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Twin XL vs Full Size Mattress: Choosing the Right Option for Your Needs

Mattress Resources
Read Time: 5 minutes

  • Twin XL mattresses are 5 inches longer than standard Twin mattresses, making them ideal for taller individuals seeking extra legroom.
  • Full-size mattresses provide more width, offering a spacious sleep surface suitable for single sleepers or combination sleepers.
  • Twin XL mattresses are budget-friendly and versatile, fitting well in narrow rooms and are often used in college dormitories.
  • When choosing between Twin XL and Full-size, consider factors like room size, budget, and whether you’ll be sharing the bed for a personalized decision.

When it comes to selecting the perfect mattress, there are several factors to consider. Two popular options are the Twin XL and Full Size mattresses. While they may seem similar at first glance, key differences can greatly impact your comfort and overall sleeping experience. In this article, we will explore the various factors to consider when choosing between a Twin XL and full-size mattress, including price, height, room size, accessories, and the number of sleeping partners. By the end, you will clearly understand which mattress suits your specific needs.

Twin XL Size Mattress: Ideal for Tall Sleepers and Versatile Spaces

A Twin XL mattress measures 38 inches wide and 80 inches long, making it an excellent choice for individuals who require extra legroom or have limited space for bunk beds. This size is commonly found in college dormitories and children’s bedrooms, offering a comfortable sleep surface without taking up excessive space.

Advantages of Twin XL Mattress

  1. Ideal for Tall Individuals: The additional five inches in length compared to a standard Twin mattress makes the Twin XL suitable for taller sleepers. It ensures that their legs are not left hanging off the bed, promoting a more comfortable sleep experience.
  2. Versatile for Narrow Rooms: If you have a smaller bedroom or limited floor space, the Twin XL mattress is an excellent option. Its narrower width allows for easy maneuverability and leaves room for other furniture or activities.
  3. Budget-Friendly: Twin XL mattresses are generally more affordable than Full-size mattresses. If budget is a concern, opting for the Twin XL can help you save some extra cash without compromising on comfort.
  4. Perfect for Growing Children: Twin XL mattresses are also a popular choice for children’s bedrooms. They provide ample space for kids to grow, play, and sleep comfortably. Additionally, Twin XL mattresses can be used in bunk bed frames, allowing for more space for activities.

Considerations for Twin XL Mattress

  1. Limited Accessories: While Twin XL mattresses are widely available, the range of accessories specifically designed for this size can be limited compared to larger sizes. However, standard Twin accessories can be used with Twin XL mattresses.
  2. Occupies More Space: Although suitable for narrow rooms, the Twin XL mattress still takes up more space than a regular Twin mattress. It is essential to consider the dimensions of your room and ensure it can accommodate the slightly larger size.

Full Size Mattress: Spacious and Versatile for Single Sleepers

A Full-size mattress, also known as a king mattress or a Double mattress, measures 54 inches wide and 75 inches long. It offers more surface area than a Twin XL, making it an excellent choice for single sleepers who desire extra space or have a larger room.

Advantages of Full-Size Mattress

  1. Spacious for Single Sleepers: The additional width of the Full-size mattress provides more room for single sleepers to stretch out comfortably. It allows for easy movement during sleep and accommodates individuals who prefer more space.
  2. Suitable for Combination Sleepers: If you are a combination sleeper who frequently changes positions throughout the night, a Full-size mattress offers enough surface area to accommodate your movements without feeling restricted.
  3. Versatile for Guest Rooms: Full-size mattresses are also ideal for guest rooms. They provide ample space for visitors to relax and unwind, ensuring a comfortable stay during their visit.
  4. Abundance of Accessories: Full-size mattresses have a wide range of accessories available, including sheets, comforters, and mattress toppers. This availability allows you to customize your sleeping experience according to your preferences.

Considerations for Full-Size Mattress

  1. Not Suitable for Couples: While the Full-size mattress provides ample space for single sleepers, it may not be ideal for couples. The width may feel cramped for two individuals, limiting movement and potentially affecting sleep quality.
  2. Shorter Length: Compared to the Twin XL mattress, the Full-size mattress is 5 inches shorter. This may not be suitable for taller individuals who require extra legroom.
  3. Space Considerations: The Full-size mattress occupies more space than the Twin XL, so it is necessary to ensure that your room can accommodate the larger dimensions comfortably.

