A twin bed, also known as a single bed, is a narrow bed that can sleep one person. These single sleepers are available in two sizes: the standard twin and the [twin XL](https://www.masterclass.com/articles/twin-vs-twin-xl-explained), an extra-long variation. While a full- or queen-size bed is a better fit for larger rooms (like master bedrooms), twin beds are a more common choice for children’s rooms, college dorm rooms, and home guest rooms because of their size and compatibility with bunk beds and daybeds.

A standard twin bed measures 38-inches wide and 75-inches long, a little less than half the size of a king-size mattress (76 inches x 80 inches). 

Twin XL mattresses have five extra inches of length, measuring 38-inches wide and 80-inches long, making them a better choice for taller individuals than the standard twin bed. (This extra-length means that a twin XL mattress cannot fit a standard twin bed frame.)

Twin mattresses have a couple of significant benefits:

- __Size__: A twin mattress is great for those with spatial concerns. The standard twin fits comfortably in the corner of most standard-size bedrooms or dorm rooms, allowing space for other bedroom furniture.
- __Price__: Twin mattresses are an excellent option for those on a budget because they are typically more inexpensive than other larger [mattress types](https://www.masterclass.com/articles/types-of-mattresses) due to their size. 
- __Kid-friendly__: Twin mattresses often serve as a transitional mattress for young children who have outgrown their toddler beds. Additionally, twins are typically the primary mattress size for bunk beds, though some lower bunks can accommodate a full-size mattress. 

While a standard twin-size bed and a twin XL share the same 38-inch width, there are a few differences between the two mattress types, such as: 

- __Size__: The mattress dimensions of a standard size twin bed is 38 inches by 75 inches, whereas the twin XL is 38 by 80 inches—the same length as a queen or king-size bed. Pushing two twin XL mattresses together can create a standard king bed. 
- __Usage__: A standard twin bed is a common choice for children’s bedrooms, where a twin XL is a popular choice for dorms or guest rooms because it has more legroom. 
- __Bedding__: Twin Xl mattresses are five inches longer than standard twin mattresses, so the bedding for these mattress types are not interchangeable. You’ll need to purchase bedding specifically designed to accommodate the longer bed.
- __Price__: Twin XL beds are usually more expensive than a standard twin, which can influence which kind of mattress you buy.

Saw some of the best darn logs of your life with a [MasterClass Annual Membership](https://www.masterclass.com) and exclusive instructional videos from Dr. Matthew Walker, the author of *Why We Sleep* and the founder-director of the Center for Human Sleep Science at the University of California, Berkeley. Between Matthew’s tips for optimal snoozing and info on discovering your body’s ideal rhythms, you’ll be sleeping more deeply in no time.  
Whether you’re in the market for a twin-size innerspring mattress or California king-size memory foam, some mattresses can accommodate every body type and sleep style. Twin beds are a popular choice for kid’s bedrooms or single adults with limited space.


Whether you’re in the market for a twin-size innerspring mattress or California king-size memory foam, some mattresses can accommodate every body type and sleep style. Twin beds are a popular choice for kid’s bedrooms or single adults with limited space.


Twin Bed Dimensions: 3 Key Benefits of Twin Mattresses

A twin bed, also known as a single bed, is a narrow bed that can sleep one person. These single sleepers are available in two sizes: the standard twin and the <a href='https://www.masterclass.com/articles/twin-vs-twin-xl-explained' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com/articles/twin-vs-twin-xl-explained","linkCopy":"twin XL","category":null}'>twin XL</a>, an extra-long variation. While a full- or queen-size bed is a better fit for larger rooms (like master bedrooms), twin beds are a more common choice for children’s rooms, college dorm rooms, and home guest rooms because of their size and compatibility with bunk beds and daybeds.

What Is a Twin Bed?

A standard twin bed measures 38-inches wide and 75-inches long, a little less than half the size of a king-size mattress (76 inches x 80 inches). Twin XL mattresses have five extra inches of length, measuring 38-inches wide and 80-inches long, making them a better choice for taller individuals than the standard twin bed. (This extra-length means that a twin XL mattress cannot fit a standard twin bed frame.)

What Are the Dimensions of a Twin Bed?

Twin mattresses have a couple of significant benefits:<ul class="mc-m-4 list-styled"><li class="">Size: A twin mattress is great for those with spatial concerns. The standard twin fits comfortably in the corner of most standard-size bedrooms or dorm rooms, allowing space for other bedroom furniture. </li><li class="">Price: Twin mattresses are an excellent option for those on a budget because they are typically more inexpensive than other larger <a href='https://www.masterclass.com/articles/types-of-mattresses' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com/articles/types-of-mattresses","linkCopy":"mattress types","category":null}'>mattress types</a> due to their size. </li><li class="">Kid-friendly: Twin mattresses often serve as a transitional mattress for young children who have outgrown their toddler beds. Additionally, twins are typically the primary mattress size for bunk beds, though some lower bunks can accommodate a full-size mattress. </li></ul>

What Are the Benefits of Having a Twin Mattress?

While a standard twin-size bed and a twin XL share the same 38-inch width, there are a few differences between the two mattress types, such as: <ul class="mc-m-4 list-styled"><li class="">Size: The mattress dimensions of a standard size twin bed is 38 inches by 75 inches, whereas the twin XL is 38 by 80 inches—the same length as a queen or king-size bed. Pushing two twin XL mattresses together can create a standard king bed. </li><li class="">Usage: A standard twin bed is a common choice for children’s bedrooms, where a twin XL is a popular choice for dorms or guest rooms because it has more legroom. </li><li class="">Bedding: Twin Xl mattresses are five inches longer than standard twin mattresses, so the bedding for these mattress types are not interchangeable. You’ll need to purchase bedding specifically designed to accommodate the longer bed. </li><li class="">Price: Twin XL beds are usually more expensive than a standard twin, which can influence which kind of mattress you buy. </li></ul>

What Is the Difference Between Twin and Twin XL Beds?

Saw some of the best darn logs of your life with a <a href='https://www.masterclass.com' target='_self' class='mc-text--link' data-mc-segment-trigger='true' data-mc-segment-event-type='Article Page Click' data-event-obj='{"textTag":"p","href":"https://www.masterclass.com","linkCopy":"MasterClass Annual Membership","category":null}'>MasterClass Annual Membership</a> and exclusive instructional videos from Dr. Matthew Walker, the author of Why We Sleep and the founder-director of the Center for Human Sleep Science at the University of California, Berkeley. Between Matthew’s tips for optimal snoozing and info on discovering your body’s ideal rhythms, you’ll be sleeping more deeply in no time.

Want to Learn More About Catching Those Elusive Zs?

Whether you’re in the market for a twin-size innerspring mattress or California king-size memory foam, some mattresses can accommodate every body type and sleep style. Twin beds are a popular choice for kid’s bedrooms or single adults with limited space.