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Twin XL vs. Full Size Mattress: Which One is Right for You?

By: Christina Davies
Updated on: April 05, 2024

  • Twin XL mattresses are 38 inches wide and 80 inches long, while Full-size mattresses are 54 inches wide and 75 inches long. Consider the room size and the need for space when deciding.
  • These mattresses are cost-effective, ideal for single sleepers, provide extra length for tall individuals, save space, and are lightweight. They’re also compatible with bunk beds.
  • Full-size mattresses offer ample sleeping space, are ideal for single sleepers, versatile for various settings, budget-friendly, and come with a wider selection of accessories.
  • Your bedroom size, sleep habits, budget, health conditions, future use, and the need for reusability are key factors in choosing between Twin XL and Full-size mattresses.
  • Understand how Twin XL and Full-size mattresses compare to other standard sizes, such as Twin, Queen, King, Split King/Queen, and California King, to determine the best fit for your specific needs.

When it comes to choosing the perfect mattress, there are numerous factors to consider. For single sleepers, the decision often boils down to choosing between a Twin XL mattress and a Full-size mattress. Each of these mattress sizes offers its own unique set of advantages and considerations. This comprehensive guide will compare the Twin XL and Full-size mattresses to help you make an informed decision. We will discuss their dimensions, pros and cons, and how they stack against other standard mattress sizes. So, let’s dive in and determine which mattress size best suits you.

Sizes and Dimensions

Let’s examine the sizes and dimensions of Twin XL and Full-size mattresses.

AspectTwin XLFull
Dimensions38” x 80”54” x 75”
Surface Area3,040 square inches3,975 square inches
Best ForTall sleepers, Tight budgets,
Narrow rooms
Larger rooms, Space to sprawl,
Shared beds

Twin XL Mattresses

A Twin XL mattress has dimensions of 38 inches in width and 80 inches in length. The “XL” in its name signifies an additional 5 inches of length than a standard Twin mattress. This extra length makes the Twin XL mattress suitable for taller individuals, especially those above 6 feet tall. The 38-inch width of the Twin XL mattress also makes it a comfortable fit in smaller spaces such as college dorm rooms, children’s rooms, and guest rooms.

Full-Size Mattresses

A Full-size mattress measures 54 inches in width and 75 inches in length. While Twin-size beds are a better fit for thin or young adults, Full-size beds are often considered the ideal mattress size for average-weight or older single sleepers. The Full mattress shares the same length as a standard Twin bed, which is 5 inches shorter than a Twin XL bed. However, the 54-inch width of a Full bed provides ample space for movement and ensures a comfortable sleep experience.

Pros and Cons of a Twin XL Mattress (38″ x 80″)

Let’s explore the pros and cons of Twin XL mattresses to help you understand if it is the right choice for you.


  • Cost-Effective: Twin XL mattresses are generally more affordable than larger mattress sizes. They require fewer materials to manufacture, making them a budget-friendly option for shoppers.
  • Suitable for Single Sleepers: If you are a thin or average-weight solo sleeper who doesn’t move around much during sleep, a Twin XL mattress can provide sufficient sleeping space.
  • Provides Extra Length: The extra 5 inches in length, compared to a standard Twin mattress, grants the Twin XL mattress more legroom, rendering it an excellent choice for taller individuals.
  • Space-Saving: Twin XL mattresses are a great option for smaller bedrooms, studio apartments, or shared living spaces, as they only require a minimum room size of around seven by 10 feet.
  • Lightweight: Due to their smaller size and fewer materials, Twin XL mattresses are lightweight and easier to move compared to larger mattress sizes.
  • Compatible With Bunk Bed Frames: Twin XL mattresses are well-suited for smaller bed frames such as bunk beds, allowing for multiple sleepers when two Twin XL mattresses are present.


