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Ottoman Bed Sizes UK: Single, Double, King and Super King Explained
Buying a new bed is exciting. Until you start trying to figure out what size you actually need.
Suddenly you are googling dimensions, measuring your bedroom with a tape measure three times, wondering whether a king size is actually worth it, and trying to remember whether your current mattress is a double or a small double.
Sound familiar?
You are not alone. Bed sizes in the UK are genuinely confusing because there are more options than most people realize, the names are not always intuitive, and the difference between choosing the right size and the wrong size is something you will feel every single morning for the next decade.
This guide makes it simple.
We are going to walk through every standard UK ottoman bed king size, explain the real dimensions in centimetres, tell you exactly how much room each one needs, how much storage each one holds, and help you figure out which size is genuinely right for your bedroom.
By the end, you will know exactly what to order and why.
Why Ottoman Bed Size Matters More Than You Think
Most buyers think about size purely in terms of how much space they have to sleep in. More width equals more comfort, right?
That is part of it. But with ottoman beds specifically, size affects three things simultaneously, and all three matter.
- Sleeping Space: A wider, longer bed is simply more comfortable for most people, especially couples.
- Storage Capacity: Ottoman bed storage scales directly with size. A super king ottoman holds approximately three times the storage of a single ottoman. Choosing a larger size is not just about sleeping comfort; it is also a storage decision.
- Room Fit: An ottoman bed needs clearance to open, space around the sides for comfortable use, and enough overall floor space to avoid making the room feel overwhelmed. Getting the size wrong in this direction is just as problematic as going too small.
According to the Sleep Foundation, both mattress size and bedroom environment significantly affect sleep quality. The right size bed in a well-organised bedroom creates conditions for measurably better rest than an oversized bed in a cluttered, cramped room.
Size is not just a preference. It is a practical decision that affects your sleep, your storage, and your bedroom every single day.
UK Ottoman Bed Sizes at a Glance
Here is a quick reference summary before we go into the detail on each size.
Bed Size | Mattress Width | Mattress Length | Approx. Storage | Minimum Room Size |
Single | 90cm | 190cm | 340 to 450 litres | 2.5m x 3.0m |
Small Double | 120cm | 190cm | 520 to 680 litres | 3.0m x 3.5m |
Double | 135cm | 190cm | 590 to 790 litres | 3.2m x 3.8m |
King Size | 150cm | 200cm | 700 to 1,000 litres | 3.5m x 4.2m |
Super King | 180cm | 200cm | 970 to 1,300 litres | 4.0m x 5.0m |
These are the standard UK dimensions. Ottoman beds are manufactured to these same standard mattress sizes, so any standard UK mattress will fit a correctly sized ottoman base.
Now let us go through each one in detail.
Single Ottoman Bed (90cm x 190cm)
A single ottoman bed is the smallest standard ottoman size available in the UK. The mattress measures 90cm wide and 190cm long, making it suitable for one person and compact enough for smaller bedrooms.
The storage area underneath a single ottoman base typically measures around 175 to 182cm long, 78 to 82cm wide, and 25 to 30cm deep. This gives you approximately 340 to 450 litres of under-bed storage space, which is four to five times more than a standard single divan bed with two drawers.
To put that in practical terms, a single ottoman can hold one medium suitcase lying flat, a folded double duvet, four to six spare pillows, and a set of spare bedding, all at the same time. In a child’s bedroom or compact spare room, that level of storage completely changes how organised the space can be.
The minimum room size for a single ottoman is approximately 2.5m wide by 3.0m long, including enough space to walk around the bed comfortably and for the base to open. If the bed is end-opening, you need at least 50 to 60cm of clearance at the foot. If it is side-opening, you need at least 55 to 65cm on the opening side.
Single ottoman beds are the right choice for children’s bedrooms, teenager’s rooms, compact spare rooms, studio flats, and any situation where a 90cm sleeping width is genuinely sufficient. They are consistently underestimated as a storage solution. Most buyers are surprised by how much fits underneath once they actually use one.
