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The Bed and Mattress Size Guide

The Mattress Size Guide

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. 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:

Will it fit? Measuring your property

UK Bed and Mattress Size Guide
Mattress Size (W x L)
Super king

6'0 x 6'6

180 x 200

King

5'0 x 6'6

150 x 200

Double

4'6 x 6'3

135 x 190

Small double (Queen)

4'0 x 6'3

120 x 190

Single

3'0 x 6'3

90 x 190

Euro single

3'0 x 6'6

90 x 200

Small single

2'6 x 6'3

75 x 190

Toddler

2'3 x 4'6

70 x 140

Mattress
Super king
King
Double
Small double (Queen)
Single
Euro single
Small single
Toddler
Size (cm) W x L

180 x 200

150 x 200

135 x 190

120 x 190

90 x 190

90 x 200

75 x 190

70 x 140

Size (feet) W x L

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

3'0 x 6'6

2'6 x 6'3

2'3 x 4'6

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:

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 euro single bed and mattress?

A standard Euro single bed and mattress is 90cm wide and 200cm long. In imperial measurements, this is equal to 3 feet wide by 6 feet 6 long. Euro singles are usually most suited to bunk beds, mid sleepers, or high sleepers. But as they’re 10cm longer than a standard single bed and mattress, Euro singles can be ideal for guest rooms where space is at a premium.

Best for: Kids and guest rooms.

Shop our 3'0 Euro Single 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 small single bed and mattress?

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.

Shop our 2'6 Small 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

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.