Standard Mattress Sizes: Which Mattress and Bed Size to Choose

March 11th, 2016



How to choose a bed size?

There are a number of factors affecting your bed choice, such at what type of mattress support you require and whether you need the base to incorporate storage. However, choosing the right size of bed is also essential in order to get the best night's sleep. There are a number of different sizes available, but what does each size mean? Here's a handy guide to the standard sizes sold by bed manufacturers.


What size do you need?

As a general rule, you should opt for the biggest bed you can fit in your bedroom without overcrowding. If you share a bed with somebody, then this should stop you from being too disturbed by them moving around at night. If you have the space all to yourself, then you will have plenty of room to spread out. In terms of length, the bed should be around ten to fifteen centimetres longer than the tallest person using it to accommodate the pillows and make sure that their feet are fully supported at the end.


Standard bed sizes vary between different countries, so make sure the one you choose is big enough for you to be comfortable.


A quick look at the different bed sizes:


Bed Size

Actual Size

Small Single

75cm by 190cm

Standard Single

90cm by 190cm

Small Double / Queen

120cm by 190cm


135cm by 190cm


150cm by 200cm


180cm by 200cm


Single Beds

The standard single bed is 190cm long and 90 cm wide. It is a perfect size if you don’t have a lot of space in your bedroom for a double or king bed or if you’re looking for a children’s bed.


Double Beds

How wide is a normal double bed? Double beds have measurements of 135cm by 190cm.


King Size Beds

Slightly larger than a double is the king size, which is longer and wider with dimensions of 150cm by 200cm. King size beds are perfect for keeping enough space between you and your partner as you sleep, as the extra space helps stop overheating during the night.


Superking Size Beds

Superking is usually 180cm by 200cm. Some bed manufacturers also make even larger beds such as the emperor size.


How to choose a mattress size?

When choosing new beds and mattresses, one of the most important things you need to consider is the size, especially if you have moved home or are considering up or down-sizing. Depending on where you buy your beds and mattresses from, it can be particularly important to have seriously considered size and the implications, as there are a lot of things you may not have considered – especially if you have only seen your new bed and mattress online.


Mattress Width and Length

The first thing you need to consider is the width and length of mattress you need. Depending on how many people will be sleeping on it, it may be necessary to have at least a double, single or even a king. If you, or your partner, are particularly tall then the length of the mattress is something you should pay particular attention to, taking into consideration the fact that you will not rest your head at the very top end of the mattress. In the UK, standard mattress sizes are the same as the standard bed sizes as seen above, e.g. the Sealy double mattress size is the same as the standard double bed size.


Mattress Depth

Another thing you should consider when choosing a mattress is the depth. This aspect is often overlooked, as many of us do not even realise there is much variety. However, mattresses can range from four to twenty inches thick, with the average being around ten to fourteen inches. Generally speaking, the main concern with mattress thickness is in regards to the weight of the people on it. The heavier the load, the thicker it needs to be in order to be comfortable. You should also consider any difficulty in getting into bed – ensure it will be neither too low nor too tall for you to get onto it comfortably once it has been set up on the frame. This is particularly important for older people and children.



Which Bed Frame to Choose

Finally, when choosing from different beds you also need to consider the size of the bed frame itself. When measuring your bedroom, ensure you take into account the thickness of the bed frame as well as the width of the actual mattress. For example, a simple wooden frame may add around four inches to the width, whereas a divan base may add nothing. Similarly, consider whether you will have a head or foot board as these may also add a couple of inches each. Again, as with mattresses, ensure you choose the height of your bed carefully so that you can easily get in and out of bed, and so there is adequate space underneath for storage if this is an issue.

If you would like more information or would like to order your own new beds or mattresses, visit Sealy UK today.