A UK super king size bed measures 180cm wide by 200cm long, which converts to approximately 6 feet by 6 feet 6 inches. It is the largest standard bed size sold in Britain and gives each of two sleepers 90cm of width, the same space a single mattress provides for one person.<\/p>\n
Those are the mattress dimensions. The bed frame itself will be larger, typically between 185cm and 195cm wide once side rails or upholstery are included, and the headboard adds to the overall length. When planning a room, the frame measurement is the number that matters.<\/p>\n
Set against a king at 150cm by 200cm, a super king adds 30cm of width with no change in length. Against a standard double at 135cm by 190cm, it adds 45cm of width and 10cm of length. That is a substantial jump, and it changes the character of a bedroom as much as it changes the sleeping experience.<\/p>\n
The 90cm each figure is the useful way to think about it. On a double, two adults share 135cm, giving each person 67.5cm, which is narrower than a single bed. On a super king each person has a full single bed width. For couples who sleep lightly, share with children in the morning, or simply move a lot during the night, that difference is the main reason to consider the size.<\/p>\n
It is worth noting that some European beds described as super king measure 180cm by 210cm or 200cm by 200cm. If you are looking at an imported frame, check the figures rather than the name.<\/p>\n
A super king needs a genuinely generous room. Allowing 70cm on each side for access and 60cm at the foot, the bed plus circulation comes to roughly 3.2 metres wide by 2.6 metres deep, and that is before any wardrobe or chest of drawers is added.<\/p>\n
In practical terms, a room of around 3.5 metres by 3.5 metres accommodates a super king comfortably with bedside cabinets and a chest of drawers. Anything much under 3.2 metres wide will feel tight, and access down one side may need to be sacrificed.<\/p>\n
Ceiling height and window position matter too. A wide bed with a tall headboard suits rooms with reasonable ceiling height. In a loft conversion with sloping eaves, the bed often has to sit under the slope, which limits headboard height and makes one side of the bed awkward to use. Measure the height at the point where the mattress edge will sit, not just at the centre of the room.<\/p>\n
This is where many super king purchases run into trouble. A 180cm sprung mattress is a large, semi rigid object, and British staircases, particularly in terraced and Victorian properties, are rarely forgiving.<\/p>\n
Measure the narrowest point of the route: the front door, any hallway turn, the stair width, the landing turn and the bedroom door. Then compare against the mattress dimensions. A mattress can be tilted and angled, but it cannot be folded.<\/p>\n
There are two reliable solutions. A rolled foam or hybrid mattress arrives compressed in a box and expands in the room, which sidesteps access problems entirely. Alternatively a zip and link mattress arrives as two 90cm sections that fasten together, which is easy to carry upstairs and has the additional benefit of letting each sleeper choose their own firmness. Frames are usually less of a problem because they arrive flat packed, though check the length of the longest component such as the side rails.<\/p>\n
Super king bedding is a distinct size and cannot be substituted with king. A super king duvet typically measures 260cm by 220cm, and fitted sheets are made to 180cm by 200cm with a stated pocket depth.<\/p>\n
Pocket depth is worth checking carefully. Deep pocket sprung mattresses can exceed 30cm, and adding a topper pushes that further. Buy sheets rated for the total depth or the corners will lift during the night.<\/p>\n
Pillows work differently at this width. Two standard UK pillows leave a visible gap in the middle, so many people use three standard pillows or a pair of continental square pillows measuring 65cm by 65cm. Mattress protectors, electric blankets and valances all need to be bought in super king specifically, and the range available is narrower than for king, so it is worth confirming availability for anything you rely on.<\/p>\n
A super king dominates a room visually, and the furniture around it needs to be scaled accordingly. Narrow bedside cabinets look undersized beside a 180cm bed, while a low chest of drawers helps balance the horizontal mass of the bed.<\/p>\n
Proportion is the key idea. Choose bedside cabinets of a similar height to the mattress top, ideally within 50mm, so that lamps and books sit at a usable level. Wider cabinets of 50cm to 60cm hold their own beside a bed of this scale better than slim 35cm ones. Our modern bedside cabinets UK sale<\/a> range covers a good spread of widths for this reason.<\/p>\n Storage needs thought because a super king occupies floor area that might otherwise hold a wardrobe. Fitted or sliding wardrobes use wall space efficiently in a room where the bed takes the centre, and our modern sliding wardrobes UK sale<\/a> selection is useful where hinged doors would foul the bed. An ottoman base is the other route, converting the space under the mattress into usable storage.<\/p>\n Not every frame design is available in super king, since the width demands additional support. Look for a centre rail with at least two central legs, and ideally three on wider designs, because an unsupported 180cm slat span will flex and eventually fail.<\/p>\n Slat spacing is equally important. Gaps of 75mm or less suit foam and hybrid mattresses, while wider spacing is acceptable for sprung mattresses. Solid platform tops give the firmest support and are worth considering if you are using a firm mattress.<\/p>\n Upholstered frames read softer and reduce the visual bulk of a large bed, particularly in pale fabrics. Wooden frames give a more structural look and tend to be the most robust at this width. Our modern super king size beds UK sale<\/a> collection covers both, with dimensions and support specifications listed for each.<\/p>\n The size makes sense in a main bedroom of reasonable proportions where two people share every night, particularly if one or both sleep restlessly, or where children and pets join the bed in the morning. It also suits taller sleepers who value the 200cm length.<\/p>\n It makes less sense in a room under about 3.2 metres wide, in a guest room used occasionally, or where storage furniture is already stretched. In those cases a king at 150cm delivers most of the benefit with far less impact on the room, and leaves budget for a better mattress.<\/p>\nFrames and Base Options<\/h3>\n
Is a Super King the Right Choice?<\/h3>\n