Twin XL vs Full Size Mattress: Factors to Consider

Choosing between a Twin XL and Full-size mattress depends on various factors that cater to individual preferences and specific needs. Consider the following factors before making your decision:


Budget plays a significant role in mattress purchasing decisions. Twin XL mattresses are generally more affordable than Full-size mattresses, making them an excellent choice for those on a tight budget. However, prices and mattress sizes can vary based on the brand, materials used, and additional features.


Consider your height when deciding between a Twin XL and a Full-size mattress. If you are taller than 6 feet, the Twin XL mattress provides the additional length necessary for a comfortable night’s sleep. However, individuals below 6 feet can still opt for a twin bed or a Full-size mattress without compromising on space.

Room Size

The dimensions of your room are crucial in determining the appropriate mattress size. If the width of your room is smaller, such as 8 feet by 10 feet, a Twin XL mattress would be a suitable choice. Its narrower width allows for easy movement and leaves space for other furniture. A Full-size mattress can provide the desired comfort and aesthetics for larger rooms measuring 10 feet by 12 feet or more.

Sleeping Partner

Consider whether you will be sharing the bed with a partner or a child. If you are sharing two adults in the bed, a Full-size mattress offers more width, allowing for comfortable movement and minimizing disturbances. However, for single sleepers or those sharing the bed with a pet, the Twin XL mattress provides ample space for restful sleep.


The availability of accessories is another factor to consider. Twin XL mattresses may have limited accessory options compared to Full-size mattresses. However, many standard Twin accessories can be used with full and XL mattresses. Full-size mattresses offer a wider range of accessories, allowing for more customization options.


What are the main differences between a Twin XL and a Full-size mattress?

Twin XL mattresses are narrower and longer than Full-size mattresses. The Twin XL typically measures 39 inches in width and 80 inches in length, while a Full-size mattress measures 54 inches in width and 75 inches in length. This difference in size affects the sleeping space and suitability of twin beds for different room sizes.

Which size is better for a single adult – Twin XL bed or Full bed?

The choice between Twin XL and Full-size mattresses for a single adult depends on personal preferences, bed frame, and available space. Twin XL mattresses are more suitable for taller individuals due to the extra length, while Full-size mattresses offer more width for comfortable sleeping space. Consider room size and sleeping habits when making this choice.

Are Twin XL beds or Full-size beds better for guest rooms?

Both Twin XL and Full-size mattresses can work well in guest rooms depending on the space available and the expected guests. Twin XL mattresses are great for single sleepers or when accommodating taller guests, while Full-size mattresses offer more space for couples or multiple guests. Consider the room dimensions and expected use to make the best choice.

Can Twin XL sheets fit a Full-size mattress?

No, Twin XL sheets are designed specifically for Twin XL mattresses, which have different dimensions than Full-size mattresses. Attempting to use Twin XL sheets on a full-size mattress will result in twin mattresses being an improper fit, with the sheets being too narrow and too long.

Do Twin XL or Full-size mattresses cost more?

Generally, Full-size mattresses tend to be more expensive than Twin XL mattresses due to the larger size and increased material required. However, prices for full mattresses can vary based on brand, material quality, and additional features. It’s recommended to compare prices from different manufacturers to find the best value for either size.


In conclusion, choosing between a Twin XL and full-size mattress requires careful consideration of various factors. These include the price, height of the sleeper, size of the room, availability of accessories, and whether you share the bed with a sleeping partner. By assessing these factors in relation to your specific needs and preferences, you can make an informed decision. Remember, comfort and sleep quality should be the primary considerations when choosing a mattress. Take the time to research and test different options to find the perfect fit for a restful night’s sleep.

Christine Lapp is a full-time graduate student and part-time freelancer for Sleep Junkie. Since she was a little girl on the soccer field, Christine has had a love for sports, and she believes everybody should get up and get moving once a day. Now, she incorporates her love for exercise into her studies, pursuing a degree in exercise physiology. Christine understands that what you do during your waking hours has a direct impact on your night’s sleep. In our better sleep guides, she offers advice for developing healthy daytime habits to nurture a more peaceful slumber.

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