The quality of a mattress and the material it’s made from are of course important, but its vital you get the size right. Choosing the right bed dimensions and mattress size is one of the most important decisions you can make when updating your bedroom. After all, no one wants to have to send back a mattress because it is too big or small for their bed.
It’s important to remember that bed and mattress sizes can differ between countries. For this reason, this quick guide will give you the lowdown on all the UK mattress sizes and European mattress sizes. 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 Dimensions
& Mattress Sizes
| Bed/Mattress | Super king | King | Double | Small double | Single | Small single | Toddler | Cot |
|---|---|---|---|---|---|---|---|---|
| Dimensions (Cm) | 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 (Feet) | 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 Mattress & Bed Sizes
Before buying a bed, the first of the key consideration you have to make first revolve around its size. 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). What size is a super king bed and mattress?
Super king size bed and mattress measurements
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.
Super king size bed & mattress dimensions: (W x L)
- Feet: 6′ x 6’6″
- Inches: 72″ x 78″
- Centimeters: 180 x 200cm
Ideal for: 2 persons and those who value space.
(2). What size is a king size bed and mattress?
King size bed & mattress measurements
The dimensions of 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.
King size bed & mattress dimensions: (W x L)
- Feet: 5′ x 6’6″
- Inches: 60″ x 78″
- Centimeters: 150 x 200cm
Ideal for: 2 persons and those taller than 190cm.
(3). What size is a double bed and mattress?
Double bed and mattress measurements
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.
Double bed & mattress dimensions: (W x L)
- Feet: 4′6″ x 6’3″
- Inches: 54″ x 75″
- Centimeters: 135 x 190cm
Ideal for: 2 persons and small to average sized bedrooms.
(4). What size is a small double bed and mattress?
Small double bed and mattress measurements
Small double bed & mattress dimensions: (W x L)
- Feet: 4′ x 6’3″
- Inches: 48″ x 75″
- Centimeters: 120 x 190cm
Ideal for: 1 person and small bedrooms.
(5). What size is a single bed and mattress?
Single bed and mattress measurements
The size of 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.
Small double bed & mattress dimensions: (W x L)
- Feet: 3′ x 6’3″
- Inches: 36″ x 75″
- Centimeters: 90 x 190cm
Ideal for: 1 person
(6). What size is a small single bed and mattress?
Small single bed and mattress measurements
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.
Small single bed & mattress dimensions: (W x L)
- Feet: 2’6″ x 6’3″
- Inches: 29.5″ x 75″
- Centimeters: 75 x 190cm
Ideal for: Young kids, small rooms and guest beds.
(7). What size is a toddler bed and mattress?
Toddler bed and mattress measurements
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.
Toddler bed and mattress dimensions: (W x L)
- Feet: 2’3″ x 4’6″
- Centimeters: 70 x 140cm
Ideal for: Toddlers and kids’ character beds.
(8). What size is a cot mattress?
cot mattress measurements
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.
Toddler bed and mattress dimensions: (W x L)
- Inches: 23″ x 47″
- Centimeters: 60 x 120cm
Ideal for: Babies and toddlers who haven’t yet transitioned to a bed.
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). What size is a Euro Single Bed and Mattress?
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.
As a UK retailer, we don’t stock EU beds or mattresses. However, shop our range of similar sized single beds, single mattresses.
(2). What size is a Euro Small Double Bed & Mattress?
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.
At Dreams, we don’t stock EU small doubles. Instead, consider our queen size beds and queen size mattresses which are 120cm wide by 190cm long.
(3). What size is a Euro Double Bed & Mattress?
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.
If you’re looking for a brand‐new bed and mattress, consider UK double instead. Shop our double beds and double mattresses which are just 10cm shorter than their EU counterpart.
(4). What size is a Euro King Size Bed & Mattress?
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.
While we don’t sell EU king size beds and mattresses, we do sell a close equivalent. If you’ve not yet made up your mind, consider our king size beds and /king size mattresses instead.
(5). What size is a Euro Super King Size Bed?
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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