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Mattress Thickness: How Thick Should a Mattress Be?

Mattress Thickness

The mattress thickness affects how well it supports, relieves pressure points, is durable, and fits on your bed base; therefore, when selecting the best mattress, consider all the things that matter most to you.

What is the best mattress thickness? There isn’t an easy answer to how thick a mattress should be. The best profile for your mattress will depend on your weight, how you sleep, and the height of your bed frame or base.

We’ll simplify the process by outlining the various mattress thickness categories, who benefits the most from each, and factors to consider when selecting a mattress profile.

Mattress Thickness Chart

The standard thickness of a mattress is between 8 and 14 inches. A 6- to 8-inch-wide foundation layer and a 2- to 3-inch-thick comfort layer is ideal. A transition layer that is 1 to 2 inches thick is also found in most beds.

Beds are categorized according to their thickness in the following table.

FeaturesThickness RangeDescriptionBest For
Low Profile8 inches or lessLow-profile beds are the thinnest. They are only 4 to 8 inches thick. A support core and a basic comfort system are standard parts of them. They feel strong most of the time.Low-profile types are usually acceptable for kids to use. They work well on twin beds and bunk beds, too.
Slim8 to 10 inchesA thin mattress’s comfort layer and support core are generally not very thick.A slim mattress might help adults with trouble getting in and out of a higher bed. A lot of kids also feel safe with them.
Standard10-12 inchesThis is what most mattresses are made of. Standard models usually have a comfortable, stand-out system and a strong support core.Adults weighing 135 and 230 pounds will find this thickness just right, mainly when lying on their backs.
Thick/Deep12-14 inchesThick mattresses frequently strike a balance between cushioning and sturdiness due to their more robust comfort systems and support structures.People who weigh more than 230 pounds or who sleep on their side and need extra pressure release should choose this thickness.
Extra Thick/Deep14 inches or moreExtra-thick models tend to feel soft and fight sagging because they have more room for comfort and support systems. But they are so tall, so they can be hard to get around.People who sleep on their sides and weigh over 230 pounds may like an extra-thick mattress. So does anyone else who wants better support and shaping.

How to Choose a Mattress Thickness Level?

No single mattress size suits all individuals. The key to locating the best mattress height for you is knowing the various mattress thickness options and the ideal candidates for them.

A low-profile mattress sits on top of a low-profile box spring and is less tall than a regular mattress. The slimmer, less bulky, low-profile mattress is more appealing to some. Some people find getting in and out of bed easier on low-profile mattresses because they keep you closer to the floor.

A thin mattress is 8 inches thick or thinner; this category includes futons and folding beds. The average mattress height can vary between 2 and 24 inches. Mattresses that aren’t too thin are also available, with thicknesses ranging from 9 to 10 inches.

A standard thickness of 8 to 12 inches is suitable for most people of average size. Most models at this height have a lot of comfort and support layers. There are a lot of different materials, prices, and firmnesses to choose from because this profile is so popular.

Deep or thick mattresses are 12–16 inches tall. They usually have a significant comfort layer with pressure relief, contouring, and a strong support core. Side sleepers and anyone over 230 pounds prefer thick mattresses because their more profound comfort allows them to sink in. These types are also more durable.

Over-16-inch mattresses are extra-thick. Some exceed 20-inch-thick mattresses. A mattress with soft comfort layers and a sturdy support core is durable enough for sleepers above 230 pounds. Very high-profile models are more expensive, heavy, and harder to put up.

The thickness of a mattress should be determined by several factors, including mobility needs, bed base, bedroom type, health concerns, sleeping position, body weight, and sleep partner(s). Thicker mattresses provide more support, cushioning, durability, and weight spread.

Several factors should be considered when making this decision for an ideal mattress thickness:

1. Sleeping Position

2. Body Weight

When picking a mattress’s thickness, body weight is as significant as sleep position. People who weigh more sink into a mattress more intensely than people who weigh less, so they usually need a thicker mattress for extra support.

Sleepers Under 130 Pounds: Slim mattresses can be excessively hard for sub-130-pound sleepers. Their comfort is usually better on a 12-inch model with a substantial comfort system that relieves pressure and contours. Bunk bed mattresses with thinner foam mattresses are suitable for small children.

Sleepers Between 130 and 230 Pounds: This weight range covers most people who are average size. Usually, a cushion that is 10 to 12 inches thick is enough. However, the best width may depend on how you sleep and the materials of your mattress.

Sleepers Over 230 Pounds: These sleepers prefer a mattress at least 12 to 14 inches thick since it sinks in more deeply. They usually require a firmer support core and a thicker comfort system to shape their bodies without sagging.

3. Number of Sleepers

If you share your bed with a partner or pet, consider a thicker mattress to minimize motion transfer and ensure you have ample space and support.

4. Bed Base Height

The height of your mattress foundation or bed frame can affect how high you want your mattress to be. If your bed base is low, a thicker mattress can make getting in and out of bed easier.

5. Sleeping Alone or Sharing Bed with a Partner

A thick mattress with a tall base layer can support more than a thin mattress. When you share a bed with someone else, you put more weight on the mattress than when you sleep alone.

A lighter mattress can sag if you put more weight on it. A mattress that is at least 10 to 12 inches thick is what you need.

6. Specific Medical Conditions

Consult a healthcare professional or orthopedic specialist for guidance on the appropriate mattress thickness if you have specific medical conditions, such as chronic pain or back pain issues. They may recommend a particular thickness level to address your needs.

