UK Mattress Size Guide

The UK bed market has exploded in recent years. But the traditional way of buying a bed and a mattress together, from the same shop, at the same time, is no longer the norm.

Buying a bed from a high street shop or out-of-town outlet is increasingly less common too, with more and more online retailers offering everything from simple frames for under a hundred pounds, to the highest quality designer beds that cost thousands.

One of the drawbacks of buying a bed from the likes of Amazon or eBay, is that some global suppliers display the sizes in feet and inches and others in metres and centimetres – and since you don’t get to try out or measure up your new bed first, it’s important to know about mattress sizes.

King Size Mattress Dimensions Uk

At Brighter, our memory foam mattress-in-a-box comes in four sizes - single, double, king size and super king size. Here’s our quick size guide to mattress sizes, UK (cm) first, then US (in), plus some advice on who the different sized beds are most suitable for.

What size is a single mattress?

Single mattress dimensions are 90cm x 190cm, or 35.4in x 74.8in. Singles are typically suitable for a youngster who’s outgrown a child’s bed, for students living in dormitories with smaller beds, or for the spare bed in your box room at home.

What size is a double mattress?

Double mattress dimensions are 130cm x 190cm, or 53.1in x 74.8in. Ideal for single adults who enjoy lots of extra room for movement, doubles are not good for co-sleeping, as you each have the same amount of room a baby has in a cot. Since partner disturbance is the main cause of interrupted sleep, a standard double mattress size isn’t enough, so we recommend a king size mattress or above.

What size is a king size mattress?

King size mattress dimensions are 150cm x 198cm, or 59.1in x 78in. King size mattresses are perfect for average sized couples, giving you and your partner room to move during the night without encroaching on each other’s space.

What size is a super king size mattress?

Super king size mattress dimensions are 180cm x 198cm, or 70.1in x 78in. The champion of mattress sizes provides more than enough space for people to stretch their arms and legs, and toss and turn without spoiling their partner’s sleep. Perfect when little ones climb in during the night, and even enough room for the dog to sprawl on the end the next morning.

Since you’re reading about mattress sizes, why not check out our Brighter Mattress, which promises not just the best night’s sleep you’ve had in years, but a brighter next day too – or your money back.

Visit our shop now to find out more about the mattress-in-a-box that’s changing the way people think about sleep.