Best Super King Ottoman Beds UK: Sizes, Storage & How to Choose

Last updated: August 2026

A super king ottoman bed measures 6ft (180cm) wide by 6ft6 (200cm) long — the largest standard UK bed size. It gives a storage well of 3.60 m², around 40% more than a double and 20% more than a king, and needs the highest-rated gas struts of any size.

Super king ottoman bed dimensions

A UK super king mattress is 180cm x 200cm (6ft x 6ft6). That is 30cm wider than a king and 45cm wider than a double, with the same 200cm length as a king. The frame sits slightly larger again — usually 5–10cm each side — so measure the external frame, not the mattress, and check it will physically fit through your doorways and up the stairs.

How much storage does a super king ottoman bed have?

That is the largest single storage space you can get in a UK bed — enough for spare bedding, suitcases and seasonal items together.

What room size do I need for a super king ottoman bed?

The frame alone occupies roughly 1.8m x 2m. Allow around 70cm of walking space on any side you need to access, which in practice means a room of about 3.2m x 3.4m or larger to use it comfortably. Also confirm vertical clearance — the base lifts to near-vertical, so nothing (window sill, radiator, shelf, sloped ceiling) can sit in the arc.

Do super king ottoman beds need stronger gas struts?

Yes, and this matters most at this size. A super king mattress is the heaviest standard UK mattress, so struts need the highest Newton (N) rating of any size to raise the base. Underrated struts won't hold it open; this is the size where a mismatched strut is most obvious. See our gas strut replacement guide.

What to look for in a super king frame

• Reinforced side rails and cross-supports — the widest frames flex most, so structural reinforcement matters more here than at any other size
• Solid timber construction rather than unsupported board
• Dual struts with the highest matching N rating, printed on the barrel
• Solid platform deck if using a memory foam or hybrid mattress
• Access check — measure doorways, stairwells and turns before ordering
• Permanent fire-safety label, required under the Furniture and Furnishings (Fire) (Safety) Regulations 1988

Frequently asked questions

What are the dimensions of a UK super king bed?

180cm x 200cm, or 6ft x 6ft6. It is 30cm wider than a king size and 45cm wider than a double.

Is a super king too big for a normal bedroom?

In most standard UK bedrooms, yes — you need roughly 3.2m x 3.4m to walk around it comfortably. In a smaller room a king usually leaves far more usable floor space.

What mattress fits a super king ottoman bed?

Any standard UK super king (180cm x 200cm) mattress. Because these are the heaviest mattresses, check the weight against the frame's strut rating carefully.

Will a super king ottoman bed fit up my stairs?

Frames arrive flat-packed in sections rather than assembled, so the limiting factor is the largest single panel, not the finished bed. Check the packaged dimensions before ordering.

Related reading

See our super king buying guide, the full sizes guide and what makes a good ottoman bed. Browse super king ottoman beds.