A single bed in the UK measures 90cm wide by 190cm long. That applies to both the mattress and the size designation of the frame, so a 90cm by 190cm mattress will sit correctly in any British single frame. In imperial terms the same bed is 3ft by 6ft 3in.
Two variations exist and both cause problems if overlooked. European single mattresses are commonly 90cm by 200cm, ten centimetres longer than the British standard. And a small single, sometimes sold as a cot bed conversion size, measures 75cm by 190cm. Always confirm both figures rather than just the width.
Placing the single alongside the other British sizes shows where it sits. A small single is 75cm by 190cm. A single is 90cm by 190cm. A small double is 120cm by 190cm. A double is 135cm by 190cm. A king size is 150cm by 200cm. A super king is 180cm by 200cm.
The step from single to small double adds 30cm of width, which is the largest single jump in the British range as a proportion of the starting width. That makes a small double a genuine upgrade for a growing teenager or a guest room that hosts couples, while still fitting rooms that cannot take a full double.
Frame dimensions differ from mattress dimensions. A single frame usually measures 95cm to 100cm wide externally and 195cm to 205cm long including the headboard. Upholstered frames sit at the upper end of both ranges because padded rails and a padded headboard add depth. Use the external figures when checking whether a bed fits between a wall and a chimney breast.
The practical minimum for a single bedroom is around 2m by 2.4m with the bed along one wall. That allows roughly 60cm of walking space on the open side and a little room at the foot for a narrow chest or bookcase.
Where the room is narrower than 2m, positioning the bed lengthways under a window frees the door wall entirely. Check for a radiator first: a mattress pressed against a hot radiator holds heat and can leave bedding uncomfortably warm, and it wastes the output into the mattress rather than the room.
Ceiling height matters in loft conversions. A single under a sloping ceiling works well if the headboard end sits at the tall side, and the sleeping position stays clear of the point where the roof line drops below about 1.2m. Measure at pillow height rather than at floor level.
For two children sharing, twin singles need at least 3m of total width to leave a usable gap. Where that is not available, our modern childrens beds UK sale range includes space saving designs that recover floor area.
Because a single takes up a modest footprint, the frame can do extra work. Drawer bases with two or three drawers along one side replace a chest of drawers in a box room. Guest beds with a pull out mattress underneath convert one single into two when needed. Cabin beds raise the sleeping surface to create a desk or wardrobe below, which suits children’s rooms where the floor area cannot be spared.
Slatted bases are worth seeking out in small rooms. Air moving under the mattress reduces the condensation that builds up on solid bases in cold box rooms, unheated loft spaces and rooms against external walls. Sprung slats also add a small amount of give, which extends mattress life.
For appearance, low frames make a small room feel taller and frames on visible legs let light travel across the floor, which reads as more space. Our single wooden beds UK sale range covers painted and natural timber that stands up to years of use, and the modern single fabric beds UK sale selection suits guest rooms where a padded headboard makes sitting up to read comfortable.
Single mattress depth ranges from about 15cm for basic foam up to 30cm for a deep pocket sprung build. Combined with the frame, that determines the height of the sleeping surface, which affects how easy the bed is to get into and whether a safety rail fits properly.
For a young child, a lower total height of around 45cm to 50cm to the mattress top is easier and safer. For an adult using a single as a main bed, 55cm to 60cm is more comfortable to sit on and rise from. Work backwards from the height you want rather than choosing frame and mattress independently.
Bunk beds impose their own limit. Most specify a maximum mattress depth, usually around 15cm to 18cm, so the safety rail on the top bunk remains high enough above the sleeping surface. Never fit a deeper mattress than the manufacturer states. Depths are listed clearly across our modern mattresses UK sale range so you can match a bunk specification exactly.
British single bedding is cut for 90cm by 190cm. A single duvet measures 135cm by 200cm, which gives sensible overhang on both sides without trailing. Fitted sheets need a wall depth greater than your mattress depth, so a 28cm mattress wants a sheet with a 30cm wall or more.
If your frame takes a 200cm European mattress, British single sheets will be short by ten centimetres and will lift off the corners. Continental sizes are widely available, but you need to buy them deliberately rather than assuming a single sheet fits any single bed.
Mattress protectors follow the same rule. Getting the depth right stops the protector bunching under the sheet, which is a common cause of nightly discomfort that people rarely trace back to the bedding.
Freeing floor space is the main advantage of a single, so use it well. A bedside table of 30cm to 40cm is enough for a lamp, a book and a glass. Wall mounted lights remove the need for a table entirely where the walkway is tight.
Vertical storage beats horizontal in small rooms. A tall narrow wardrobe gives the same hanging capacity as a wide low one while consuming less floor. Shelving above the headboard captures dead space, and under bed boxes on castors handle seasonal bedding without needing a drawer base.
Coordinating pieces keep a small room calm. Buying the bed, wardrobe and drawers in one finish from our bedroom furniture sets UK sale range avoids the visual clutter of mismatched timbers, and the whole range sits alongside every other British size at Furniture in Fashion.
We offer free delivery to most UK mainland postcodes, and Returns are available up to 30 days.
A UK single mattress measures 90cm wide by 190cm long. The frame is typically 95cm to 100cm wide and 195cm to 205cm long externally.
Usually they are 90cm by 200cm, ten centimetres longer than the British standard. British single bedding will not fit a European single mattress properly.
A small single measures 75cm by 190cm. It is 15cm narrower than a standard single and needs its own bedding, which is less widely stocked.
For one adult, yes. Each sleeper on a 135cm double has 67.5cm, so a single gives more width per person. Length rather than width is the usual limitation.
Follow the manufacturer’s stated maximum, which is commonly 15cm to 18cm, so the top bunk safety rail stays high enough above the sleeping surface.
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