Twin vs. Full: What’s the Difference?

For solo sleepers looking for a new mattress, a twin or full size bed could be the perfect size for your living space. Both twin and full accommodates smaller bedrooms, including guest rooms.

In our article, we review the differences between a twin and a full, including price and recommended room space to help you find the best mattress.

Comparison Between Twin & Full Bed

What’s a Twin Size Mattress?

A twin size mattress measures 38 inches by 75 inches—the smallest standard size available on the market. Twin beds are the next mattress size children move to after “graduating” from a crib mattress. Twin size beds are compact, easy to move, and budget-friendly, making them an excellent choice for children’s rooms and limited living space, like studio apartments.

New twin mattresses often come with upgraded features like hypoallergenic covers or advanced cooling technology, catering to modern needs. They are also a favorite for temporary setups, such as guest beds or daybeds.

Twin mattresses are compatible with bunk beds, the perfect option for families with more than one child. Bunk beds utilize living space to create more play room.

For added convenience, some bunk bed designs incorporate storage drawers or trundle options, maximizing functionality in small rooms.

Pricing

The cost for a twin bed varies depending on special features and materials, but potential shoppers can expect to pay between $100 to $1500.

High-end twin mattresses may feature luxury materials like organic latex or gel-infused memory foam, making them suitable for those seeking premium sleep solutions for children or single sleepers.

Recommended Room Space

Smaller bedrooms, at least 7 feet by 10 feet, are best for twin size mattresses, with space for additional furniture and walking room.

Rooms with built-in storage or multifunctional furniture can further optimize the available space.

Accessories

Something to also keep in mind is the accessories needed for your specific mattress size. Twin mattresses are among the most common mattress sizes, making it easy to find accessories such as fitted sheets, comforters, mattress protectors, and bed frames. Many stores offer a wide variety of colors, patterns, and materials to suit any style or preference.

However, while standard twin accessories are widely available, finding accessories for variations like twin XL or custom twin sizes might require additional effort or specialty retailers. If you’re choosing a twin mattress for children, you might also need waterproof mattress protectors or themed bedding, both of which are readily accessible in most markets.

Pros

• Easy to move
• Perfect for kids
• Budget-friendly
• Fits smaller rooms
• Flexible Usage 

Cons

• Too small for couples
• Too short for tall sleepers
• May lack luxury features

SEE ALSO: Best Mattress That Won’t Sag

What’s a Full Size Mattress?

A full size mattress, or double bed, is 54 inches by 75 inches, providing more room to sprawl out. Full size beds used to be the standard size for couples until the queen size mattress was created in the 1940s. Today, full mattresses are considered too small for couples; however, if you need a comfortable mattress for a teenager, a full fits the bill.

Full XL beds are also available, though not as accessible as a standard full. Full XL mattresses are the same size as a full, except 5 inches longer for more legroom.

Full XLs are ideal for taller individuals or those who want added length in compact bedroom spaces, making them an excellent alternative to a queen for single sleepers.

Pricing

Prices range between $500 to $3000 for a full bed, depending on included sleep technologies and the number of layers.

Specialty features, such as advanced cooling layers or organic materials, can push prices higher. Budget-friendly full mattresses often feature fewer layers but still offer excellent comfort for single sleepers or teenagers.

Recommended Room Space

The room size for a full size mattress should be at least 10 feet by 12 feet to fit the bed frame, furniture, and allow walking space.

To ensure a balanced aesthetic, consider the placement of additional furniture like nightstands or dressers. A full-size mattress can also work well in guest rooms that double as home offices.

Accessories

Full size mattresses are relatively easy to shop for, with a wide range of compatible bedding and accessories available. Sheets, mattress toppers, and comforters for full mattresses are commonly found in stores and online. However, for the less common Full XL size, finding fitted sheets or bed frames may require specialty retailers.

Pros

• More sleeping space
• Perfect for teenagers and single adults
• Fits small bedrooms
• Affordable compared to larger sizes 
• Easier to move than a queen or king mattress

Cons

• Too small for couples
• Higher cost than a twin
• Not as widely available in premium models 
• Limited length for taller sleepers

Many shoppers like the idea of a natural mattress with contouring latex foam and other organic materials. These beds can be quite expensive when you’re looking at a larger size, but they’re quite budget-friendly if you’re considering a twin mattress. There are many natural latex mattresses with eco-friendly materials on the market, but our top recommendation is the Amerisleep Organica.

