Mattress size guide

Mattresses seem to come in every shape and size, so where should you start?

Buying a new mattresses can be unnecessarily confusing. Every retailer seems to have their own standard mattress sizes and when you throw in that different countries call the same mattress by different names, it’s enough for anyone to lose sleep over.

That’s where we come in.

We’ve put together a guide to help you find the right mattress for you and we’ve started by explaining the different mattress sizes available in the UK.

Below you will find the seven standard mattress sizes available in the UK: single, small double, double, king, super king, cot and cot bed and their standard size measurements.

UK Mattress Sizes


What size mattress do I need?

The size of mattress you need will depend on your circumstances. How many people will be sleeping in the bed? How tall are those people? How much space do you have in your bedroom? Below you’ll find the different mattress sizes and who each one is best suited to.

Single

  • Suitable for children and teens who don’t need much space
  • A great space saver, single beds can also be suitable guest beds

Small Double

  • Suitable for bigger teens who need more space to stretch
  • Suitable for one adult sleeping alone
  • Suitable for young couples with limited bedroom space

Double

  • This is a classic size for average sized couples with average sized bedrooms
  • As a popular size choice there are also a lot of bed frame options to fit double mattresses

King

  • Perfect for couples with a little extra space in the bedroom
  • Suitable for especially tall or large people or couples who like lots of space to move in their sleep

Super King

  • Ideal for those with very large bedrooms
  • Perfect for people who require a lot of space to move around in their sleep
  • Great for large families as there’s room for everyone on a Sunday morning

Cot and Cot Bed Mattresses

  • Perfect for babies anywhere from 0-3 years old
  • Cot bed sized mattresses are specific to cot bed frames that have the ability to change into single beds as the child gets older

Tips for testing the size of your mattress:

Width: Lie on your back with your hands behind your head and your elbows sticking out sideways. Your elbows should not touch the edge of the bed or your partner.

Length: The mattress should be 10cm longer than the tallest person who will sleep on it


Where should I buy my new mattresses?

Bensons for Beds logo
eve mattress logo
Tweak Slumber logo
Marks and Spencer logo
Argos logo
Wayfair logo
Debenhams logo
Choice Furniture Superstore logo
Co-op Beds logo
B and Q Logo

How do UK mattress sizes compare to Europe and the USA?

ContentUK dimensionsEuropean DimensionsUS Dimensions
Single Mattress90cm x 190cm90cm x 200cm97cm x 191cm
Small Double Mattress120cm x 190cm120cm x 200cm122cm x 191cm
Double Mattress135cm x 190cm140cm x 200cm137cm x 191cm
King Mattress150cm x 200cm160cm x 200cm193cm x 203cm
Super King Mattress180cm x 200cm180cm x 200cm203cm x 249cm

Deals and discounts for buying your new mattress online:

Very.co.ukVery.co.uk
Top deal!

40% off selected Home & Furniture

Shop Very now and save up to 40% on home and furniture. Choose from over 150 home and furniture brands you'll absolutely love. T&Cs apply.

Last verified

Get deal
Top deal!
Very.co.ukVery.co.uk

Save £75 on selected iPhone 12 and 12 mini

Take your tech to the next level with a new iPhone 12 from Very and save up to £75 off your purchase! T&Cs apply.

Last verified

Deal ends

Very.co.ukVery.co.uk

Up to 30% off selected Electricals

Get amazing deals on selected Electricals! Shop now at Very and enjoy up to 30% off Samsung Smart TVs, Beats earphones and more! T&Cs apply.

Last verified

Deal ends

Eve SleepEve Sleep

20% off orders over £500

Spend £500 or more at Eve Sleep and use this promo code at the checkout to get 20% off! T&Cs apply.

Last verified

Discount code ends

WayfairWayfair
Clearpay!

Buy furniture now, pay later with Clearpay!

Ready to invest in some new furniture? Shop now and pay later with Wayfair and Clearpay. T&Cs apply.

Last verified

Get deal
Clearpay!
WayfairWayfair
Klarna!

Buy furniture now, pay later with Klarna!

Update your home with the latest furniture styles and pay later with payment service Klarna! T&Cs apply.

Last verified

Get deal
Klarna!
Bensons for BedsBensons for Beds
Top deal!

Get £25 off £500 spend with Bensons for Beds

Turn your bedroom into a sleep sanctuary with a brand-new bed from Bensons for Beds. Choose from a variety of styles, materials and sizes and get the right bed for you at Bensons! T&Cs apply.

