 205cm long once the rails and headboard are included, so plan your room around 200cm to be safe.
A long single, sometimes called an extra long single, keeps the 90cm width but extends to 200cm in length. It suits taller sleepers who want a narrow bed.
At 90cm wide it is not designed for two adults on a regular basis. A small double at 120cm is the narrowest size normally considered practical for two people.
Standard singles do. Long singles need a longer fitted sheet, and very deep mattresses need a fitted sheet with a deeper skirt, so check the depth figure before ordering.
A frame can sit flush against the wall, though leaving one or two centimetres stops the headboard rubbing paintwork. Allow at least 60cm of clear floor on the access side.
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