The first layer of the Amerisleep Organica is its fiberglass-free fire barrier of organic wool. This wool layer serves other purposes as well, boosting the bed’s overall comfort potential. The material also wicks away heat and cushions the body.

The second layer is Talalay latex foam, designed to flex under bodyweight for full-body pressure relief. The latex feels buoyant, minimizing sinkage while contouring to the body’s curves.

The pocketed coils of the support core are individually wrapped to maximize motion isolation. The coils along the sides are also thicker to increase support, making it easy to sit on the side or slide out of bed. The Dunlop latex foam base gives the coils a surface to push off from as they react to movements, allowing the coils to stand strong even after years of use.

These layers are surrounded by an organic cotton fabric cover. The weave of the cotton promotes heat dispersion, ensuring the bed feels cool and dry.

The Amerisleep Organica is backed by free shipping and returns, a 100-night sleep trial, and a 20-year warranty.

Read Our Full Review of the Amerisleep Organica Mattress

While a full mattress is far from the largest mattress size on the market, they can still represent a significant investment for budget shoppers. Particularly if they’re shopping for a hybrid mattress, one of the more costly types of mattresses. Shoppers who want to save their money while getting a great deal should perhaps consider the Vaya Hybrid.

The top layer is proprietary Vaya Comfort Foam, responsive material that’s quick to adapt to the sleeper. It feels light and eases pressure, staying cool as it hugs the body. Then the support core is pocketed coils on a foam base, with corner-to-corner-edge support.

All foams inside a Vaya Mattress are certified safe by CertiPUR-US®, a third-party organization dedicated to double-checking foam production for potentially harmful materials. A CertiPUR-US® certified mattress has a low amount of VOCs, decreasing the chances the bed will have that “new mattress” smell.

What if you don’t enjoy a bouncy mattress? aya also offers their original foam bed, the Vaya Mattress. It has the same type of comfort foam as the Vaya Hybrid, but with an underlying base foam for structural integrity and spine support.

The Vaya Hybrid comes with free shipping and returns, a 100-night sleep trial, and a 10-year warranty.

SEE ALSO: Vaya Mattress Review

Other Mattress Dimensions

If a twin or full mattress feels too small for your needs, other mattress sizes, including twin XL, queen, king, and California king, might be better.

Twin XL Mattress

Twin XL size mattresses measure 38 inches by 80 inches—5 inches extra-long than a standard twin. Twin XL beds are common in college dorm rooms as bunk bed mattresses and are best for tall sleepers.

Full XL Mattress

Full XL size mattresses measure 54 inches by 80 inches—5 inches longer than a standard full bed. This extra length makes it a great option for taller teenagers, single adults, or anyone who enjoys a bit more legroom. While not as common as other mattress sizes, Full XL mattresses can be an excellent choice for smaller bedrooms where a queen bed might feel too large but additional length is still needed for comfort.

Queen Mattress

Queen size mattresses are 60 inches by 80 inches, one of the most popular mattress sizes among single sleepers. Queen size beds provide extra space to stretch out and are a popular mattress for couples.

Queen beds are also great mattresses for guest bedrooms. They can comfortably accommodate visiting while smaller sizes cannot, and a queen bed fits into a smaller bedroom for guests better than a king bed.

Other variations of queen mattresses include:

• Olympic Queen: Slightly wider at 66 inches by 80 inches, ideal for sleepers who want extra width.
• Split Queen: Two separate mattresses measuring 30 inches by 80 inches each, perfect for customized comfort for couples.
• California Queen: Longer than a standard queen at 60 inches by 84 inches, providing extra legroom for taller individuals.
• Short Queen: Commonly used in RVs, measuring 60 inches by 75 inches, designed for compact spaces.

King Mattress

King size mattresses measure 76 inches by 80 inches—the largest standard mattress size. King size beds are best for couples, allowing 38 inches of personal space. Split king sizes (two twin XL beds placed side by side) are also available for customized comfort and support.

California King Mattress

California king size mattresses are 72 inches by 84 inches—the same area as a standard king, except longer and narrower, perfect for taller couples. Split California king options are also available, though not as accessible as a king bed.

Other Things to Consider

Aside from mattress size, you also want to consider mattress firmness and types of mattresses before buying a new bed.

