February 2022

Bed Sizes UK: Bed & Mattress Size Guides

Did you know the most popular UK mattress size is a king size? It can be tricky to work out what mattress size will fit. It's sometimes important to check exactly how big and heavy a mattress is. Especially if you're wanting to squeeze a slightly larger mattress into your bedroom. After all who doesn't want a bigger bed? We detail all about mattress sizes to get the best bed for your bedroom.

Updated 2022: We’ve gathered all the UK mattress and bed sizes here to help you shopping online for a new mattress. This article will help you find the right mattress size for your bedroom whether you are looking to supersize your mattress or find a bed to fit that tiny box room!

A luxury Artisan 1500 mattress in a room
Kingsize mattresses are the most popular UK size.

We explain all about mattress sizes and the weights that will help you choose a new mattress. If you’re looking for guidance on mattress bases there’s a handy article here with explains everything about suitable mattress sizes and bases.

How to choose the right bed size

Finding the right sized mattress can be confusing and in our experience, most people who don’t check in advance what bed will fit either end up with a bed that’s too small or won’t fit up the stairs. This is where our mattress size guide can help.

It’s also important to check the weight of your new mattress, all our own bed bases can accommodate any of our models some other retailer mattress bases may have an upper weight limit. If you’re asking ‘what size is a mattress?’ then read on for more help.

A deco bed frame by john ryan

Bed & Mattress Sizes UK

The following are the standard UK mattress and be sizes that we make our mattresses and bed bases in. Bespoke orders and bespoke size mattresses are available upon request so please get in touch.

Bed and mattress sizes UK

The table below shows all the Bed sizes in the UK.

Bed & Mattress Sizes UKMetric Dimensions Imperial Dimensions
Small Single 80cm x 190cm2’ 6” x 6’3”
Single 90cm x 190cm3′ x 6’3″
Small Double 120cm x 190cm4″ x 6’3
Double 135cm x 190cm4’6″ x 6’3″
Continental Double 140cm x 200cm4’7” x 6’6”
King 150cm x 200cm5′ x 6’6″
Continental King 160cm x 200cm5’3″ x 6’6″
Extra King 180cm x 190cm6’0 x 6’3
Super King 180cm x 200cm6′ x 6’6″
*All furniture dimensions are covered by a tolerance of up to 2cm.

What is the most popular bed size?

The most popular UK bed size is now a King size mattress having finally overtaken the double bed. This has been made far more accessible for most with zip and link mattresses.

Zip & link beds mean that even smaller houses with difficult access or tight stairwells can now accommodate a kingsize mattress. These split piece beds allow even super king-sized mattresses to fit into the tightest of loft rooms.

The UK's most popular size is now a King size
The UK's most popular size is now a King size
It's important to check you have enough access to fit a larger bed
It's important to check you have enough access to fit a larger bed

What size is a small single bed and mattress?

The size of a small single mattress is 80cm x 190cm / 2’ 6” x 6’3”.

Small Single bed and mattress sizes UK

What size is a single bed and mattress?

The size of a single mattress is 90cm x 190cm / 3” x 6’3”.

Single bed and mattress sizes UK

What size is a small double bed and mattress?

The size of a small double mattress is 120cm x 190cm / 4″ x 6’3″.

Small double bed and mattress sizes UK

What size is a double bed and mattress?

The size of a double mattress is 135cm x 190cm / 4’6″ x 6’3″.

Double bed and mattress sizes UK

What size is a King size bed and mattress?

The size of a Kingsize mattress is 150cm x 200cm / 5′ x 6’6″.

King size bed and mattress sizes UK

What size is a Super king size bed and mattress?

The size of a Super King size mattress is 180cm x 200cm / 6′ x 6’6″.

Super King size bed and mattress sizes UK

What size is an Extra king size bed and mattress?

The size of an Extra King size mattress is 180cm x 190cm / 6’0 x 6’3.

Extra king mattress and bed sizes UK

Is a larger mattress better for sleep?

A larger mattress can help you sleep better as they allow for less sleep disturbance if you share a bed. Sharing a smaller mattress such as a double can sometimes lead to nightly disruptions from your other half as they move about in bed. With a larger mattress such as a king size or super kingsize mattress there’s more free space on the mattress so you’re not as close together.

Side sleeper in black and white

When a pocket sprung mattress is chosen this can help drastically reduce nocturnal interruptions as each pocket spring works individually reducing transference (that bounce or movement across a mattress).

This means that when one sleeper moves there’s less chance of you being woken up at night.

Zip & Link mattress sizes

Zip & link mattresses are two mattresses that seamlessly zip together offering ultimate sleep flexibility and customisation.

Zip and link beds are ideal for differently weighted sleepers or if you want to be able to divide the bed periodically. Zip and links also make turning your mattress far easier.

A zip and link mattress being zipped

Zip & link mattresses offer a number of benefits including split tension spring units if you and your partner require different tensions in your bed. The zips are recessed so you won’t feel them and it makes turning your mattress far easier each month. We have a very handy guide below to explain exactly how zip and link mattresses work which may be of interest.

