How Thick Should a Mattress be-Here’s All You Need To Know !

Though the mattress thickness is a matter of personal preference, it should be at least 6 inches thick to provide adequate support and comfort. A thin mattress may offer little support, whereas a thick mattress is much more comfortable.

Not only does mattress thickness affect the overall comfort and support of the mattress, but it can also influence the quality and lifespan of the mattress. Choosing the right mattress thickness for your body type and sleeping habits is essential.

Here are some guidelines to help you find the ideal mattress thickness.

Understanding Mattress Thickness

Before we address the perfect mattress thickness, let’s first understand what it is and how it’s measured. Mattress thickness is measured in inches, the distance from the top of the mattress to the bottom.

Type of mattressThickness
Innerspring8-12 inches
Memory Foam9-14 inches
Latex Foam8-14 inches
Hybrid 9-15 inches
Waterbed9-12 inches

What Is The Optimal Mattress Thickness?

What Is The Optimal Mattress Thickness

Here’s a quick overview of mattress thicknesses and their benefits:

Ultra-thin Thickness

These mattresses, also known as “low profile” or “slim,” are typically around 6 inches thick. They’re a good choice for people who want a minimalist look in their bedroom or have a low bed frame.

Ultra-thin mattresses may also be a good choice for people who sleep on their stomachs and need less padding to avoid feeling too “sunk in.”

Thin Thickness

Thin mattresses, typically around 8 inches thick, offer more support and cushioning than ultra-thin options. They may be better for people who want a balance of support and comfort or for those who sleep on their backs or sides and need more contouring.

Medium Thickness

Medium-thickness mattresses, around 10-12 inches thick, offer a good balance of support and comfort for most people. These mattresses may have a mix of foam and innerspring layers or be all foam.

They’re a ideal for people who want a traditional feel and aren’t sure whether they want a firmer or softer mattress.

Thick Thickness

Thick mattresses offer the most cushioning and support, typically 14 inches or more. They may have multiple layers of foam or other materials and may be suitable for people who need extra support for their back, joints, or other pressure points.

How To Choose The Right Mattress Thickness?

Here are some tips to help you when deciding on the right mattress thickness for your needs:

Consider Your Sleeping Position

  • Back sleepers: If you sleep on your back, you may prefer a medium to medium-firm mattress with a thickness of around 10 inches. A mattress that is too thick or too thin may not provide enough support for your back and may lead to discomfort or pain.
  • Side sleepers: Side sleepers may prefer a softer, more plush mattress with a thickness of around 12-14 inches. This will help to cushion the pressure points on the hips and shoulders.
  • Stomach sleepers: Stomach sleepers may benefit from a firmer, thinner mattress with a thickness of around 8-10 inches. This will help to prevent the stomach from sinking too far into the mattress, which can cause back pain and discomfort.
  • Combination sleepers: If you sleep in multiple positions throughout the night, you may benefit from a medium-firm mattress with a thickness of around 10-12 inches. This will provide the right balance of support and comfort for all sleeping positions.

Consider your body weight

A thinner mattress is usually recommended for those who are light in body weight, such as those under 130 pounds. These mattresses are usually more supportive and provide more contouring than thicker ones.

The medium-sized people who weigh around 130 to 230 pounds should go for medium thickness.

On the other hand, those who are heavier in body weight, such as those over 230 pounds, typically require a thicker mattress.

Test it out

If possible, try out the mattress in person before purchasing. If you cannot try it out in person, read reviews from other customers to get a sense of the mattress’s thickness and comfort level.

Consider the temperature

If you live in a colder climate, you may want something thicker to provide more warmth. On the other hand, a thinner option may be more suitable for warmer weather.

Consult with a professional

If you are still unsure about the right thickness for your needs, consider consulting with a mattress professional or medical professional.

Consider Your Budget

Your budget is also essential when selecting a mattress. Thinner mattresses are generally more affordable, while thicker mattresses will cost more.