What Determines Mattress Thickness?

The thickness of a mattress is primarily determined by the heights of its two primary components: the comfort layer and the base layer.

The comfort system comprises the layers or layers that are closest to the body. It’s the cushiest spot on the bed, especially for relieving stress and conforming to your body while sleeping.

Comfort Layer

The comfort layer is the topmost layer of the mattress, directly beneath the mattress cover. Its purpose is to provide comfort and cushioning to the sleeper.

The thickness of the comfort layer can vary significantly from one mattress to another. Some mattresses have a thin comfort layer, while others feature a thicker one.

The thickness of the comfort layer impacts the level of softness or firmness a mattress offers. A thicker comfort layer provides a softer and more pleasant feel, while a thinner layer offers a firmer experience.

Materials commonly used in the comfort layer include memory foam, latex, polyfoam, and innerspring coils.

Base Layer

The base layer, the support core, is the mattress’s foundation. It is typically located beneath the comfort layer and provides structural support.

The thickness of the base layer is crucial for determining the overall support and durability of the mattress. Thicker base layers generally offer more robust support.

Materials used in the base layer vary based on the mattress type. Innerspring mattresses have a layer of coils in the base, while foam mattresses have high-density foam as the base layer.

The base layer’s thickness also affects how well the mattress distributes weight and maintains spinal alignment.

Transition Layers

There could be a transition layer between the soft top layer and the firmer foundation layer of your mattress. To prevent sinking too deeply into the bed and onto the firm base layer, the transition layer provides additional support by gently propping up your body.

A mattress’s transition layer can be comprised of any number of materials, including innerspring coils, latex, or a firm foam that conforms gently to your body while offering some resistance.

What are the Benefits and Drawbacks of Thick Mattresses?

Thick mattresses are often softer than thin beds, providing a softer surface for the hips, shoulders, and other sensitive areas. However, super-thick mattresses have significant drawbacks, such as being heavier and more expensive.

A thick mattress may improve or detract from your sleep quality, depending on your specific needs and preferences. Here are the benefits and drawbacks:

Benefits of Thick Mattresses

Drawbacks of Thick Mattresses

Learn More About Mattress Information


In conclusion, mattress thickness is critical to achieving a restful and comfortable night’s sleep. Understanding the impact of different thickness levels and choosing the right one for your needs can significantly improve your sleep quality and overall well-being.

Remember that there is no one-size-fits-all answer, so take the time to find the perfect mattress thickness that suits you best.


How thick is the average mattress?

Mattresses typically have a thickness of 8 to 14 inches. A minimum of 2-3 inches thick comfort layer and a minimum of 6-8 inches thick base layer are essential components of the most excellent mattress. There’s also a transition layer, usually 1-2 inches thick, in most mattresses.

Are thicker mattresses better?

A thicker mattress may be preferable for side sleepers, people who weigh more than 230 pounds, and people who find it simpler to get in and out of a higher sleep surface. While most sleepers prefer at least 10 inches of mattress thickness, mattress thickness is determined by personal needs and preferences.

Does the base layer affect mattress durability?

Yes, the base layer’s thickness affects how long a mattress lasts. Most mattresses with firm base foams or pocket coils last between 8 and 10 years. The base layer should be at least half the height of the bed when choosing the mattress’s thickness.

What thickness memory foam mattress is best?

Good memory foam beds 10 to 14 inches thick are enough to support your body. They’re strong and will last for 10 to 15 years. If your memory foam mattress is smaller than this, it might not be supportive enough or last long enough. Within three to four years, it will get soft spots and sag.

How thick should a mattress be for a platform bed?

The optimal mattress height for a platform bed is 12 inches, while mattresses between 14 and 20 inches in height can still work well. Although the typical thickness of a mattress is 12 inches, the range available to consumers is much wider.

Is an 8-inch mattress thick enough?

An 8-inch mattress is theoretically a “standard” size that would accommodate the average sleeper, but depending on your sleep demands and preferences, it may not be thick enough. An 8-inch mattress is often firmer than a 6-inch mattress.

Is a 9-inch mattress thick enough?

A 9-inch mattress should be fine for people who weigh 225 pounds or less for as long as the mattress is supposed to last. For people between 225 and 275 pounds, a 10-inch mattress is better because it is thicker.

How thick does a crib mattress need to be?

As its name suggests, the standard crib mattress is the conventional mattress size utilized in infant cribs. The Consumer Products Safety Commission specifies that a standard (or ordinary) crib mattress must have the following dimensions: 27 1/4 inches in width and 51 1/4 inches long, with a maximum thickness of 6 inches.

Is a 14-inch mattress deep?

Most models at this height have thick comfort and support layers. Because this profile is so popular, consumers may choose from various materials, pricing points, and firmnesses. Thick mattresses, often known as deep mattresses, range in height from 12 to 14 inches.

Is a 6-inch mattress uncomfortable?

Comfortable 6-inch mattresses are possible, but the appropriate layers are essential. You will experience lower back ache if the mattress does not provide sufficient support. On the other hand, if there isn’t enough softness in addition to the support, it will seem firm and uncomfortable.

What is the standard thickness of a queen mattress?

Similar to other mattress dimensions, queen mattresses lack a standard depth. Alternatively, a queen-size mattress could measure between 9 and 16 inches in thickness. Although mattress thickness is subjective, this depth range is sufficiently broad to accommodate all sleeping positions.

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