Mattress Firmness

When it comes to choosing the right mattress firmness for your needs, you want to look at what your favorite sleeping position is:

• Mattresses for side sleepers need to offer soft to medium feels.
• Mattresses for back sleepers should have a medium-firm to firm feel.
• Mattresses for stomach sleepers should be firm to minimize sinkage and the spinal misalignment it can cause.
• Mattresses for combination sleepers should be medium to medium-firm to best support different positions.

Mattress Types

There are four main types of mattresses to consider—memory foam, latex, innerspring, and hybrid.

Memory Foam Mattresses

Memory foam mattresses are made of high-density polyurethane foam that conforms to your body shape and provides pressure relief. These mattresses have a reputation for being soft and comfortable, with many people claiming that they sleep better on memory foam mattresses.

Memory foam mattresses are also known for their ability to isolate motion, which means that you won’t feel your partner’s movements while you sleep. One potential downside to memory foam mattresses is that they can retain heat, so if you’re a hot sleeper, you might want to look for a mattress with cooling features.

Latex Mattresses

Latex mattresses are made of natural or synthetic latex and are known for their durability and support. Latex mattresses are often more buoyant than memory foam mattresses and provide a more responsive feel. They are also naturally hypoallergenic and resistant to dust mites and other allergens, making them a good choice for people with allergies.

Organic latex mattresses can be more expensive than other types of mattresses. However, their longevity and comfort may make them worth the investment.

Innerspring Mattresses

Innerspring mattresses are the most traditional type of mattress, made up of a coil support system and a comfort layer of padding on top. These mattresses are known for their bounce and responsiveness, and they are often more affordable than other types of mattresses.

Innerspring mattresses also provide good airflow, which can help regulate temperature while you sleep. However, some people find that innerspring mattresses don’t offer enough support or pressure relief.

Hybrid Mattresses

Hybrid mattresses combine the best features of memory foam, latex, and innerspring mattresses to create a balanced sleep surface. These mattresses typically have a coil support system with a comfort layer of foam or latex on top. Hybrid mattresses can provide the pressure relief of memory foam or latex while still offering the bounce and support of an innerspring mattress.

Hybrids also tend to have good airflow, which can help regulate temperature. Hybrid mattresses can be more expensive than other types of mattresses, but they may offer the best of both worlds when it comes to comfort for some sleepers.

Should you get a twin or full mattress?

Choosing between a Twin and Full bed depends on your space, comfort, and needs. Here’s a quick breakdown:

Why Choose a Twin Mattress?

• Child’s First Bed: Ideal for kids transitioning from a crib to their first big bed.
• Compact Spaces: Perfect for bunk beds or small bedrooms.
• Affordable: A budget-friendly option for single sleepers or smaller rooms.

When to Choose a Twin XL Mattress?

• Tall Kids or Adults: Provides extra length for taller individuals.
• Small Apartments: Fits in tight spaces like studio apartments.
• Temporary Use: Great for dorms, hostels, or short-term stays.

Why Opt for a Full Mattress?

• Solo Adults: Offers more space than a Twin, great for single sleepers who want extra room.
• Growing Kids: Ideal for children who need more space as they grow.
• Post-College: Perfect for your first apartment or small bedroom.

When to Choose a Full XL Mattress?

• Couples: Provides enough space for two, especially if you like to cuddle.
• Tall Individuals: Gives extra legroom compared to a standard Full.
• Limited Space for Larger Beds: Great if you don’t have room for a Queen or King mattress but want more space than a Full.

Ultimately, your choice should depend on room size, budget, and how much space you need to sleep comfortably.

In a survey conducted a few years ago, Twin beds were found to be the second most popular bed size in the U.S., only behind Queen-sized beds. This indicates that Twin beds have long been a favored choice, particularly for single sleepers, children, and those with limited space. 

Their affordability and compact size make them a practical option for many, especially in smaller living spaces such as dorm rooms, apartments, and guest rooms.

On the other hand, Full-sized beds were moderately less popular in the same survey. While Full beds still hold a solid place in the market, especially for individuals who need more room than a Twin but don’t have the space for larger options, they didn’t quite match the widespread appeal of Twin and Queen beds at that time. 

Full beds tend to be favored by those seeking a balance between comfort and space without stepping up to a Queen or King size, but they are often seen as less versatile than the more widely preferred options.

