Choosing the right bed and mattress size is one of the most important decisions you can make when updating your bedroom. To help, we’ve put together a comprehensive guide on how to choose the right size bed and mattress. It’s important to remember that bed and mattress sizes can differ between countries. For this reason,we’ve included UK bed sizes and European bed sizes too. It’s also important to check the size of bed frames before buying as these will vary depending on the type of bed. But for standard dimensions, , here are the most accurate UK bed and mattress sizes:
UK Bed and Mattress Sizes
| Bed/Mattress |
Super king
|
King
|
Double
|
Small double
|
Single
|
Small single
|
Toddler
|
Cot
|
|---|---|---|---|---|---|---|---|---|
| Dimensions (Metric) |
180 x 200 |
150 x 200 |
135 x 190 |
120 x 190 |
90 x 190 |
75 x 190 |
70 x 140 |
60 x 120 |
| Dimensions (Imperial) |
6’0″ x 6’6″ |
5’0″ x 6’6″ |
4’6″ x 6’3″ |
4’0″ x 6’3″ |
3’0″ x 6’3″ |
2’6″ x 6’3″ |
2’3″ x 4’6″ |
23″ x 47″ |
Standard UK Bed and Mattress Sizes
It’s important to make sure the length and width of your mattress matches your bed frame. It’s also necessary to make sure the size you choose matches your room and how many people it’s catering for. To help, check out our comprehensive guide below to UK bed and mattress sizes:
(1) Super king bed and mattress size
Standard super king beds and mattresses are 180cm wide and 200cm long. In imperial dimensions, this equals 6 feet in width and 6 feet 6 inches in length. As the largest bed and mattress size available, they provide an unbeatable amount of space. If your family all like to squeeze in together on Sunday mornings or you just value a lot of space, super king is the ideal choice.
- Best for: 2 persons and those who value space.
Super King Mattresses are the largest mattress size available, measuring 6 feet in width and 6 feet 6 inches in length. With a super king mattress, you get a wide choice of advanced sleep technologies as well as a luxurious amount of space for sleep.
(2) King size bed and mattress size
In metric dimensions, a standard king size bed and mattress is 150cm wide and 200cm long. This is equal to 5 feet wide and 6 feet 6 inches long in imperial measurements. King size beds are longer than doubles, making them perfect for taller people who need extra leg room.
- Best for: 2 persons and those taller than 190cm.
A king size mattress measures 5 feet wide and 6 feet 6 inches long, making it the second largest mattress size available. Coming in a variety of styles from traditional spring to memory foam, there are plenty of king size mattresses to choose from.
(3) Double bed and mattress size
A standard double bed and mattress is 135cm wide and 190cm. In imperial dimensions, this is equal to 4 feet 6 inches wide and 6 feet 3 inches long. As the most common size for a bed and mattress, they’re ideal for two people, especially when bedroom space is at a premium.
- Best for: 2 persons and small to average sized bedrooms.
Double mattresses measure 4 foot 6 inches in width and come in a range of styles and designs. From simple Traditional Spring to advanced options such as Memory Foam and ActiGel, the range of double mattresses will help you get the perfect night’s sleep.
(4) Small double bed and mattress size
In metric dimensions, a small double bed and mattress is 120cm wide and 190cm long. This is equal to 4 feet wide and 6 feet 3 inches long. They’re most suited to one person but can accommodate two adults if necessary. If your bedroom is smaller than average, small doubles are ideal, especially if you choose a divan or ottoman base which maximises storage.
- Best for: 1 person and small bedrooms.
Small double mattresses, also known as queen size mattresses, measure 4 feet wide and 6 feet 3 inches long. Whether your needs are budget, comfort level, or health requirements, the range of queen size mattresses will have something for you.
(5) Single bed and mattress size
A single bed and mattress is 90cm wide and 190cm long. In imperial dimensions, this is equal to 3 feet wide and 6 feet 3 inches long. As the name suggests, they are ideal for one person. They’re also great for children as they account for all growth spurts from toddler right through to teen.
- Best for: 1 person
A single mattress measures 3 feet wide and 6 feet 3 inches long. From simple, traditional spring to advanced alternatives like ActiGel and memory foam, range of single mattresses has something for everyone.
(6) Small single bed and mattress size
Small single bed and mattresses are 75cm wide and 190cm long. In imperial dimensions, this is equal to 2 feet 6 inches wide and 6 feet 3 inches long. Small singles are designed to fit narrower kids’ bed frames and guest beds. They are ideal for saving space and for spare rooms.