Last verified

Top deal!

Discount code ends

Eve SleepEve Sleep

Get the Lighter Mattress from £279

Shop Eve Mattress' brand new, lighter version of their famous mattress! Made with just the right pressure relief, comfort and breathability. It’s heavy on quality, but lighter on price. T&Cs apply.

Last verified

Eve SleepEve Sleep

Eve pillows from £39

In two minds about the pillow for you? Don’t be. Eve is there to help you find the one that floats your boat and you will have 14 nights to make up your mind. Prices starting from as little as £39! T&Cs apply

Last verified

ArgosArgos
Sale!

Argos top tech deals: save up to £150 now

A selection of great gadgets is there to take at Argos at amazing prices, from TVs to hair dryers and gaming consoles! T&Cs apply.

Last verified

Sale!
ArgosArgos
Popular

Folding treadmills from just £99!

Get a compact folding treadmill perfect for any space from Argos! T&Cs apply.

Last verified

Get deal
Popular
ArgosArgos
Exercise Bikes!

Exercise bikes from £79.99

Stay active in the comfort of your own home with home gym equipment from just £79.99 at Argos! T&Cs apply.

Last verified

Get deal
Exercise Bikes!
ArgosArgos
Stay active!

Work hard at home with Argos

Everything you need to train at home and in the gym. Whether cardio's on the cards, you're on a muscle-building mission or just looking to begin some basic exercise, find all the kit you'll need! T&Cs apply.

Last verified

Get deal
Stay active!
WayfairWayfair

Save up to 70% on selected homeware and furnishings

Pick up some bargains among Wayfair's millions of products. T&Cs apply.

Last verified

Very.co.ukVery.co.uk

Up to 25% off Selected Wallpaper

Give your decor a stylish update with our fab range of wallpaper here at Very. Browse through the very latest designs from top-of-the-range names like Graham & Brown and Arthouse. T&Cs apply.

Last verified

Deal ends

Very.co.ukVery.co.uk

Garden deals: up to 30% off!

Shop the latest garden offers at Very and enjoy great savings of up to 30% off garden furniture, BBQs and many more. T&Cs apply.

Last verified

Deal ends

Very.co.ukVery.co.uk
Huge

Huge £900 off selected TV's

We all love settling down on the settee for a film with family and friends – and getting a fab TV deal makes the experience even better. Shop Very's deals now and save up to £900 off tons of 4K UHD TVs! T&Cs apply.

Last verified

Get deal
Huge
Very.co.ukVery.co.uk

30% off selected Living & Dining

No better time to update the Living room than now! Shop Very's deals to save up to 30% off selected Living & Dining. T&Cs apply.

Last verified

Deal ends

Very.co.ukVery.co.uk
Beauty

Huge beauty savings: Get up to 50% off

Shop at Very and get up to 50% off selected electrical beauty products. Check out the beauty edit with big brands like Boss, Philips, BaByliss, Calvin Klein and more! T&Cs apply.

Last verified

Get deal
Beauty
Very.co.ukVery.co.uk

Up to 50% off selected Sportswear

Whatever your goal, from pushing yourself harder at the gym, or making your mark on street styling - we have you covered with the latest launches from Nike, adidas, Vans and more! T&Cs apply.

Last verified

Very.co.ukVery.co.uk
Skincare!

Save 25% on Sanctuary Spa

Refresh your skincare routine and enjoy 25% on Sanctuary Spa! T&Cs apply.

Last verified

Get deal
Skincare!

Deal ends

Very.co.ukVery.co.uk

Up to 50% off branded fashion at Very

For a limited time only shop branded Womens, Mens and Childrens fashion at Very and save up to 50%! Grab a bargain today. T&Cs apply.

Last verified

Very.co.ukVery.co.uk
Gifts!

Up to 40% off selected Jewellery & Watches

Find the ideal gift for your special someone! Shop jewellery and watches from Very and get up to 40% off. T&Cs apply.

Last verified

Get deal
Gifts!
Very.co.ukVery.co.uk

Save up to 50% off selected Sofas & Chairs

Time to update your living room with something new? Shop at Very now to enjoy a little extra off your order with this up to 50% selected sofas and chairs offer! T&Cs apply.

Last verified

Deal ends

Very.co.ukVery.co.uk
Save big!