What Factors Affect Mattress Thickness?

When choosing a mattress, there are several factors to consider that can affect the thickness of the mattress. These include:

Type of mattress

The thicker the mattress, the more foam layers and other materials are used to create the mattress. Memory foam mattresses, for example, are usually thicker than innerspring mattresses.

Comfort layer

The comfort layer is the top layer of a mattress that provides cushioning and support for your body. This layer is typically made up of foam, such as memory foam or polyfoam, and is designed to conform to your body and provide pressure relief.

Size of the mattress

Generally, larger mattresses are thicker than smaller mattresses, as more material is used to make them. For example, a king-size mattress is typically thicker than a twin-size mattress.

Type of foundation the mattress is placed on

The base layer is the bottom layer of the mattress that provides support and stability. This layer typically comprises a high-density foam or a coil system; its thickness depends on the support system used.

Advantages and Disadvantages Of Thicker And Thin Mattresses

Here are some pros and cons when deciding between a thicker or thin mattress:

Advantages of a thick mattress

  • More support: Thicker mattresses tend to offer more support for heavier individuals or those with back pain. The extra layers of foam or padding can help distribute weight evenly and provide a more comfortable sleep surface.
  • Durability: Thicker mattresses may also be more durable as they have more layers of materials to withstand wear and tear.

Disadvantages of a Thick Mattress

  • Higher cost: Thicker mattresses tend to be more expensive due to the additional materials used in their construction.
  • Difficulty moving: These mattresses can be heavy and difficult to move, making it difficult to change the sheets or rearrange the bedroom.
  • May be too firm: For some people, thicker mattresses can be too firm and not offer enough pressure relief.

Advantages of a Thin Mattress

  • Low cost: Thin mattresses are more affordable due to the fewer materials used in their construction.
  • Easy to move: Thin mattresses are lighter and easier to move, making them a good choice for people who need to change the sheets or rearrange the bedroom frequently.
  • Cooler sleep surface: Some thin mattresses are made with unique materials that help dissipate heat, making them a good choice for people who get hot at night.

Disadvantages of a Thin Mattress

  • Less support: Thin mattresses may not offer as much support for heavier individuals or those with back pain.
  • Short lifespan: Thin mattresses may not be as durable as thicker ones and may need to be replaced more frequently.
  • May be too soft: For some people, thin mattresses can be too soft and not provide enough support for proper spinal alignment.
credit : VeroLinens


Are hotel mattresses firm or soft?

Hotel mattresses can vary in terms of firmness or softness. Some hotels may have firmer mattresses while others may have softer ones, depending on the preferences of the hotel and its guests. so it’s difficult to say which is more common in hotels because Some people prefer firmer mattresses while others prefer softer ones. I suggest checking with the hotel you’re planning on staying at to see if they can provide more information about their mattresses.

At what age should a mattress be replaced?

The general rule is to replace a mattress every 7-10 years. But some mattresses may need to be replaced after just a few years, while others may last longer. However, this can vary depending on the type of mattress and the quality.

Is 5 inches thick enough for mattress?

A 5-inch mattress may be suitable for some people, but it may not be thick enough for others. The thickness of a mattress can impact the level of comfort and support it provides.It ultimately depends on your individual needs and preferences. If you prefer a firmer surface or need less cushioning, a 5-inch mattress might be sufficient.


So, how thick should a mattress be? Most people will benefit from a mattress between 10 and 14 inches thick, but it is ultimately up to you to decide which mattress is right for you. 

Heavier sleepers may want to choose a mattress that is 10 to 12 inches thick, while lighter sleepers may want to choose a mattress that is 8 to 10 inches thick. When selecting a mattress, you must consider your sleeping position, weight, and budget.

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Rene C. Evans

Hi, I'm Rene C. Evans author and owner of this website. Though this website is not related to manufacturing company of mattresses but I extensively studying, and analyzing mattresses and inform you solutions regarding mattress problem that will help you to take rest properly.

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