- Best for: Young kids, small rooms and guest beds.
Measuring 2 feet 6 inches wide, small single mattresses come in a range of different types and comfort levels.
(7) Toddler bed and mattress size
A standard toddler bed and mattress is 70cm wide and 140cm long. In imperial dimensions, this is equal to 2 feet 3 inches wide and 4 feet 6 inches long. They are ideal for kids aged between one and three, especially those who need a little help changing from a cot to a single bed.
- Best for: Toddlers and kids’ character beds.
Sleep is one of the biggest factor’s in a child’s development, so it’s important to find the perfect mattress for your little one. Choosing a toddler bed and mattress can make the transition from a cot to a bed much easier – great for both you and your toddler!
(8) Cot mattress size
A standard cot mattress is 60cm wide and 120 cm long. In imperial measurements, this is equal to 23 inches wide by 47 inches long. As the name suggests, these mattresses are used for babies who sleep in a cot. They’re usually 10cm deep and are firmer than adult mattresses. This helps your babies development, ensuring they are aligned during sleep, helping them grow properly.
- Best for: Babies and toddlers who haven’t yet transitioned to a bed.
Finding the right cot mattress can have a major impact on the quality of your child’s sleep. This means better growth and development, but also a better quality of sleep for you too! Browse our range of cot mattresses now and make sure your little one is getting all the support they need.
Mattress Size Vs. Bed Frame Size
When buying a new bed, you’ll want to ensure it fits in your room comfortably. Therefore, it’s worth knowing which types of beds and bed frames tend to have larger dimensions.
Your mattress size should always correspond with the bed size you buy. For example, if you have a double bed frame, you should get a double mattress. While a double mattress measures 190 x 135cm, it’s impossible to give an exact double bed size. This is because each style will vary, and some designs have headboards and footboards adding to the overall size of the bed. Kids beds have a recommended mattress size to fit the bed frame, whether that be toddler, single or euro single.
Bed frame size according to style
The dimensions of your bed will differ depending on which style of bed frame you choose:
- Divan beds without a headboard will have the same dimensions as your mattress as it will sit flush on top of the divan base.
- Wooden bed frames are usually a few centimetres bigger than your mattress around each side.
- Upholstered bed frame dimensions differ hugely depending on whether they have a sleigh shape, the amount of detail and the fabric.
Always check the dimensions of the bed before purchasing to ensure it fits in the room with enough space to move around the sides.
Euro Bed and Mattress Sizes
| BED / MATTRESS SIZE | EURO SINGLE (TWIN) | EURO SMALL DOUBLE | EURO DOUBLE | EURO KING | EURO SUPER KING |
|---|---|---|---|---|---|
| Width x Length (Metric) | 90 x 200 | 120 x 200 | 140 x 200 | 160 x 200 | 180 x 200 |
| Width x Length (Imperial) | 3’0” x 6’6” | 4’0” x 6’6” | 4’7” x 6’6” | 5’3” x 6’6” | 6’0” x 6’6” |
(1) Euro Single Bed and Mattress Size
A standard European single bed, often known as a twin bed, is 90cm wide and 200cm long. This is equal to 3 feet wide and 6 feet 6 inches long. This means twin beds and mattresses are a little longer than their UK counterparts but the same width.
(2) Euro Small Double Bed & Mattress Size
A European small double bed and mattress is 120cm wide and 200cm long. This is equal to 4 feet 0 inches by 6 feet 6 inches long. Like their UK equivalent, they’re ideal for couples who have small bedrooms, teenagers, and those who want more sleeping space than a single bed offers.
(3) Euro Double Bed & Mattress Size
A European double bed and mattress is 140cm wide and 200cm long. This is equal to 4 feet 7 inches wide and 6 feet 6 inches long. They’re the most common EU bed size, offering plenty of sleeping space without taking up too much room.
(4) Euro King Size Bed & Mattress Size
A European king size is bed 160cm wide and 200cm long. This is equal to 4 feet 7 inches wide and 6 feet 6 inches long. This makes Euro king size, a little wider than its UK equivalent. If you have the space, they offer a luxurious amount of space in which to sleep – ideal for couples who need extra room to sleep.
(5) Euro Super King Size Bed Size
A Euro super king bed is 180cm long and 200cm wide. In imperial measurements, this is equal to 6 feet 0 inches wide and 6 feet 6 inches long. This makes them the same size as UK super kings which provide the largest sleep space available of all beds. This makes them perfect for couples who need maximum space and comfort.
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