How Big Is a Full Size Mattress?

Comfort is vital in getting a good night sleep. To achieve total relaxation from the daily stresses of life, finding the mattress that will provide you the comfort you deserve is crucial. The size of the mattress you will choose will depend on...


Whether you sleep alone or with a partner, your sleeping movements and how much space you are comfortable with while sleeping.

Do you sleep alone and often move in bed while sleeping? Do you and your partner like to sleep very close to each other? Then, a full-size mattress is just perfect for you. What are the dimensions of a Full-Size Mattress? And how big is a full mattress exactly?

Also known as a double mattress, a full-size mattress can originally accommodate two persons or a couple back in the early days.

But as the demand for sleeping space and comfort increases solo users now favor full-size mattresses over single beds. Here are some of the reasons why knowing the size of a full-size mattress matters.

Dimensions of Mattress Differ from Manufacturing

If you’re interested in knowing how big a full-size mattress is, it is important to find out what country it was manufactured from.

Sizes of mattresses differ from country to country. Manufacturers of mattresses around the world set specific dimensions for mattress sizes depending on their target market.

This is because they vary in the processes they employed, the amount of padding they upholstered, the thickness of materials and the support they built the mattresses with.

But the difference between the sizes is just a few inches from each other. 

In the United States and Canada, the standard full-size mattress is 54 inches in width, and 75 inches in height (137 cm × 191 cm).

Other manufacturers make a double extra-long mattress in which they add up to 5 inches to the length of the mattress.

The full-size mattress in New Zealand and Australia is just one inch shorter than the size of US full-size mattress. Those in Europe are five inches longer than in the US.

The Space You Need to Sleep Depends on the Size

How wide is a full-size mattress? Generally, the full-size mattress is 15 inches wider than a twin size mattress. This means, if a couple is sleeping in the bed, they each have 27 inches of sleeping space.

This is already ideal for slim partners who move a lot. On the other hand, the average sized couple may have difficulty maneuvering in bed while finding their good night sleep.

Some People Fit Perfectly in Full-size Mattresses

Nowadays, houses are often built smaller, and more and more people now prefer tiny living. Small houses mean small rooms. This is where the full-size mattress is suitable, particularly for couples with a small living space.

Slim couples who like cuddling and snuggling can significantly benefit from the full-size mattress, provided that they are tranquil sleepers. Aside from having just enough space, it is also cheaper than a queen size mattress.

On the other hand, as the average American body weight increases so does his need for space to sleep in comfortably.

Full-size mattress nowadays caters perfectly for a solo sleeper with a large body, for those who often twist and turn in their sleep or simply for anyone who wants more space.

A full-size mattress is also a good choice for growing children and teens. The additional space enables parents to sit or lie down while reading bed time stories to their kids. Two to three siblings can also sleep comfortably in it.

It is also suitable for teenagers during their growth spurt years when they suddenly grow a several inches in just a few years.

Since mattresses can last up to 15 years depending on its usage, it is good to know the changes in the body of the people who sleep in it. This way, you can avoid outgrowing your bed and buy another one.

Picking the most suitable mattress size and dimension for you is important to ensure your comfort. Since you’re going to invest money and time in finding the best mattress, you must make sure that the size is just right.

Knowing what the dimensions of a full-size mattress are can save you from getting the wrong mattress you’re going to sleep in for one-third of your daily life.


Do not forget that in choosing a mattress size, it should be 10-15 centimeters longer than your height. A mattress size not fit for your body to stretch comfortably in will cause you some serious sleeping problems and aching body every time you wake up.

Sleeping on the right mattress can actually eliminate all these problems giving you the real essence of a good sleep. Is this article informative? Kindly share this to you friends who also want to know what size of mattresses are perfect for them.

Related Resources:

  • How Big Is a Twin Mattress?
  • How Big Is Crib Mattress for Kids? Does It Really Matter?
  • How Big Is a Queen Size Mattress?
  • How Big Is a King Size Mattress? Should You Buy One?
  • How Often Should You Replace Your Mattress?
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