Mattress Size Guide

MATTRESS SIZE GUIDE 

Bed/Mattress
Super king
King
Double
Small double
Single
Dimensions (Metric)

180 x 200

150 x 200

135 x 190

120 x 190

90 x 190

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

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:

Super King Mattress

What size is a super king bed and mattress?

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.

 

King Size Mattress

What size is a king size bed and mattress?

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.

 

Double Mattress

What size is a double bed and mattress?

A standard double bed and mattress is 135cm wide and 190cm. In imperial dimensions, this is equal to 4 feet 4 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.

 

Small Double Mattress

What size is a small double bed and mattress?

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.

 

Single Mattress

What size is a single bed and mattress?

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

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