  • Unsuitable for Couples: Twin XL mattresses are designed for single sleepers and may not provide enough space for couples who prefer more personal space.
  • Provides Limited Width: If you are an average-weight or heavyweight person who likes to move around at night, a Twin XL mattress may not provide enough space for comfortable sleep.
  • Lesser Versatility: While Twin XL mattresses work well for some individuals, they may not be as versatile for others. If you occasionally have heavy people or couples as guests, a Twin XL mattress may not be sufficient for the guest room.
  • Limited Selection: Twin XL mattresses may have a slightly more limited selection of bedding accessories and design options than standard Twin or Full mattresses.

Pros and Cons of a Full Mattress (54″ x 75″)

Now, let’s explore the benefits and cons of Full-size mattresses to help you determine if it is the right choice for your sleep needs.


  • Ample Sleeping Space: Full mattresses offer 16 inches of extra width compared to Twin XL mattresses, providing more room for single sleepers to stretch out comfortably. In some cases, a Full mattress may even be able to accommodate two adults if they are both thin and short.
  • Ideal for Single Sleepers: Full-size mattresses often accommodate average-weight or heavyweight sleepers needing more space than Twin mattresses.
  • Offers Versatility: Full-size mattresses are versatile and can be used in various settings. They are a better choice for guest rooms, especially when guests require more sleeping space.
  • Budget-Friendly: While larger than Twin XL mattresses, Full-size mattresses are still more affordable than larger sizes like Queen or King, making them an attractive option for those looking for a balance of size and cost.
  • Wider Selection: Full beds are generally more popular than Twin XL beds, which means there is a wider selection of bedding accessories, bed frames, and designs available for Full-size mattresses.


  • Offers Limited Length: Full mattresses are 75 inches long, which is the same length as a regular Twin bed. This may not provide enough legroom for taller individuals who are 6 feet tall or above.
  • Additional Space Requirements: A Full mattress requires a minimum room size of 10 by 12 feet, making it less suitable for smaller bedrooms where space-saving is a priority.
  • Higher Accessories Costs: While easier to find, Full-size mattress accessories and bed frames can be more expensive than Twin XL options due to their larger size.
  • Less Motion Isolation: If you are sharing a Full mattress with a partner, you will sleep closer to each other, resulting in less motion isolation than larger beds.

Which One Should You Choose: Twin XL or Full-Size Mattress?

The decision between a Twin XL and Full-size mattress ultimately depends on several factors that are unique to your personal preferences and needs. Consider the following factors to make an informed decision:

Bedroom Size

The size of your bedroom is crucial in selecting the right mattress. Smaller bedrooms will benefit from a Twin XL mattress, while larger bedrooms can accommodate a Full-size mattress. It is important to ensure that the mattress size allows for sufficient movement and furniture placement while maintaining the overall aesthetic of the bedroom.

Sleep Habits and Sleep Partners

Your sleep habits and whether you share the bed with a partner are important considerations. A Twin XL mattress may not provide enough space if you tend to move around a lot during sleep or if the bed needs to accommodate more than one person. In such cases, a Full-size mattress would be a more suitable option.


It is important to consider your budget when choosing a mattress. Full-size mattresses are generally more expensive than Twin XL mattresses. Take into account not only the cost of the mattress but also any additional accessories such as bedding and bed frames. Remember that larger beds often come with higher accessory costs.

Health Conditions

If you have any health conditions such as back pain, arthritis, or restless sleeping, you may require more space to move around comfortably during sleep. Consider a mattress size that caters to your specific health needs and provides the necessary support for a good night’s rest.

Future Use and Reusability

Think about your future plans for the mattress. If you expect to move to a larger living space or need a bed for the long term, a Full-size mattress may offer greater Versatility. Additionally, consider if you plan to use the mattress for purposes other than regular sleeping, such as in guest rooms or as a daybed, and choose the size accordingly.

How Do Twin XL and Full-Size Mattresses Compare to Other Standard Sizes?

Having delved into the distinctions between Twin XL and Full-size mattresses, let’s now take a brief look at how they stack up against other conventional mattress sizes.