Small Double Ottoman Bed (120cm x 190cm)
The small double ottoman is one of the most underrated sizes in the entire UK bed market, and it deserves more attention than it typically gets.
At 120cm wide and 190cm long, a small double is 30cm wider than a single. That 30cm makes a meaningful difference to sleeping comfort for a single adult who wants more room to stretch out, and it makes the bed genuinely usable for two people on an occasional basis, such as in a guest room.
The storage capacity of a small double ottoman is approximately 520 to 680 litres, depending on the base depth of the specific model. Internally, the storage area typically measures around 175 to 182cm long, 106 to 110cm wide, and 28 to 34cm deep. This is wide enough to lay two medium suitcases side by side, with space remaining for spare bedding and pillows on top.
For guest rooms, studio flats, smaller master bedrooms, and bedrooms that are a little too tight for a full double, the small double ottoman is often the ideal solution. It offers significantly more sleeping space than a single, dramatically more storage than any divan alternative, and a footprint that fits comfortably in rooms where a 135cm double would feel oversized.
The minimum room size for a small double ottoman is approximately 3.0m wide by 3.5m long. For end-opening models, allow 55 to 65cm at the foot. For side-opening models, allow 60 to 70cm on the opening side.
Double Ottoman Bed (135cm x 190cm)
The double ottoman bed is the most popular starting point for couples in the UK, and for straightforward reasons. At 135cm wide and 190cm long, it offers comfortable sleeping space for two people and fits well in the standard UK double bedroom without overwhelming the room.
Storage capacity for a double ottoman is approximately 590 to 790 litres. The internal storage area typically measures around 175 to 183cm long, 120 to 124cm wide, and 28 to 35cm deep. Two to three large suitcases fit side by side with room remaining for bedding, pillows, and seasonal clothing. For many UK couples, the storage in a double ottoman completely eliminates the need for additional bedroom storage furniture.
The minimum room size for a double ottoman is approximately 3.2m wide by 3.8m long. Ideally, the room is at least 3.5m wide by 4.0m long for comfortable movement around all sides of the bed.
For end-opening models, allow at least 60 to 70cm clearance at the foot. For side-opening models, allow 60 to 70cm on the opening side. Always measure your specific room against these requirements before ordering.
One practical note about the double size specifically. The 190cm mattress length is the standard for all beds up to double size in the UK. When you step up to king or super king, the mattress length increases to 200cm. If you or your partner is taller than around 180cm, this extra 10cm of length can be a relevant factor in your size decision.
Ottoman Bed King Size (150cm x 200cm)
The ottoman bed king size is the most popular overall ottoman size in the UK, and it is consistently the category that generates the most buyer interest and satisfaction.
At 150cm wide and 200cm long, a king size ottoman is 15cm wider than a double and 10cm longer. That combination makes a genuinely significant difference to how comfortable two people sleeping together actually feel. Many couples who upgrade from a double to an ottoman bed king size describe it as one of the best bedroom decisions they have ever made.
The storage capacity of an ottoman bed king size is approximately 700 to 1,000 litres, depending on the base depth of the specific model. The internal storage area typically measures around 185 to 192cm long, 134 to 138cm wide, and 30 to 38cm deep. In models with a 35cm or deeper base, full-size check-in suitcases fit lying flat, which is one of the most practical storage benefits available in any size bed.
Three to four large suitcases, a complete seasonal bedding set for two people, spare pillows, and seasonal wardrobe items in vacuum bags all fit comfortably in an ottoman bed king size simultaneously. For couples in homes without loft storage, or in flats where every storage solution matters, this is a transformative amount of hidden space.
The minimum room size for an ottoman bed king size is 3.5m wide by 4.2m long. Ideally, the room measures at least 4.0m wide by 4.5m long. For end-opening models, allow 65 to 80cm clearance at the foot. For side-opening models, allow 65 to 75cm on the opening side.
