What Thickness Mattress Topper Should I Get?

The benefits of using a mattress topper are endless—from increasing the lifespan of your mattress to reducing allergies and helping you with back pain. However, purchasing a mattress topper that’s thicker or thinner than it should be means money thrown down the drain as it won’t provide the right cushioning or pain relief. 

That being said, you might be left wondering,  “what thickness mattress topper should I get?” As the answer might range from 5 to 10 cm, we will explain the details below. 

How Thick Should a Mattress Topper Be?

As everybody’s preferences vary, you should know that there isn’t a one-size-fits-all mattress topper. Namely, topper thickness varies from around five to ten centimeters.

5 cm

The thinnest topper available on the market is roughly 5 cm, which means that, although not a miracle worker, it can slightly soften your overly firm mattress, add a little extra cushioning, or give a touch of firmness to a soft mattress. 

8 cm

A few centimeters can make quite a difference for toppers providing the right comfort and support. So, a mattress topper at around 8 cm can improve the feel of your existing mattress quite more than a five-centimeter one and thus help with back pain as well as other body aches caused by your extremely firm or mushy mattress. 

10 cm

Everything above 10 cm is considered a thick mattress topper that can completely alter the feel of your mattress. These also come with their drawbacks and benefits.

Memory foam mattress toppers with this thickness, for instance, are ideal for couples that want to improve motion isolation as they naturally absorb movement. 10-cm thick mattress toppers are also ideal for camping when a conventional bed is not an option.

Do note, though, that a sagging mattress that causes either squeaky noises or has indented layers should not be covered with a topper of any thickness. This is mostly because the topper won’t entirely fill the indentations, and you will still hear the bothering noises.

Thickness Does Not Always Mean Comfort

An important thing to consider when deciding on the thickness of your mattress topper is that thickness doesn't always equal comfort. This is mostly because comfort depends equally on the material type as it depends on its thickness and density.

Thickness vs. Density

Before understanding what thickness mattress topper is the best for you, you need to know the main difference between thickness and density.

While density refers to the volume and weight of the topper material, thickness indicates its height. The density is measured in terms of the weight of a cubic foot of the topper, and, generally, the higher it is, the better the quality of the material. 

In a nutshell, a low-density mattress topper is less firm and supportive than a high-density one, which is why you should always consider this factor before considering the thickness.

Other Factors to Consider When Assessing the Thickness of a Topper

Body Weight

To help you decide on the right mattress topper for your needs, we created a rough guide on the required thickness for your body weight.

  • 100 kg and below - 5 cm 
  • 125 kg and below - 8 cm
  • 125 kg and above -10 cm

Health Issues

If you are struggling with spine stiffness, back pain, or shoulder pain, you might want to consider changing the firmness of your mattress. As, according to a significant study, medium-firm mattresses can reduce low back pain, you need to either soften your stony mattress or add firmness to an overly soft one to achieve this goal. 

Your Bed Height Preference

The height of your bed mostly depends on personal choices and room space which is why you should pay attention to these details when purchasing a mattress topper. If you have a smaller room, make sure your bed doesn’t take up a lot of space between the floor and ceiling in order to create the perfect living environment.

Sleeping Position

The sleeping position is yet another factor to consider when choosing the right topper thickness as the thinnest ones can best suit belly sleepers, while side or back sleepers might require medium to high thickness.

In Summary

As insignificant as it may sound, mattress topper thickness is one of the most important things to consider when choosing a topper to satisfy your specific needs. 

The right thickness can certainly improve the feel of your mattress and make it as cushy as you desire, but make sure that you are not sleeping on a sagging mattress as no matter the thickness, a mattress topper cannot fill in the indentations. 

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