If you are currently debating on whether to get a twin or full bed, this post will answer these questions for you. It provides an in-depth comparison of the two beds available to help you decide which is ideal for your requirements.

Comparison of Twin vs Full Size and Weight

Before you decide what size to buy, it is important to realize that there are different kinds of mattresses to consider. Before settling for one or another, first, understand the main difference between full and twin mattresses.

The twin mattress size is smaller than the full. The length of the two mattresses are the same; however, the full is much wider.

The twin measures approximately 38 inches wide and 75 inches long, while the full comes in at 53 inches wide and 75 inches long.

While the standard twin and full mattress sizes vary, their weight is pretty much the same. The twin is usually lighter than the full size by a couple of pounds, so you can easily move it from one room to another if need be.

Twin Mattress Facts

Two twin mattresses in a dorm room

As mentioned earlier, the twin mattress is narrower than its full-sized counterpart. Because of this, it is more convenient in confined spaces. The smaller size also gives you more flexibility than the larger bed if you’re looking to fit it into a specific area. Also, the price is usually much lower due to being narrower and generally thinner too.

Full Mattress Facts

Full sized bed (double bed)

A full mattress is wider than a twin but will not be any longer because it still falls within the 75″ length for a standard bed. It will be better suited for larger people, but its width can also make it challenging to fit in smaller bedrooms. The full sized mattress is perfect if you are looking for enough room to move around at night or sleep with another person. Especially if both sleepers are large or prefer to sleep with blankets and sheets all over them, the extra space will be advantageous.

Twin Mattress Outlook

Those who own twin mattresses get more options than those who have a full size mattress, especially if they want to save space in their room or want something that can be moved. For college dorm rooms especially, twin mattresses offer plenty of room and are easier to maneuver. While many people see it as a good option for dorm rooms and other living situations, others consider it too small to provide comfort and support while sleeping.

Full Mattress Outlook

The biggest advantage of choosing a full mattress is that you get plenty of room without sacrificing comfort or support like in a twin bed. Many people consider a full bed a must-have in their bedroom, especially if they have guests over frequently.

Twin Mattress Pros

Space Saver

Perfect for studio apartments and small bedrooms, getting a twin mattress will give you extra space to move around. This way, you don’t have to sacrifice space because of your bed.

Easy to move

While the full size mattress is usually the favorite for many people due to its comfort and size, it can be bulky and difficult to move around if need be. The twin is more convenient since it does not require any help especially if you are alone at home.

Dual purpose

If you like to sleep in your bed but would also like to use your room for other things, a compact twin mattress will be ideal for you. You can often still have space for a couch or another bed in your bedroom when friends or family come over. Also, twin size mattresses are usually the most common type used for bunk beds.


The price of a standard twin mattress varies depending on the model. However, it is usually much cheaper compared to the full size. This way, you can save some money for other things if you are on a budget. It is an excellent option if you are setting up your first home or nursery.

Twin Mattress Cons

Lack of support

Some people say that a twin size mattress does not provide enough support and comfort when sleeping. This can be problematic for those who need proper support while sleeping. However, it is best to consider the fact that different people have different needs and preferences.

Children quickly grow out of it

With time, children will outgrow their twin beds and, like adults, need a bigger bed. The twin size mattress will not accommodate them for long, and there will be no space left for them. Therefore, it is essential to consider this if you plan on buying one for your child.

Full Mattress Pros

Spacious bedding

If you love to cover yourself with blankets and sheets whenever you go to bed, the full size mattress gives you enough room to do so without being too cramped up.

Better for guest rooms

When you have guests over, the full sized bed is better than the twin. It can accommodate larger individuals while still providing enough room for back and shoulder support.

No need to share

If you don’t like to share your space with anyone or just prefer privacy while sleeping, a full-sized mattress will be a good option. You do not have to worry about ending up on the floor if you roll around a lot.

Big enough for you

If you sleep alone and want something large enough for you alone, getting a full sized bed is the way to go. There’s enough space for you to spread out and enjoy without worrying about blankets or sheets rolling off onto the floor.

Full Mattress Cons

Not for small spaces

Those who live in a small apartment or have a small bedroom may find that the full sized bed takes up plenty of space. This can be a problem when you’re trying to fit it in your room.

Price can be high

The price of a full size mattress can be higher than that of a twin size mattress. This is usually because it contains more material and is more expensive to make. However, if you are on a budget, you can still get something for your money’s worth, depending on the model.

Can’t be used in bunk beds

Most bunk beds are twin over twin size bed. So if you have a full bed and later need to change your setup for a bunk bed, your full size mattress will most likely go to waste.

Twin vs Full Mattress FAQ’s

Mattress faq's

Is a full size two twins?

No, a full is not two twins. A full size mattress is a single mattress with the dimension 53″ x 75″ and is not two smaller mattresses side by side as some people may think.

Which is bigger twin or full?

The full size is the larger mattress. Although they are the same length, the full is wider than a twin, making it the bigger mattress size overall.

Can adults sleep on twin bed?

Yes, adults can sleep comfortably on a twin size bed, especially single sleepers. However, people who weigh over 200 pounds should consider buying something a little thicker for more personal space, extra support, and longevity.

Are twin size mattresses used in cribs?

No, a crib mattress is much smaller and must measure between 51 ⅝ to 53 inches in length and 27 ¼ to 28 inches in width. 

Full bed vs double bed; what’s the difference?

There is no difference; they are the same mattress size in terms of dimensions. In places like the UK, a double bed is the name given full beds in the US.

What is a twin xl mattress?

Twin XL mattresses are 38 inches wide (same as a standard twin), but 80 inches long, which is 5 inches longer. The XL stands for “Extra Long”, and these mattresses are best suited for single sleepers over 6 feet tall.


While both mattresses are very popular choices that will offer a good night’s sleep, the best option depends on what you need most.

There are many advantages and disadvantages associated with the twin and full mattresses. The smaller size does come with its own set of problems, such as how hard it is to fit into a particular space or how much it will take away from your valuable sleeping space. As for the advantage, many people see it as more convenient than having a full-sized bed and more room than what you get in a twin bed.

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