What mattress & bed sizes are best?

There are a number of mattress size conventions across the world. This post will detail all the UK sizes including mattress bases so you can see which bed will fit in your bedroom. The UK’s most popular mattress size is a king size which allows ample space for two people sleeping next to each other when compared to the snug fit of a double.

Did you also know that if you’ve got restricted access, narrow staircases or low ceilings then you can get your mattress made as a zip & link model enabling practically any sized house to have the ultimate dream mattress!

The best mattress size is usually the largest bed you can comfortably fit into your bedroom.

A king-size mattress for 2 people affords you a generous space regardless of your sleeping position without making the mattress impossible to turn. Larger sizes are usually better as a zip and link mattress which we stock in all our ranges. Kingsize mattresses are the most popular in the UK.

We also offer a bespoke mattress making service so if you’ve got an unusual size requirement we can accommodate that too! Why not get in touch for the ultimate hand made mattress just for you!

John Ryan Legacy mattress and Base with throw
Why not move up a size for ultimate comfort in bed? Click to view mattresses for any room size.

Continental & European Bed Sizes

Bed & Mattress Sizes EuropeanMetric Dimensions Imperial Dimensions
Continental/European Single/Twin90cm x 200cm3’0” x 6’6”
Continental/European Small Double 120cm x 200cm4’0” x 6’6”
Continental/European Double 140cm x 200cm4’7” x 6’6”
Continental/European King 160cm x 200cm5’3″ x 6’6″
Continental/European Super King (Same as UK) 180cm x 200cm6’0” x 6’6”

Mattress depths

Our Origins range are 12-13 inches deep, 30-33cm and the Artisan range are 11-12 inches deep 27-30cm. The Fusion, Hybrid and Resilience depths are all stated on their respective product listings.

Mattress SizeOrigins ComfortOrigins ReflexOrigins 1500Origins Latex 1500


Mattress SizeArtisan 1500Artisan Tailored PocketArtisan NaturalsArtisan Latex


Mattress SizeArtisan Bespoke 004Artisan LuxuryArtisan BespokeArtisan Bespoke 002


Hybrid / Resilience Range   
Mattress SizeMattresses5cm Topper7.5cm Topper
Single 16-18kg6-8kg8-10kg
Double 24-26kg10-12kg12-14kg
King 30-32kg11-13kg15-17kg
Superking 35-37kg13-15kg16-18kg


Fusion Range   
Mattress SizeMattresses5cm Topper7.5cm Topper
Single 25-27kg12-14kg14-16kg
Double 35-38kg20-24kg24-28kg
King 40-45kg22-26kg26-30kg
Superking 45-50kg26-32kg32-38kg


Mattress SizeArtisan Bespoke 003Artisan SublimeThe Legacy

Mattress Size Guide Approximations

Please be aware that unlike other manufacturers we don’t class the mattress cover in the overall mattress depth.  Other companies will add 1-3cm to the overall depth of the mattress using the cover and quilt undulations as part of the foam which we find misleading.

We don’t think this is a fair practice, so we don’t count this 1-3cm in the overall depth of the mattress. Please be aware when choosing your mattress it may be slightly deeper than listed due to the cover and undulations.

We advise you to wait until your mattress arrives before purchasing additional covers and sheets to make sure they fit. It will also take upto 4 weeks for you to adjust and get used to your new mattress, a bit like a new pair of shoes. So please bear this in mind.

Front sleeper mattress advice

Bed Base Sizes

How big are mattress bases? Check out our dimension table to assist.

Base SizeDimensions
Small Single 2’ 6” x 6’3” (80cm x 190cm)
Single 3′ x 6’3″ (90cm x 190cm)
Small Double 4″ x 6’3 (120cm x 190cm)
Double 4’6″ x 6’3″ (135cm x 190cm)
Continental Double 4’7” x 6’6” (140cm x 200cm)
King 5′ x 6’6″ (150cm x 200cm)
Continental King 5’3″ x 6’6″ (160cm x 200cm)
Extra King 6’0 x 6’3 (182cm x 190cm)
Super King 6′ x 6’6″ (180cm x 200cm)
*These dimensions are covered by a tolerance of up to 2cm. Bases are usually slightly wider and longer than their counterpart mattress.

Mattress Size Vs the Bed Frame Size

When choosing a new mattress you also need to consider the mattress base that it will sit on. In particular, if it will fit into both your bedroom and also up the stairs!

Your mattress size should always correspond with the bed size you are also buying. If you have a king-size bed (like most of the UK) then you will need a kingsize mattress. However, each bed frame type may be slightly larger than the mattress depending on the design which you need to take into consideration.

Bed frame sizes dependant on style

The dimensions of your bed will vary depending on which style of bed frame or bed base you choose:

  • Divan beds should be the exact same dimensions as your mattress so they sit flush
  • Metal bedframes may be up to 2cm wider to accommodate the mattress in the lip
  • Wooden bed frames are also a couple of centimetres bigger than your mattress around each side again sitting within the frame
  • Sleigh beds, upholstered bases, antique and custom made bed bases can have really different proportions and dimensions so always triple check!
A metal slatted bed frame
Always check metal, wooden, antique or custom bed bases as these can be up to 2cm bigger than your chosen mattress size.

