What Is Bigger King or Queen Size Bed?

The Short Answer

A king size bed is bigger than a queen size bed. In the UK, a king size bed measures 150cm wide by 200cm long, which converts to roughly 5ft by 6ft 6in. A queen size bed is not a standard UK size at all, but where it is sold here it usually measures 150cm by 200cm as an imported equivalent, while the American queen measures 152cm by 203cm. The confusion arises because the UK and the United States use different naming systems, and a UK king is very close in width to an American queen.

So if you are comparing a UK king against an American queen, the difference is almost nothing: the American queen is about 2cm wider and 3cm longer. If you are comparing a UK king against a UK double, which many people mistakenly call a queen, the king is 15cm wider and 10cm longer. That extra width is what most couples actually notice.

Why the Naming Confusion Exists

British bed sizing grew out of the imperial system and settled on single, small double, double, king and super king. The queen label came from North America, where the ladder runs twin, full, queen, king and California king. When furniture is photographed for international catalogues or when mattress brands sell across borders, the labels get mixed together, and shoppers end up searching for a size that has no formal British standard.

The practical result is that a British bedroom advertised as taking a queen usually means it takes a UK king. If you have inherited bedding described as queen size, check the actual centimetre measurements before you assume it will fit. Two beds can share a name and still differ by several centimetres, and that is enough to leave a fitted sheet straining at the corners.

UK Bed Sizes Compared

It helps to see the full British ladder in one place. A single is 90cm by 190cm. A small double, sometimes called a three quarter, is 120cm by 190cm. A double is 135cm by 190cm. A king is 150cm by 200cm. A super king is 180cm by 200cm. Note that the length increases at king level: kings and super kings are 200cm long, whereas everything below is 190cm.

That extra 10cm of length matters more than people expect. Anyone over about six feet tall will feel the difference immediately, particularly if they sleep on their back with their feet near the footboard. It is one of the strongest arguments for stepping up to a king even in a room where a double would technically fit.

How Much Space Each Size Needs

A bed frame is always slightly larger than the mattress it holds. Headboards, footboards, upholstered side rails and storage mechanisms all add centimetres. As a working rule, allow 10cm to 20cm beyond the mattress dimensions on each relevant side, then add clear walking space.

For a king, aim for a room at least 3m by 3.4m if you want comfortable access on both sides plus space for bedside cabinets. You can fit a king into a smaller room by pushing one side against a wall, but that turns the far side into a climb over, which quickly becomes tiresome for the person sleeping there. In a typical British three bedroom house, the main bedroom will usually take a king. The second bedroom often will not, and that is where a double or small double earns its place.

Measure the route as well as the room. Staircases with tight turns, narrow landings and low door heads defeat many mattresses before they reach the bedroom. Rolled or vacuum packed mattresses solve much of this, and bed frames that arrive flat packed will pass through spaces that an assembled frame never could.

Choosing Between Them for a Real Bedroom

If the room can take it and two adults share the bed, the king is the size worth stretching for. The additional 15cm of width over a double translates to about 7.5cm each, which sounds trivial written down and feels significant in practice, especially for side sleepers who move during the night or anyone sharing with a restless partner.

Where floor space is genuinely tight, a double frame with a slim profile and no footboard will read as less bulky than a king pushed into a corner. Visual weight counts as much as measured width in a small room. A low frame with tapered legs lets light travel under the bed and keeps the floor looking continuous, while a deep divan base with a tall padded headboard can make the same room feel closed in.

Our range of modern king size fabric beds UK sale covers both ends of that spectrum, from low slatted designs to fuller upholstered shapes with deep buttoned headboards. If you prefer timber, the king size wooden beds UK selection tends to sit lower and reads more quietly in a room with patterned walls or a busy floor.

What Changes Beyond the Mattress

Upgrading size affects more than the frame. Duvets, sheets, mattress protectors and valances all follow the mattress dimensions, so a move from double to king means replacing bedding rather than adapting it. Duvet sizing follows its own logic: a king duvet is typically 225cm by 220cm, which is wider than the mattress because the overhang is what stops it being pulled off in the night.

Bedside furniture needs rethinking too. A wider bed pushes cabinets further towards the walls, and in narrow rooms that can mean choosing slimmer units or wall mounted shelves instead. Slim wooden bedside cabinets UK sale in a 40cm to 45cm width usually work where a standard 50cm unit would crowd the walkway.

Storage is the other consideration. A larger bed occupies floor area that might otherwise have held a chest of drawers, so under bed drawers or an ottoman lift base start to look sensible rather than optional. If the wardrobe is already full, a bench or blanket box at the foot of the bed handles the seasonal overflow without adding another tall piece to the room. You can browse the wider bedroom collection at modern bedroom furniture UK sale to see how frames, cabinets and storage pieces work together.

Mattress Depth and Firmness

Two beds of the same size can feel very different depending on mattress depth. A deep pocket sprung mattress raises the sleeping surface, which changes how easy the bed is to get in and out of and how a fitted sheet behaves. If you have chosen a frame with a low headboard, a very deep mattress can leave the headboard looking undersized.

Firmness matters more on a shared bed. Where two people differ significantly in weight, a mattress with zoned support or independently working pockets handles the imbalance better than a single foam core. The wider the bed, the less one person’s movement transfers, which is another quiet advantage of the king over the double.

A Note on Super King

If the room genuinely has space, the super king at 180cm wide is the next step. It suits large main bedrooms and loft conversions where the floor area is generous even if the ceiling slopes. The catch is access: 180cm plus frame plus walkways demands a room around 3.4m by 3.8m to avoid feeling tight, and bedding options narrow slightly at that size. For most British homes the king remains the sensible upper limit, with the super king reserved for rooms that can carry it without compromise.

You will find furniture across every bedroom size in our full range, and we deliver free to most UK mainland postcodes. At Furniture in Fashion we stock frames from single through to super king, so you can compare footprints before committing to a size.

Frequently Asked Questions

Is a queen size bed the same as a UK double?

No. A UK double is 135cm by 190cm, while an American queen is 152cm by 203cm. The queen is considerably larger in both directions, and closer to a UK king than to a UK double.

Will king size bedding fit a queen size mattress?

UK king bedding will usually fit an American queen mattress with a little slack, since the two sizes are within a few centimetres. Fitted sheets are the exception, because the pocket depth and corner tension are cut for a specific size and may not sit neatly.

How much bigger is a king than a double?

A UK king is 15cm wider and 10cm longer than a UK double. That gives each person in a shared bed about 7.5cm more width, plus useful extra length for taller sleepers.

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

Around 3m by 3.4m allows a king frame with walking space on both sides and room for bedside cabinets. Smaller rooms can take a king if one side sits against a wall, though that limits access.

Do king size beds come with storage?

Many do. Ottoman lift bases, side opening frames and under bed drawers are all available at king size, and they recover some of the floor storage the larger footprint takes up.