Find your perfect mattress size
Sleep is essential to your health and well-being. The more space you have to sleep in, the better your night’s rest will be. However, many of us often stick to a sleeping space that’s not much bigger (or even smaller) than when we were babies. The width of an average cot is 75cm. Meanwhile, a standard double bed, – one of the most popular mattress sizes in the UK – is 135cm. If you share your bed, that’s just 67.5cm each!
Take a look at our UK mattress size guide to help you make the most of your space – and help you get a better night’s sleep.
| 1 piece mattress in standard UK sizes | Metric (cm) |
Nearest imperial equivalent (feet/inches) |
||
|---|---|---|---|---|
|
Images below are for guidance only |
Width | Length | Width | Length |
Single
|
90 | 190 | 3' | 6'3" |
| Standard 3ft size, perfect for growing children, but it may be worth considering a longer bed if the sleeper is tall. | ||||
Double
|
135 | 190 | 4'6" | 6'3" |
|
First of the 3 most popular standard sizes suitable for couples. You
have a cosy 67.5cm each. Consider a longer bed if you are tall. |
||||
King
|
150 | 200 | 5' | 6'6" |
| Most popular bed for two in the UK, you have 75cm each, and the sleeping area is 10cm longer than a standard double. | ||||
|
Super King 
|
180 | 200 | 6' | 6'6" |
| The biggest and best of the standard sizes, it gives two sleepers 90cm each, and is same length as a king size. | ||||
Alongside the 4 main standard sizes it could be you own a bed base which none of the above quite fit. Below are a couple less common alternative sizes that we can provide for those customers that need them:
| 1 piece mattress in special UK sizes | Metric (cm) |
Nearest imperial equivalent (feet/inches) |
||
|---|---|---|---|---|
|
Images below are for guidance only |
Width | Length | Width | Length |
|
Small Double
|
120 | 190 | 4' | 6'3" |
|
Plenty of space for 1 to stretch out, but extremely cosy for 2. Great for smaller bedrooms where a standard double won't quite fit. |
||||
|
Euro King
|
160 | 200 | 5'3" | 6'6" |
|
For larger vintage or continental beds this size is often referred to
as a 'continental double'. The more room to sleep in the better. Great if a super king won’t quite go. |
||||
|
Emperor
|
200 | 200 | 6'6" | 6'6" |
| The largest of all of our special sizes, an Emperor mattress gives those with large bedrooms the maximum amount of sleeping space, so if you share you both have room to spread out and relax. | ||||
UK Mattress Sizes for Adjustable Beds
If you own or are thinking of buying an adjustable bed base, then the mattress or mattresses you need may not be standard UK sizes. Keep in mind that, if going for a double handset - two single mattresses on one frame - both mattresses should be the same height (e.g. 21cm, 25cm or 30cm). As always, it's important to measure up first. Browse all our adjustable bed bases
*Adjustable beds are often longer than the nearest equivalent static model. Make sure you measure properly before you order.
| Sizes to fit single or dual adjustable beds* | Metric (cm) |
Nearest imperial equivalent (feet/inches) |
||
|---|---|---|---|---|
| *Adjustable beds are often longer than the nearest equivalent static model. Make sure you measure properly before you order. | ||||
|
Images below are for guidance only |
Width | Length | Width | Length |
|
Small Single 
|
75 | 200 | 2'6" | 6'6" |
| For narrow single frame beds or order 2 for a standard king size or king adjustable bed base. If both mattresses are the same height (e.g. 21cm, 25cm or 30cm), you can each select different models and sleep on them side by side. | ||||
|
Long Single 
|
90 | 200 | 3' | 6'6" |
| 10cm longer than a standard single. If you share a standard super king bed and you and your partner prefer different feels, you can select 2 different models and use them side by side provided both mattresses are the same height (e.g. 21cm. 25cm or 30cm). For super king adjustable bed bases with dual mechanisms you will need to order 2 mattresses also the same height. | ||||
|
Long Small Double 
|
120 | 200 | 4' | 6'6" |
| Suits smaller non-standard continental frames, and smaller adjustable beds in small double width (120cm). These generally have just a single handset or mechanism to raise and lower the mattress. Often they are longer than static bed bases. Make sure you measure properly. | ||||
|
Long Double
|
135 | 200 | 4'6" | 6'6" |
| Adjustable beds in standard double width (135cm) generally have just a single handset or mechanism to raise and lower the mattress. Often they are longer than static bed bases. Make sure you measure properly. | ||||
King
|
N/a | N/a | N/a | N/a |
| See small single (75cm width). You will need to order two of these for your adjustable base if using each mechanism independently. Some adjustables also have a synchro function which 'locks' dual units so they rise and fall in unison. If this a permanent requirement of your adjustable bed base, then you may be able to use a 1 piece king size mattress instead. | ||||
|
Super King 
|
N/a | N/a | N/a | N/a |
| See long single (90cm width). You will need to order two of these for your adjustable base if using each mechanism independently. Some adjustables also have a synchro function which 'locks' dual units so they rise and fall in unison. If this a permanent requirement of your adjustable bed base, then you may be able to use a 1 piece super king mattress instead. | ||||
All mattress measurements are approximate. Please allow for a tolerance of +/- 2cm when you order.
TEMPUR® weight capacity is approximately 150kg per side (23 stone)
Q: What is the mattress weight capacity for TEMPUR® mattresses?
A: The TEMPUR® weight capacity is approximately 150kg per side (23 stone).
Q: How many different mattress sizes are there in the UK?
A: In the UK, there are four standard mattress sizes: single, double, king and super king. However, there are many more non-standard sizes available, such as: small double, euro king and emperor. These non-standard sizes are often made to fit continental bed frames, meaning you should make sure you measure up correctly before ordering.
