{"id":64045,"date":"2026-09-13T13:08:00","date_gmt":"2026-09-13T13:08:00","guid":{"rendered":"https:\/\/www.furnitureinfashion.net\/blog\/uk-mattress-sizes-chart-standard-sizes-depth-ranges\/"},"modified":"2026-09-13T13:08:00","modified_gmt":"2026-09-13T13:08:00","slug":"uk-mattress-sizes-chart-standard-sizes-depth-ranges","status":"publish","type":"post","link":"https:\/\/www.furnitureinfashion.net\/blog\/uk-mattress-sizes-chart-standard-sizes-depth-ranges\/","title":{"rendered":"UK Mattress Sizes Chart: Every Standard Size With Depth Ranges"},"content":{"rendered":"<p>UK mattress sizes are fixed and well established, and the six that matter are small single at 75cm by 190cm, single at 90cm by 190cm, small double at 120cm by 190cm, double at 135cm by 190cm, king at 150cm by 200cm and super king at 180cm by 200cm. Length is the detail most people miss: the two largest sizes are 10cm longer than everything below them.<\/p>\n<p>Depth is not standardised at all. Mattresses commonly run from around 15cm to 30cm, and that variation is what causes mismatched bedding, an ottoman lid that will not close and a divan that ends up higher than the bedside table. Size fixes the bed frame; depth decides how the bed behaves in the room.<\/p>\n<h3>Key findings at a glance<\/h3>\n<ul>\n<li>UK mattress sizes differ from European sizes of the same name, so a continental double at 140cm by 200cm will not fit a UK 135cm by 190cm frame.<\/li>\n<li>King and super king mattresses are 200cm long, while every size from small single to double is 190cm long.<\/li>\n<li>Mattress depth is a manufacturer choice rather than a standard, typically 15cm to 30cm, and deep mattresses need deep fitted sheets rather than standard ones.<\/li>\n<li>The Nationally Described Space Standard sets 7.5 square metres as the minimum for a single bedroom and 11.5 square metres for a double, which is the reason small doubles exist as a category.<\/li>\n<li>Total sleeping height is the sum of the base and the mattress, and a comfortable perching height for most adults is around 55cm to 65cm from floor to mattress top.<\/li>\n<li>Allow 60cm to 75cm of walkway on at least one side of a double bed, and on both sides where two people use it.<\/li>\n<li>The small double at 120cm wide is a UK specific size and is the size that rescues box rooms, single bedrooms in flats and guest rooms that also serve another purpose.<\/li>\n<\/ul>\n<h3>The sizes in full<\/h3>\n<p>The chart below lists the standard UK mattress sizes with their imperial names, the room widths they realistically need and the depth ranges commonly available. Dimensions are standard specification rather than statistical findings, and depth ranges describe what is typically made rather than any required standard.<\/p>\n<table>\n<thead>\n<tr>\n<th>Size name<\/th>\n<th>Imperial name<\/th>\n<th>Dimensions<\/th>\n<th>Common depth range<\/th>\n<th>Practical minimum room width<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Small single<\/td>\n<td>2ft 6in<\/td>\n<td>75cm by 190cm<\/td>\n<td>14cm to 22cm<\/td>\n<td>195cm with a bedside table<\/td>\n<\/tr>\n<tr>\n<td>Single<\/td>\n<td>3ft<\/td>\n<td>90cm by 190cm<\/td>\n<td>15cm to 25cm<\/td>\n<td>210cm with a bedside table<\/td>\n<\/tr>\n<tr>\n<td>Small double<\/td>\n<td>4ft<\/td>\n<td>120cm by 190cm<\/td>\n<td>16cm to 28cm<\/td>\n<td>240cm with access on one side<\/td>\n<\/tr>\n<tr>\n<td>Double<\/td>\n<td>4ft 6in<\/td>\n<td>135cm by 190cm<\/td>\n<td>16cm to 30cm<\/td>\n<td>255cm with access on one side<\/td>\n<\/tr>\n<tr>\n<td>King<\/td>\n<td>5ft<\/td>\n<td>150cm by 200cm<\/td>\n<td>18cm to 32cm<\/td>\n<td>290cm with access on both sides<\/td>\n<\/tr>\n<tr>\n<td>Super king<\/td>\n<td>6ft<\/td>\n<td>180cm by 200cm<\/td>\n<td>20cm to 34cm<\/td>\n<td>320cm with access on both sides<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Two less common sizes exist alongside these. A small double is sometimes listed as a three quarter bed, which is the same 120cm width. Emperor and caesar sizes above super king are made by some manufacturers but are not standard, and bedding for them is a special order rather than a shelf purchase.