Bed and Mattress Size Guide

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″

 

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.

Shop our 6’0 Super King Mattress range

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.

Shop our 5’0 King Mattress range

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 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.

Shop our 4’6 Double Mattress range

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.

Shop our 4’0 Small Double Mattress range

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
Shop our 3’0 Single Mattress range

What size is a toddler bed and mattress?

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.
Shop our Toddler Mattress range

What size is a cot mattress?

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.
Shop our cot mattress range