The Easy Guide to UK Bed and Mattress Size

The Easy Guide to UK Bed and Mattress Size

You've decided to get a new bed or mattress, but you're not familiar with the many sizes of beds that are now available to buy in stores or online. Is there a standard for shoe sizes, or do sizes vary from brand to brand? Should I also get a mattress simultaneously as the bed frame? "Should I get a bed frame and a mattress simultaneously?" Should I, at the same time, look into purchasing a bed frame? How much more room does a king-sized bed need than a regular double bed?

Because it is enough to get anybody on edge, we thought you might find our helpful cheat sheet to be of use. You are free to use it anytime, whenever that may be.

The measurements of a mattress are often used as a standard unit of measurement in the United Kingdom since this is a widespread practice there. This is because there is such a wide variety of styles, dimensions, and sizes of mattresses available on the market today. Many people are concerned about this issue because bed frames are available in many configurations and styles. If you base your estimation of the amount of room you'll need on the dimensions of your bed, you're making a frequent error. Consider, as another option, the dimensions of the bed frame, which will usually always be larger than those of the mattress. One of the most typical errors in incorrectly calculating the required amount of space depends on the mattress's measurements.

Suppose you are searching for a bed or mattress constructed using imperial measures. In that case, the most probable units of measurement that you will see are centimetres and inches since they are considered the most accurate metric counterparts.

Bed and Mattresses Size

Imperial Size   

Metric Size

Small Single

2'6'' x 6'3''

75 x 190cm


3'0'' x 6'3''

90 x 190 cm

Small Double

4'0'' x 6'3''

120 x 190cm


4'6'' x 6'3''

135 x 190cm

King Size

5'0'' x 6'6''

150 x 200cm

Super King Size

6'0'' x 6'6''

180 x 200cm

Standard Bed & Mattress Sizes (UK)

What size is a small single bed and mattress?

Single beds and mattresses are a great alternative for youngsters who aren't as tall as their peers or as tall as most adults. From their narrowest to widest points, they measure 75 centimetres and 190 centimetres, respectively. When using imperial units of measurement, this is comparable to a length of 6 feet and 3 inches and a width of 2 feet and 6 inches. Bed frames and mattresses with a two-foot-and-six-inch width may be a good option for bedrooms with limited space. These beds may serve as an interim "transition bed" for youngsters transitioning from their first "grown-up" bed to their current cot.

They are most suited for usage in small spaces, such as guest beds or for young children transitioning from cribs to full-sized beds.

What size is a single bed and mattress?

This is an excellent option for both young and old. A single bed and mattress have a width of 90 centimetres and a length of 190 centimetres. This item has an imperial width of 3 feet and a length of 6 feet and 3 inches. A single bed measures three feet and one inch long and one foot and one inch wide. Little singles refer to fish less than two metres in length. Beds for children, including bunk beds, are available in this standard size and are the most common option. Due to its versatility, single beds may accommodate children of all ages, from infants to teens.

Best for 1 person

What size is a small double (queen) bed and mattress?

Using the metric system, the width and length of a tiny double bed and mattress are 120 cm and 190 cm, respectively. The length and width are 6 feet 3 inches and 4 feet, respectively. Four feet and one inch are how wide a "small double" bed is. People often call queen beds "Three Quarter" beds because they are longer and wider than single beds but shorter and narrower than double beds. Even though it's big enough for one or two people, two adults may find it a bit tight. This is one of the best options if your room or bedroom isn't big enough for a standard double bed. Small double beds with storage options like ottomans or divan bases are best for small rooms. These make the most of the space you have. Each of these beds is big enough for two people.

Best for 1 person and small bedrooms

What are the dimensions of a double bed and mattress?

The width and length of a normal double bed are 135 centimetres and 190 centimetres, respectively. For these measurements, we utilise the metric system. When expressed in imperial units, this equates to a width of 4'6" and a length of 6'3". A normal double bed and mattress are 4 feet 6 inches long to accommodate two individuals. There are many other kinds of beds that come in this standard size in the UK, but it is the most common.

Best for: Suitable for two individuals and modest to medium-sized rooms

What size is a king-size bed and mattress?

A king-size bed and mattress are 150 centimetres broad and 200 centimetres long when measured in centimetres. "King-sized" beds and mattresses are 5 feet broad by 6 feet 6 inches long in imperial measurement standards. King-sized beds are 6'6" long instead of the usual double's 6'3" bed and mattress. King Size beds and mattresses are longer than standard double beds and mattresses. King-size beds are large enough for two people to sleep simultaneously, but they should only be used in rooms with many open floor spaces.

Ideal for two people who need the additional room, as well as those who are at least 190 centimetres tall.

What size is a super king-size bed and mattress?

It is 6 feet 6 inches long and 6 feet broad, or 180 centimetres wide and 200 centimetres long. In the United Kingdom, the super king size mattress is the largest regular size. If you're looking for a bed that's six feet tall and has enough area for two people to sleep, the super king-sized bed is a terrific option. Having all your loved ones, including your furry family members, in a tiny place on a Sunday morning is an experience like no other.

For two individuals who want a lot of area to spread out while they sleep, this mattress is ideal.

It's usually a good idea to double-check this information before purchasing a bed and mattress in the United Kingdom. Buying a bed frame and a mattress from the same shop is more convenient than choosing between several brands of beds and mattresses from different retailers, so some firms offer their beds and mattresses.