Mattress Sizes at American Mattress


Woman Lying On Mattress In Bedroom


Don’t lose sleep searching for the perfect mattress, at American Mattress we aim to provide you with all of the information you need to uncover which mattress will provide you with a good night's sleep. Whether you are searching for a mattress for yourself, your children, or a guest room, the sleep experts at American Mattress are here to help find the perfect mattress that will meet all of your needs! If you have any questions as you're browsing our mattress selection, contact our team, we are happy to help! Don’t put off a restful night, find the best mattress for you, today at American Mattress.

Mattress Size Chart

Size Dimensions
Twin 38" X 75"
Twin XL 38" X 80"
Full 54" X 74"
Queen 60" X 80"
King 76" X 80"
California King 72" X 84"


Although finding the right “feel” of your mattress is important, there is another factor that is just as important to consider… The size. Finding the right size mattress is crucial in determining which mattress will provide you with the best night's sleep.

As you’re looking for a new mattress, choosing the right size can be daunting. You may seem overwhelmed by little differences in dimensions between some sizes, so we compiled information to help you make the best choice.

Which Mattress Do I Need?

There are many factors to consider when you begin searching for a new mattress. As you browse our mattress selection, keep in mind who will be sleeping in the bed, how large the room is, your sleeping style, and your budget are all things to consider as you browse through our mattress selection.

Twin Mattress

Mattress Dimensions: 38 inches by 75 inches

Minimum Recommended Room Size: 7 feet by 10 feet

Twin mattresses are the smallest of all standard-sized mattresses. Twin mattresses are one of the most common-sized beds available, often best for children and teens. Twin mattresses are not always recommended for adults, though they fit well in smaller rooms and are the ideal mattress for bunk beds.

Twin XL Mattress

Mattress Dimensions: 38 inches by 80 inches

Minimum Recommended Room Size: 9 feet 6 inches by 10 feet 6 inches

Twin XL mattresses are five inches longer than the typical twin mattresses, making it a better small mattress choice for taller individuals. Twin XL mattresses are a great and affordable option for smaller rooms.

Full Mattress

Mattress Dimensions: 54 inches by 75 inches

Minimum Recommended Room Size: 9 feet 6 inches by 10 feet 6 inches

Full mattresses are a great option for single sleepers, they offer enough space for a comfortable sleep and fit well into most room sizes. This size mattress is not recommended for couples, though it is a great option for a guest room.

Queen Mattress

Mattress Dimensions: 60 inches by 80 inches

Minimum recommended room size: 10 feet by 10 feet

Queen mattresses are the most popular standard size mattress and a popular option for couples who do not need too much space or a single adult who likes to stretch out. A queen-size mattress can be a great option for a master bedroom or a guest room.

King Mattress

Mattress Dimensions: 76 inches by 80 inches

Minimum recommended room size: 12 feet by 12 feet

King mattresses provide enough room for two sleepers to stretch out, and have their own space. King mattresses are the widest standard-size mattresses available, making them a great choice for couples, and parents. King mattresses are a great choice for families.

California King Mattress

Mattress Dimensions: 72 inches by 84 inches

Minimum Recommended Room Size: 12 feet by 12 feet

California king mattresses are one of the longest standard mattresses available. California king-sized mattresses are best for tall sleepers, and can comfortably fit a couple and parents. California king-size mattresses are a common choice for families.


Family Pressing On Mattress


Mattress Comfort Styles

Now that you have a better idea of what size mattress would be best for you, and your space, the next thing to consider is the best comfort style and brand. Your regular sleeping position and comfort preferences will help to make the best choice for comfort styles, resulting in a good night’s sleep.


Soft mattresses have a plush feel that is often best for side sleepers. Soft mattresses are made of soft, deep layers made up of multiple cushions and feature a thick top cushion layer. Soft mattresses can be made of a variety of materials ranging from memory foam to innerspring systems. Softer mattresses can provide great support for pressure points, which can alleviate strain on your shoulders and hips. Soft mattresses provide ample support to your body, keeping your body aligned while delivering enough comfort to sleep on your side throughout the night.

Each mattress brand offers a variety of comfort levels and support styles. However, sleepers who prefer a soft comfort level typically prefer the feel of mattress brands such as Tempur-Pedic, Serta, Sealy, and Beautyrest mattresses.


Medium mattresses are ideal for combination sleepers, meaning if you sleep on your side, back, and stomach. Medium mattresses conform to the lower back arch, relieving tension on the lower back muscles, and allowing you to sleep comfortably. Medium mattresses provide the perfect balance of soft comfort and strong support through a variety of materials such as soft memory foam, gel memory foam, and an innerspring system. Medium mattresses are often a great solution for couples with different sleeping preferences.

Many mattress brands offer medium mattress comfort levels. If you are a combination sleeper in search of a medium comfort feel mattress, explore the options of Serta, Tempur-Pedic, nectar, Ghostbed, Eclipse, Beautyrest, and Ashley mattresses.


Firm mattresses are best for back and stomach sleepers. Firm mattresses provide a firmer sleep surface, which will properly align the back and hips, without causing your back to arch. Firm mattresses are made with materials influenced by support and stability. The dense and thin design of firm mattresses provides enough support to keep your spine aligned throughout the night.

If you are searching for a mattress that will provide the support you need for a good night’s sleep, explore the firm mattress options from Sealy, Restonic, Ortho-Pedic, nectar, Eclipse, Beautyrest, and Ashley.

Mattress Size FAQs

What is the difference between a single and a twin-size mattress?

A single and a twin-size mattress are the same sizes. Both have dimensions of 38" by 75", which are designed to fit one person.

What is the difference between a full and a double mattress?

Full and double-size mattresses both represent a mattress of the same dimensions, 54” by 74”.

Are double mattresses twice the size of twin mattresses?

Double mattresses, also known as full-size mattresses are 16” wider than twin-sized mattresses and are of similar length. Contrary to the name, a full-size mattress may be better suited for single sleepers. Historically, they were popular options for sleeping partners in the 1960s; however, there is only 27" across for each person's sleeping area. Alternatively, the 74" in length may work well for dual, shorter sleepers; but it also may be uncomfortable for tall individuals. The decision to purchase a full-size mattress for two people is entirely up to you! Visit an American Mattress location to test a full-size mattress and find the perfect size for you.

What is the difference between a king and a California king mattress?

The difference between a king-size mattress and a California king is 4". A king mattress is 4" wider than a California king, while a California king is 4" longer than a king mattress.

What are the measurements of a California king-size mattress?

A California king-size mattress is 72” by 84”, it is best suited for individuals or a couple. The additional length is helpful for taller people, however, it lacks 4” of width that the king size bed offers.

How wide is a queen-size mattress?

A queen-size mattress is 60 inches wide by 80 inches long and is the most common size mattress. It will comfortably fit couples or individuals and the reasonable size fits almost all bedroom sizes.

How wide is a king-size mattress?

King-sized mattresses are 76 inches long and 80 inches long.