How Big Is A Full-Size Mattress

How Big Is A Full-Size Mattress

Brief: How Big Is A Full-Size Mattress

  1. Dimensions:
    • Full-size mattress: 53 inches (width) x 75 inches (length).
    • Depth varies, approximately 18 inches.
  2. Description:
    • Suitable for college dorms, leaving space for a lamp or nightstand.
    • Thickness ranges from 6 to 10 inches.
    • Made of foam or spring coils.
  3. Benefits:
    • Ideal for adults, offers extra room compared to a twin bed.
    • Suitable for couples with small children or guests.
  4. Considerations for Choosing:
    • Comfort level: Preference for firmness.
    • Mattress types: Foam or spring, with foam being less expensive and better for side sleepers.
    • Firmness: Balance between support and comfort.
    • Price: Quality matters for longevity; start with a good mattress within budget.
    • Sleep position: Medium-firm for back sleepers, softer for side sleepers, firmer for stomach sleepers.
  5. FAQs:
    • Full-size mattress dimensions: 54 x 75 inches.
    • Also known as a double mattress.
    • Slight size variations are possible among manufacturers.
    • Takes up approximately 4.6 square feet.
    • Suitable for single adults; can fit in a queen-size bed frame.
    • Larger than a twin-size mattress by 39 inches in width and 15 inches in length.
    • Too large for a twin-size bed frame.
    • Can sleep two adults comfortably.
    • Weight capacity depends on construction and materials, generally up to 250 lbs.
  6. Key Takeaways:
    • Full-size mattresses offer a balance between space and coziness, suitable for individuals and small families.
    • Important to consider personal comfort preferences and room size when choosing a full-size mattress.
    • Quality and durability are key factors for long-term use and comfort.

Choosing the right mattress can be a challenging task. What size is a full-size mattress? Is a twin bed the same height as a queen or king? What is the standard width of an honest-to-goodness full-size bed? This article describes all these questions.

The average full-size mattress in the United States is 53 inches by 75 inches. They are roughly 18 inches deep, but that may vary depending on whether you sleep on your side or your back. 

How Big Is A Full-Size Mattress

A lot of people may not know how big a full-size mattress actually is or what really constitutes one. It can be confusing to figure out what you need in terms of size when shopping for beds. The following article helps give some context on these issues. Let’s “settle” this debate once and for all.8 inches.

Full-Size Mattress Length

The full-size mattress is the usual size for a standard twin bed. This size is popular in colleges and dorm rooms, as it leaves room for a lamp or a nightstand on either side of the bed. 

The length of a full-size mattress should be about 75 inches long, but it can be longer or shorter depending upon your preference. Full-size mattresses have a thickness of 10 inches to 6 inches, and they can be made out of foam or spring coils.

Full-Size Mattress Width

The average width of a full-size (or twin) mattress is about 53 inches, and that should accommodate any size person. A full-size mattress is a little wider than a twin bed, but it can be longer or shorter depending upon your preference.

Full-Size Mattress Width and Length

Benefits Of Full-Size Mattress

A full-size bed is a standard size for an adult, and it’s the most popular by far. It’s the best size to get because it provides a little extra room than a twin bed without feeling like you’re swimming in it and having plenty of room to walk around your room or position the bed against a wall for more storage space. A full-size mattress is also one of the best options for couples with small children to sleep on at night when they have guests stay over.

Things To Consider While Choosing A Full-Size Mattress

High-quality mattresses cost more than budget mattresses. If you want to buy a good mattress, it’s wise to start by investing in a top-of-the-line product that will last for years. You should consider the following when purchasing the mattress:

Comfort Level

Your body is unique, and no two people are exactly alike, but if you like the feel of firmer mattresses, you might consider one with an even higher thread count.

Mattress Types

When shopping for a mattress, you will need to choose between a spring mattress and a foam bed. Of course, your budget will play a big role in your decision, but you might want to consider the following: foam beds are mostly made of polyurethane foam, and they are less expensive than spring mattresses. They are also suitable for people who sleep on their sides because they offer more support.

Full-Size Mattress Types

The comfort level of both types of mattresses is subjective, so you will need to test out some beds before selecting the one that’s perfect for you. Mattress makers make an effort every day to design new technologies and build better products.


Firmness and comfort are important in selecting the right mattress. You need to find a mattress that offers enough support for your body and one with enough softness to keep you comfortable. Inertia is a thing that makes the bed bounce back when you jump or move around in it, so try to avoid too much bounce. However, it’s important to remember that beds with too much bounce may cause back pain, so consider your individual needs before making a selection.


It’s important to remember that a good mattress will last for years. If you are on a tight budget, you should start with a good quality mattress if the cheaper option doesn’t work out and then think about replacing it with a more expensive one down the road. A full-size bed is not only beautiful and soft, but it’s also very supportive and comfortable. It’s just what you need if you want to get a lot of restful sleep at night.

Sleep Position

If you sleep on your back, you might want to explore a medium-firm mattress. If you sleep on your side, a softer bed might do the trick. If you sleep on your stomach, a firmer mattress is recommended.

Sleep Position and Firmness Full-Size Mattress

And if you move around while sleeping or are looking for relief from muscle pain and backaches, you should consider a premium mattress such as Tempur-Pedic or Stearns and Foster that’s made with thicker padding. Another great feature to look for in full-size mattresses is motion isolation which reduces the movement to almost nothing when one person moves while sleeping.


What is the size of a full-sized mattress?

A full-sized mattress is 54 inches wide by 75 inches long.

What type of mattress is a full-size mattress?

A full-size mattress is also known as a double mattress.

Are all full-size mattresses the same size?

Full-size mattresses may vary slightly in size depending on the manufacturer but typically range from 53 inches to 75 inches in length and width, respectively.

How much space does a full-size mattress take up?

A full-size mattress takes up approximately 4.6 square feet of space.

Are full-size mattresses suitable for a single person?

Yes, full-size mattresses are suitable for single adults.

Will a full-size mattress fit in a queen-size bed frame?

Yes, a full-size mattress will fit in a queen-size bed frame.

How much bigger is a full-size mattress than a twin-size mattress?

A full-size mattress is 39 inches wider and 15 inches longer than a twin-size mattress.

Can a full-size mattress fit in a twin-size bed frame?

No, a full-size mattress is too large to fit in a twin-size bed frame.

How many people can sleep on a full-size mattress?

A full-size mattress can comfortably sleep two adults.

What is the weight capacity of a full-size mattress?

The weight capacity of a full-size mattress depends on its construction and materials, but typically it can support up to 250 lbs.

Nick Favreau

Nick Favreau is an expert mattress writer, whose unbiased reviews and in-depth analyses of mattresses have made him a trusted source of information for those looking for quality sleep.

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