  • Crib Mattress (28 x 52 inches): Crib mattresses are designed for newborns, babies, and toddlers. They are significantly smaller than Twin XL and Full-size mattresses and unsuitable for adult use.
  • Twin Mattress (38 x 75 inches): The standard Twin bed size shares the same width as a Twin XL mattress but is 5 inches shorter. In comparison to a Full-size bed, Twin mattresses have the same length but are 16 inches narrower.
  • Queen Mattress (60 x 80 inches): Queen-size mattresses are larger than both Twin XL and Full-size mattresses. They offer the same length as a Twin XL but provide an additional 22 inches of width. Compared to a Full bed, Queen beds offer 6 inches of extra width and 5 inches of extra length, making them a more suitable choice for couples.
  • King Mattress (76 x 80 inches): A Twin XL mattress shares the same length as a King bed but is only half the width. King mattresses are 22 inches wider and 5 inches longer than Full beds, providing more space and enhanced comfort. They are well-suited for couples and families.
  • Split King Mattress/Split Queen Mattress: Split-type mattresses, such as Split King and Split Queen, are regular King and Queen beds split in the middle. Split King mattresses consist of two Twin XL mattresses placed side by side, while Split Queen mattresses consist of two 30 x 80-inch mattresses combined. These mattresses allow sleepers on each side of the bed to customize their sleeping experience and minimize motion transfer.
  • California King Mattress (72 x 84 inches): California King mattresses are wider and longer than Twin XL mattresses. They offer an additional 34 inches in width and 9 inches in length compared to Twin XL mattresses. California King beds are particularly comfortable for taller sleepers.

It is important to consider the various standard mattress sizes and their dimensions to determine which size best suits your needs.

FAQs about Twin XL vs. Full Size Mattress

Let’s delve into some frequently asked questions about Twin XL and Full-size mattresses to address common questions.

Can two people sleep on a Twin XL?

No, a Twin XL mattress is not suitable for two people to sleep comfortably. Twin XL mattresses are intended for solo sleepers and may not offer sufficient space for two people.

Will a Twin XL fit a Full bed?

No, a Twin XL mattress will not fit a Full-size bed. Twin XL mattresses are 16 inches narrower and 5 inches longer than Full-size mattresses, making them incompatible in terms of size.

Is a Twin XL bigger than a Full size?

No, a Twin XL mattress is not bigger than a Full-size mattress. Full-size mattresses are 16 inches wider than Twin XL mattresses. However, Twin XL mattresses provide an extra 5 inches in length compared to Full-size mattresses, making them more suitable for taller individuals.

Is a Twin XL closer to Full or Twin?

A Twin XL mattress is closer in size to a Twin mattress than a Full-size mattress. While Twin XL mattresses are only 5 inches longer than a standard Twin mattress, Full-size mattresses are 16 inches wider than both Twin XL and Twin mattresses.

Which mattress is better: Twin or Twin XL?

The choice between a Twin and a Twin XL mattress depends on your specific needs. If you require extra legroom and are taller, the Twin XL mattress would be the better option. However, if space-saving is a priority or if you have a smaller bedroom, the standard Twin mattress may be more suitable.

Do Twin sheets fit Twin XL mattresses?

No, Twin sheets do not usually fit Twin XL mattresses due to the 5-inch length difference between the two sizes. Twin XL mattresses require Twin XL sheets for a proper fit.

Remember, when choosing a mattress, consider your specific needs and preferences to ensure a comfortable and restful sleep experience.


Choosing the right mattress size is vital for a good night’s sleep. When deciding between a Twin XL and a Full-size mattress, consider factors such as bedroom size, sleep habits, budget, and future use. Twin XL mattresses are suitable for taller individuals and space-saving needs, while Full-size mattresses are better for average-weight or heavier single sleepers. Each size has its own pros and cons, so it’s important to weigh them against your specific requirements. Additionally, consider how Twin XL and Full-size mattresses compare to other standard sizes to determine the best fit for your needs. With this information, you’ll be well-equipped to make an informed decision and find the best mattress for a restful sleep.


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