Mattress Topper Sizes & Depths
Mattress toppers come in a variety of sizes and depths designed to fit UK beds.
They are generally available in the following sizes:
- Single mattress toppers
- Double mattress toppers
- King size mattress toppers
- Superking mattress toppers
In terms of thickness, mattress toppers usually range from 2.5cm to 5cm deep.
Mattress topper sizes
In order to ensure a mattress topper remains secure and doesn’t stretch, it should be the same size as the mattress it is intended for.
Here is a list of the different mattress topper sizes generally stocked by retailers in the UK:
| Topper size | Dimensions |
| Single | 90cm x 190cm (3' x 6'3") |
| Double | 135cm x 190cm (4'6" x 6'3") |
| King | 150cm x 200cm (5' x 6'6") |
| Superking | 180cm x 200cm (6' x 6'6") |
It can be difficult to find a ‘queen size mattress topper’ from a UK website or shop. This is because ‘queen size’ is actually an American term. These beds are slightly larger than a UK standard king size, measuring 152cm x 203cm (or 60" x 80").
Mattress topper depths
Mattress toppers in the UK commonly range from 5cm to 10cm deep. Common depths include 5cm, 7.5cm and 10cm to suit different comfort and firmness preferences. They also come in varying materials and densities.
Is it better to get a thicker mattress topper?
Mattress topper thickness should be dependent on how much of a change to the feel of a mattress, and what type of topper someone is looking for.
If you only want to take an edge of firmness off of your mattress or add a little bit of comfort, a thinner mattress topper is perfectly fine. A 5cm topper provides a minimal change to a bed’s feel. This type of topper would be suitable for those who want a bit more flexibility without significantly altering their mattresses’ firmness level.
A 7.5cm mattress topper is a popular middle-ground option offering a balance between thick and thin.
But if you’d like to drastically change how your mattress feels, whether this is in terms of support or comfort, a thicker, 10cm mattress topper may better suit your needs.
By using thinker toppers, you are putting more material between your body and the mattress beneath you. The fillings inside thicker toppers are usually also dense, which may help to mask the feel of your mattress if you find it uncomfortable.
Should a mattress topper be bigger than the mattress?
No, your mattress topper should be exactly the same size as your current mattress.
If your mattress topper is too big for your mattress, then it is more likely to slide across the surface while you sleep.
But if your mattress topper is too small for your mattress, you risk damaging the topper by stretching it too far. This will also put additional pressure on your mattress.
If you’re feeling more familiar with mattress topper size and depth now, you might be ready to explore our range of mattress toppers.
Or, if you’re looking for additional information on mattress toppers, we have more advice for you below:
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