The 200cm mattress length of the ottoman bed king size is an important practical upgrade over double and small double sizes. It is 10cm longer than the 190cm standard, which makes a noticeable difference in comfort for taller sleepers.
If your bedroom can comfortably accommodate a king size ottoman with adequate clearance, this is almost always the size we would recommend for a couple’s main bedroom. The combination of sleeping space, storage capacity, and everyday comfort is genuinely hard to beat at any price point.
Super King Ottoman Bed (180cm x 200cm)
The super king ottoman bed is the largest standard ottoman size available in the UK. At 180cm wide and 200cm long, it offers the most generous sleeping space of any standard bed size, and the most impressive storage capacity of any ottoman in the range.
Storage capacity for a super king ottoman is approximately 970 to 1,300 litres, depending on the base depth. The internal storage area typically measures around 185 to 193cm long, 163 to 168cm wide, and 32 to 40cm deep. This is extraordinary storage by any measure. Four to five large suitcases, a complete seasonal wardrobe for two people, multiple full bedding sets, and significant additional items all fit simultaneously.
For homes without loft space, large families, or buyers who want to eliminate separate storage furniture from the bedroom entirely, a super king ottoman is one of the most effective single-purchase storage solutions available.
The minimum room size for a super king ottoman is 4.0m wide by 5.0m long. This is a substantial room requirement, and it is the reason super king ottomans are best suited to genuinely large master bedrooms rather than standard UK double bedrooms. For end-opening models, allow 70 to 85cm clearance at the foot. For side-opening models, allow 70 to 80cm on the opening side.
The super king is the right choice if your bedroom comfortably accommodates it and you want both maximum sleeping space and maximum storage in a single premium bedroom investment.
How to Choose the Right Ottoman Bed Size for Your Room
Working out the right size comes down to four practical steps. Going through all four in order prevents the most common buying mistakes.
Step One: Measure Your Room Accurately
Measure the full length and width of your bedroom in centimetres. Write down both measurements. Then measure the distance from the floor to the top of your skirting board, the width of your doorway, and the narrowest point of your hallway or staircase access route.
Step Two: Map the Bed Position
Decide where the head of the bed will sit. In most UK bedrooms, this is against the main wall, usually opposite the door. Mark the bed position on your measurements, including the mattress footprint.
Step Three: Check Clearances
From your mapped bed position, check:
- Walking clearance: at least 60cm on both sides of the bed for comfortable everyday movement.
- Opening clearance: for end-opening models, 60 to 80cm at the foot of the bed. For side-opening models, 60 to 75cm on the opening side. These clearances need to be free from furniture, walls, and obstructions.
Step Four: Choose the Largest Size the Room Comfortably Accommodates
Within the constraints identified in steps one to three, choose the largest ottoman size that fits comfortably. More size means more sleeping space and more storage. As long as the clearances and walking space are maintained, bigger is almost always better.
Ottoman Bed King Size vs Double: Is the Upgrade Worth It?
This is the question most buyers ask when they are deciding between a double and a king size ottoman, and the honest answer is: yes, in most cases, the upgrade is worth it.
The additional cost of an ottoman bed king size over a comparable double varies by retailer and model, but typically ranges from around 80 to 200 pounds. Against that cost, you are getting 15cm more sleeping width, a 10cm longer mattress, and approximately 100 to 200 additional litres of storage capacity.
For a couple sleeping in the same bed every night for the next decade, the 15cm of extra width is something you will benefit from every single morning. The longer mattress makes a real difference for taller sleepers. And the additional storage is genuinely useful in almost any UK home.
The upgrade is most clearly worth it when your room comfortably fits a king with adequate clearance, your budget accommodates the additional cost without strain, and you are investing in a main bedroom you will use every day for years.
The upgrade makes less sense if the room is borderline for king size dimensions, if clearance is tight on all sides, or if your budget is already stretched at double size. In that case, a quality double ottoman is a genuinely excellent bed that provides outstanding storage and comfortable sleeping space without compromise.