Mattress bases drawer dimensions

People often ask how big are mattress drawers and the depths of them. It’s important to know what you could fit in them as mattress base drawers can offer hidden storage for smaller bedrooms. Here is a guide for our John Ryan Mattress bases.

Base TypeDepth of BaseDrawer Dimensions / Internal depth
Platform Top12"32″ wide, 20″ deep and 9″ high (Continental drawers 17.5" wide)
Ottoman15"10" internal depth storage
Artisan Sprung (no drawers12"NA
Artisan Sprung (with drawers)12"32″ wide, 20″ deep and 9″ high (Continental drawers 17.5" wide)

Legacy Mattress Sizes

Legacy Mattress SizeDimensionsWeight
Single 3′ x 6’3″ (90cm x 190cm)46kg
Double 4’6″ x 6’3″ (135cm x 190cm)62kg
King 5′ x 6’6″ (150cm x 200cm)72kg
Extra King 6’0 x 6’3 (182cm x 190cm)72kg
Super King 6′ x 6’6″ (180cm x 200cm)82kg

Which way are divan bases split?

Weights of Mattresses

Our mattresses weigh between 23-78kg depending on mattress model and size.

This is an approximate guide for the weight of our Mattresses. Please be aware there is a sometimes a variance and we can’t guarantee an exact weight for the mattresses this is why we sometimes give a range. You need to know the weight of the mattress to check that you base can support it.

Cheap mattresses may weigh as little as 20kg for a king-size whereas a hand made mattress full of Natural mattress fillings can weight up to 80kg! 

Under our Bespoke Service

We can make mattresses to a number of non-standard sizes. Especially if you have antique bed frames, require beds for yachts or any other bespoke mattress requirements. There is a price increase for bespoke work and it’s not covered by the love it or return it guarantee. Please get in touch for more details with us directly.

  • Ikea Double 4’7” x 6’6”  (140cm x 200cm)
  • Ikea King  5’2″ x 6’6″ (160cm x 200cm)

European / Ikea sizes are usually slightly longer and wider than standard UK bed equivalents.  At present at John Ryan we don’t offer an Ikea Single equivalent as this is 6’6″ inches long where as a small single is 6’3″.  Our bespoke service can take orders of non-standard services such as this.

Bespoke Mattress Sizes that can be custom orderedFeet & InchesCentimeters
2ft9 x 6ft291cm x 190cm
3ft x 6ft690cm x 200cm
4ft x 6ft6120cm x 200cm
4ft8 x 6ft3146cm x 192cm
5ft3 x 6ft6
160cm x 202cm
5ft5 x 6ft5170cm x 200cm
5ft5 x 6ft5183cm x 199cm
6ft x 6ft5180cm x 198cm
6ft x 7ft4184cm x 228cm
6ft3 x 6ft6193cm x 203cm
6ft6 x 6ft6200cm x 200cm
6ft6 x 6ft6220cm x 200cm
Bespoke Headboard Sizes can be custom made
40" in total height 20" x 20"
44" in total height 24" x 20"
Bespoke Bed Base sizes can be custom madeCan be made to measure please get in touch

We always recommend getting the biggest bed for the size of your room as this allows you the most freedom to sleep during the night. With smaller beds, you may find your partner disturbs you during the night.

Zip & link models make an excellent choice for restricted access and offer completely customized spring tensions for each sleeper. They allow you the freedom of having a larger mattress size without worrying about it getting stuck up the stairs or not bending around a tight corner!

Do you need a different size or shape altogether? If so then please get in touch and we can provide expert advice and guidance through our bespoke service.

We have plenty of experience in making bespoke mattresses for antique bed frames, houseboats, caravans, motorhomes and other bespoke sleeping arrangements.

Don't you deserve a mattress tailored just for you?
Our small friendly team can help you choose a mattress specifically tailored to your needs. With our 60 Day Love it or Return it Guarantee its completely risk-free.

We’re here to help

  • We are the mattress experts! Ask us anything about any mattress by any manufacturer for honest advice and support.

We are here to help
Want to see what mattress will fit in your bedroom? Get in touch!
0161 437 4419
See why we are the most trusted bed retailer
Based on 2000+ reviews Trustpilot

Ask us a question.

There are over 6000 questions and answers submitted by you on all questions about mattresses and bed problems. Enter a keyword such as Vi Spring, John Lewis beds, bad back or Memory Foam and see if your question has already been answered.

You can filter popular questions by the categories below. If you can’t find an answer, ask a new question below. We aim to respond to all questions within one working day.

Ask a question
Start typing your question below:
John Lewis and Staples Mattresses Reviewed
132563 views 2 answers arrow
Simba mattress and Eve rave reviews?
63051 views 1 answer arrow
Are sprung slats better than rigid slats?
41976 views 2 answers arrow
Problems with I-Gel mattress from Bensons
33925 views 2 answers arrow
No results
Load More Questions