<\/p>\n<h3>Why UK and European sizes cannot be swapped<\/h3>\n<p>The naming overlaps and the dimensions do not. A European double is commonly 140cm by 200cm, which is 5cm wider and 10cm longer than a UK double. A European king is often 160cm by 200cm against the UK king at 150cm by 200cm. A mattress bought abroad, or a continental mattress bought online, will usually be too large for a UK frame and always wrong for UK fitted sheets.<\/p>\n<p>This matters most with imported bed frames. If a frame is built to continental dimensions, a UK mattress will leave a gap at the sides or the foot, and that gap is a genuine hazard in a child&#8217;s bed. When we specify our <a href=\"https:\/\/www.furnitureinfashion.net\/beds\/\">modern beds UK<\/a> the internal frame dimension is matched to UK mattress sizes, and we would always suggest checking the internal measurement rather than the name of the size.<\/p>\n<h3>Depth is the specification nobody checks<\/h3>\n<p>Mattress depth has increased over time as pocket spring counts, foam layers and pillow tops have been added, and there is no standard governing it. The consequences are practical.<\/p>\n<p>Fitted sheets are made to two broad depths. Standard sheets suit mattresses up to around 25cm, and deep fitted sheets are needed beyond that. A 30cm mattress under a standard sheet will pull the corners off during the night.<\/p>\n<p>Ottoman and gas lift bases have a depth ceiling. A very deep mattress raises the weight and the pivot point, and on some bases the lid will not sit level. If the bed has lift up storage, check the maximum mattress depth the base is designed for before buying the mattress. Our <a href=\"https:\/\/www.furnitureinfashion.net\/ottomans\/\">ottoman beds UK<\/a> state that figure for exactly this reason.<\/p>\n<p>Headboard proportion changes too. A deep mattress raises the sleeping surface and reduces the visible headboard above it, so a low headboard that looked balanced in a photograph can nearly disappear behind pillows. Where the headboard is a design feature, work out the total height from floor to mattress top and check how much board remains above it.<\/p>\n<h3>Sizing the bed to a real British bedroom<\/h3>\n<p>The Nationally Described Space Standard sets the minimum single bedroom at 7.5 square metres and the double at 11.5 square metres, and a great deal of the existing housing stock predates any such guidance. That is the context in which the small double exists: a 120cm bed gives an adult noticeably more width than a single without demanding the floor area of a 135cm double.<\/p>\n<p>Three clearances decide whether a bed suits a room. A walkway of 60cm to 75cm on the access side, at least 60cm at the foot of the bed if there is a route past it, and 90cm in front of any wardrobe so the doors can open and someone can stand in front of them. Sliding wardrobe doors reduce that last figure, which is often the argument for choosing them in a small room.<\/p>\n<p>Bedside furniture is the usual casualty. If the room cannot give 40cm beside the bed for a cabinet, a wall mounted shelf or a narrow pedestal does the same job without taking floor area. Our <a href=\"https:\/\/www.furnitureinfashion.net\/bedside-cabinets\/\">modern bedside cabinets UK<\/a> include slim widths intended for exactly that gap.<\/p>\n<h3>What this means for UK homes<\/h3>\n<p>Measure the room before choosing the size, and mark the bed out on the floor with masking tape including the frame overhang. Frames are wider than their mattresses, typically by 5cm to 15cm each side depending on the style, and upholstered frames are usually the widest.<\/p>\n<p>If you are between a small double and a double, let the walkway decide. A 135cm bed with a 45cm gap beside it is less comfortable to live with than a 120cm bed with a 70cm gap, particularly in a room where the door opens inward.<\/p>\n<p>Check length for tall sleepers. Anyone over about 185cm should be looking at a king or super king for the extra 10cm of length rather than for the width, and that alone is a reasonable reason to step up a size.