Common Sizing Mistakes to Avoid
Not measuring the room before ordering is the most common and most avoidable mistake. Measure everything before you look at a single product listing.
Choosing based on what the mattress fits rather than what the room fits is equally common. The ottoman base needs clearance to open, and that clearance extends beyond the mattress footprint.
Forgetting the opening clearance is particularly problematic for ottoman beds. A standard bed frame only needs walking clearance. An ottoman base needs additional room for the mattress to lift. This is the unique sizing requirement that catches buyers out.
Assuming a double is always big enough for two people is a mistake that sleepers realize relatively quickly. If your budget and room allow a king size, it is almost always the better long-term choice for couples.
Ordering a super king for a room that fits a king size comfortably is also worth avoiding. A super king ottoman in a room sized for a king creates awkward clearances that make both opening the bed and using the room less comfortable than it should be.
Conclusion: Know Your Size, Buy With Confidence
Ottoman beds are one of the most practical bedroom investments available for UK homes. The storage capacity alone justifies the purchase for most buyers, and the sleeping comfort, the clean modern look, and the long-term durability make the case even stronger.
The size you choose shapes all of that. Get the size right and every day in that bedroom is better. Get it wrong and you are either sleeping in less comfort than you could be, or fighting a bed that does not quite fit the room.
The ottoman bed king size is the right choice for most UK couples with adequate room dimensions. The small double ottoman is the smartest pick for compact bedrooms where people consistently underestimate their options. And the double ottoman sits in a sweet spot that works for a wide range of bedrooms and budgets.
Measure your room. Check your clearances. Choose the size that genuinely fits. Then buy with confidence.
Ready to find your perfect size? Browse our full range of ottoman beds at Appex Beds including every size from single to super king, in a range of premium upholstered fabrics, with free UK mainland delivery on every order.
Frequently Asked Questions
What size is a king size ottoman bed in the UK?
An ottoman bed king size in the UK measures 150cm wide by 200cm long. This is the standard king size measurement used across UK bed manufacturers. The mattress is 15cm wider than a double (135cm) and 10cm longer than double and small double sizes (190cm). For comfortable room use, a king size ottoman needs a minimum room size of approximately 3.5m by 4.2m, with additional clearance for the ottoman base to open.
What is the difference between a double and small double ottoman bed?
A double ottoman bed measures 135cm wide by 190cm long. A small double ottoman bed measures 120cm wide by 190cm long. The difference is 15cm of sleeping width. In storage terms, a double ottoman typically provides 590 to 790 litres versus 520 to 680 litres for a small double. The small double is a better fit for more compact rooms, guest bedrooms, and single adults wanting more space than a 90cm single provides. The double is better for couples as a primary sleeping arrangement.
What is the biggest ottoman bed size available in the UK?
The largest standard ottoman bed size in the UK is the super king, measuring 180cm wide by 200cm long. It provides approximately 970 to 1,300 litres of under-bed storage, depending on the base depth of the specific model. A super king ottoman requires a minimum room size of approximately 4.0m by 5.0m and is best suited to genuinely large master bedrooms where its footprint can be comfortably accommodated with adequate clearance on all sides.
Is an ottoman bed king size worth the upgrade from double?
For most couples, yes. The ottoman bed king size offers 15cm more sleeping width, a 10cm longer mattress, and approximately 100 to 200 more litres of storage capacity compared to a double ottoman. For two people sharing the same bed every night for years, that additional width makes a meaningful difference to comfort. The upgrade cost is relatively modest compared to the long-term benefit, and if your room comfortably fits the king size dimensions, it is almost always the better investment.
How much storage does each ottoman bed size hold?
Storage capacity increases with bed size. A single ottoman holds approximately 340 to 450 litres. A small double holds 520 to 680 litres. A double holds 590 to 790 litres. An ottoman bed king size holds 700 to 1,000 litres. A super king holds 970 to 1,300 litres. These ranges reflect variation in internal base depth between different models. Deeper bases at the higher end of each range accommodate larger items, including full-size check-in suitcases in king and super king sizes.