Up to £200 off cameras at Very

Shop cameras from brands including Nikon, GoPro and Sony and get up to £200 off the RRP! T&Cs apply.

Last verified

Get deal
Save big!
Very.co.ukVery.co.uk

Save up to 50% on selected Electrical Beauty

From electric toothbrushes to hair straighteners, explore Very's complete selection of electrical beauty products and save up to 50% off selected Electrical Beauty now! T&Cs apply.

Last verified

Deal ends

Very.co.ukVery.co.uk

Shop Apple AirPods at Very

Looking for the best sound quality? Look no further! Shop Apple AirPods at Very. T&Cs apply.

Last verified

Very.co.ukVery.co.uk

Save up to 20% on selected Home Appliances

Looking for a new fridge, oven, washing machine or other home appliances? Save up to 20% on selected Home Appliances at Very! T&Cs apply.

Last verified

Deal ends

Very.co.ukVery.co.uk

Up to 30% off selected Homewares

Shop homewares at Very and get up to 30% off the RRP! T&Cs apply.

Last verified

Deal ends

Very.co.ukVery.co.uk

Up to £150 off refrigerators!

Give your kitchen some real wow factor with the super stylish range of refrigerators at Very. Find the one to fit your home and save up to £150 off your order today! T&Cs apply.

Last verified

Very.co.ukVery.co.uk
Samsung!

Shop the latest products in the Samsung Galaxy range

Shop the latest products in the Samsung Galaxy range now at Very, includes Samsung Galaxy S21, Galaxy Buds Pro and Galaxy Smart Tag. T&Cs apply.

Last verified

Get deal
Samsung!
Very.co.ukVery.co.uk

Buy a Samsung Sero TV and get a free Samsung S20 mobile phone

The Samsung The Sero 43 inch QLED Auto-Rotation Smart TV is designed for the online generation. Claim a free Samsung Galaxy S20 mobile phone when you buy this TV! T&Cs apply.

Last verified

Deal ends

Very.co.ukVery.co.uk

Shop V by Very face masks from £4

Complete your outfit with fashionable face masks from V by Very with prices starting at just £4. T&Cs apply.

Last verified

Very.co.ukVery.co.uk

Shop home accessories under £30

Make your home your own with Very's cosy and stylish home accessories. Shop for super low pieces under £30 and grab a bargain today! T&Cs apply.

Last verified

Very.co.ukVery.co.uk

Up to £120 off selected iPhones

Order your brand new iPhone XR, XS, 7, 8 and others right now from Very and save up to £120 off your new phone! T&Cs apply.

Last verified

Very.co.ukVery.co.uk

Get up to 50% off selected fragrances

Shop top brand fragrances including Vera Wang, Juicy Couture and Michael Kors and get up to 50% off at Very! T&Cs apply.

Last verified

Very.co.ukVery.co.uk

Clearance: save up to 60%

Grab a bargain when you shop Very's clearance, and save up to 60% now! T&Cs apply.

Last verified

Very.co.ukVery.co.uk

iPad Mini from £399

Shop the iPad Mini (2019) from Very with prices starting at just £399! T&Cs apply.

Last verified

Choice Furniture SuperstoreChoice Furniture Superstore

Up to 50% off in the Choice Furniture Superstore sale

Save up to 50% in the sale at Choice Furniture Superstore, with discounts on hundreds of items including tables, chairs, entertainment units, mirrors and much more. T&Cs apply.

Last verified

Choice Furniture SuperstoreChoice Furniture Superstore

Mattresses from as little as £60!

Buying a new mattress doesn't have to break the bank! Shop Choice Furniture Superstore's range of budget mattresses from as little as £60! T&Cs apply.

Last verified

More guides on Finder

Ask an Expert

You are about to post a question on finder.com:

  • Do not enter personal information (eg. surname, phone number, bank details) as your question will be made public
  • finder.com is a financial comparison and information service, not a bank or product provider
  • We cannot provide you with personal advice or recommendations
  • Your answer might already be waiting – check previous questions below to see if yours has already been asked
Finder.com provides guides and information on a range of products and services. Because our content is not financial advice, we suggest talking with a professional before you make any decision.

By submitting your comment or question, you agree to our Privacy and Cookies Policy and Terms of Use.

Questions and responses on finder.com are not provided, paid for or otherwise endorsed by any bank or brand. These banks and brands are not responsible for ensuring that comments are answered or accurate.
Go to site