<\/p>\n<p>Buy the mattress and the base as a pair where you can. Depth, base type and total height interact, and the difference between a bed that is easy to get out of and one that is not is usually 5cm of total height rather than anything to do with the mattress itself. When replacing only the mattress, measure the internal frame dimension and the maximum depth the frame allows, then match those figures against our <a href=\"https:\/\/www.furnitureinfashion.net\/mattresses\/\">modern mattresses UK<\/a> before ordering.<\/p>\n<h3>Methodology<\/h3>\n<p>This 2026 reference was compiled by the editorial team at Furniture in Fashion from standard UK mattress and bed frame dimensions, commonly manufactured depth ranges, and recognised circulation clearances for bedrooms. Published UK housing context is named in the text where it applies, including the Nationally Described Space Standard. Depth ranges describe what manufacturers typically produce rather than any regulated specification, and no depth standard exists. The report includes no proprietary sales data, no search data and no survey fieldwork, and no figures have been presented that are not standard published dimensions.<\/p>\n<h3>Citing this report<\/h3>\n<p>Media and websites may cite this size chart with credit to Furniture in Fashion and a link to <a href=\"https:\/\/www.furnitureinfashion.net\">Furniture in Fashion<\/a>. It is a specification reference drawn from standard UK mattress dimensions and bedroom clearance guidance rather than a statistical study.<\/p>\n<h3>Frequently asked questions<\/h3>\n<h3>What are the standard UK mattress sizes?<\/h3>\n<p>Small single 75cm by 190cm, single 90cm by 190cm, small double 120cm by 190cm, double 135cm by 190cm, king 150cm by 200cm and super king 180cm by 200cm.<\/p>\n<h3>Is a UK double the same as a European double?<\/h3>\n<p>No. A UK double is 135cm by 190cm and a European double is commonly 140cm by 200cm, so neither the mattress nor the bedding is interchangeable.<\/p>\n<h3>How deep should a mattress be?<\/h3>\n<p>There is no standard. Most fall between 15cm and 30cm, and the depth matters mainly for fitted sheet fit, storage base compatibility and how high the bed sits in the room.<\/p>\n<h3>What size bed fits in a small UK bedroom?<\/h3>\n<p>A small double at 120cm wide is usually the largest sensible choice in a room that cannot give a 60cm to 75cm walkway beside a 135cm double. Measure the walkway first and size the bed to what is left.<\/p>\n<h3>Do I need a deep fitted sheet?<\/h3>\n<p>Beyond about 25cm of mattress depth, yes. Standard fitted sheets will not hold the corners on a deeper mattress and will pull loose overnight.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Furniture in Fashion sets out the six standard UK mattress sizes and the depth ranges that sit alongside them. Small single measures 75cm by 190cm, single 90cm by 190cm, small double 120cm by 190cm and double 135cm by 190cm, while king at 150cm by 200cm&#8230;<\/p>\n","protected":false},"author":4,"featured_media":64046,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[22],"tags":[5701,1147,5700,974],"class_list":["post-64045","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bedroom-furniture","tag-bed-dimensions","tag-bedroom-planning","tag-mattress-sizes","tag-small-bedrooms"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/posts\/64045","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/comments?post=64045"}],"version-history":[{"count":0,"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/posts\/64045\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/media\/64046"}],"wp:attachment":[{"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/media?parent=64045"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/categories?post=64045"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.furnitureinfashion.net\/blog\/wp-json\/wp\/v2\/tags?post=64045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}