Saving on New Mattresses

You can save on any size of mattress by browsing the year’s big mattress sales:

• Best MLK Day Mattress Sales
• Best Presidents Day Mattress Sales
• Best Sleep Awareness Week Mattress Sales
• Best Memorial Day Mattress Sales
• Best 4th of July Mattress Sales
• Best Labor Day Mattress Sales
• Best Columbus Day Mattress Sales
• Best Black Friday Mattress Sales
• Best Cyber Monday Mattress Sales

Frequently Asked Questions

What is the difference between a single and a twin bed?

A single mattress is also referred to as a toddler bed. It’s slightly larger than a crib mattress, at 30 inches by 75 inches, and as its name suggests, built for toddlers. A twin bed is 38 inches by 75 inches—8 inches wider to fit larger children and teenagers.

Can a full bed fit two people?

Full beds were commonly used by couples up until the 1960s, but queen mattresses rose in popularity, making them a better fit for couples. Since then full size mattresses are considered better for single sleepers. Full size mattresses are also a good option for adults who like to co-sleep with their child or pet.

What is the difference between a twin and a twin XL?

Both a twin and a twin XL mattress have the same width (38 inches), but while a twin size is 75 inches long, a twin XL bed is 80 inches long—5 inches longer. Twin XL beds are excellent choices for taller sleepers who need more legroom to stretch out—they’re also commonly found in college dorm rooms to accommodate any body height.

Is a Twin bed suitable for adults?

A Twin bed can be suitable for adults, especially if you have limited space or are on a budget. It is often used in smaller rooms like apartments, dorms, or guest rooms. A Twin bed provides enough room for a single sleeper, but taller or larger adults might find it too cramped, especially if they prefer more space to move while sleeping. For adults over 6 feet tall, a Twin XL might be a better option, as it provides additional length. A Twin bed is a great option for temporary or short-term use, but it might not offer long-term comfort for larger individuals.

What mattress size is best for a 6-foot-tall person?

For a 6-foot-tall person, a Twin XL (80″ long) or Full XL (80″ long) mattress is the best option. A Standard Twin (75″ long) or Full (75″ long) may leave your feet hanging off the edge, leading to discomfort during sleep. A Twin XL offers 5 extra inches of length, while a Full XL provides both extra length and additional width, making them ideal for taller individuals. If you need more room to spread out, a Queen or King mattress would also work well, especially if you have the space to accommodate them.

Do two Full-sized mattresses equal a Queen bed?

No, two Full-sized mattresses do not equal the size of a Queen bed. A Queen mattress measures 60″ x 80″, whereas two Full beds side by side would total 76″ x 75″. While the two Full mattresses offer more width (76″ compared to 60″), they are 1 inch shorter than a Queen mattress. Additionally, when placing two Fulls together, there would be a gap in the middle, making it less than ideal for sleeping. If you’re looking for a wider bed but don’t have space for a Queen, you might want to consider a King bed, which is 76″ wide and 80″ long.

What is Right for You, Twin or Full Size Mattress?

Whether a Twin or Full mattress is right for you depends on your space, comfort preferences, and budget. If you need a compact bed or are looking for something budget-friendly, a Twin is a great choice, especially for kids or single adults. If you want more space to spread out or need a bed that can accommodate growth, a Full mattress is a better option.

What month should I buy a mattress?

May is often the best month for mattress shopping. New mattress models are usually released in June, so mattresses are discounted in May to clear out stock and make room for the new models. If it’s past May, you can still find good deals by shopping online mattresses or by waiting for the next big sales day.

Which mattress is best for back pain?

Size is usually not a factor when it comes to relieving back pain. The more important considerations are materials and the bed’s firmness. Studies suggest that the best choice is a medium-firmness mattress for back pain.

Is any mattress size between full and twin?

Yes, there is a mattress size between Twin and Full called a Twin XL. A Twin XL mattress measures 38″ x 80″, which is the same width as a Twin but provides an extra 5 inches of length, making it ideal for taller individuals. It’s a great option for people who find a standard Twin too short but don’t have enough room for a Full-sized bed. Twin XL mattresses are commonly used in dorm rooms, hostels, and small apartments where space is limited but extra length is needed for comfort.

How many people can comfortably sleep on a full-sized bed?

A Full bed can typically accommodate one person comfortably, offering ample space for a solo sleeper to stretch out. However, two people can fit on a Full bed, though it will be snug, and there may not be much room for movement. This size is best for couples who don’t mind being close or for those who sleep soundly without needing extra space. For more comfort, couples may prefer a Queen bed, which provides more width. If space is tight, the Full bed is a good balance between size and comfort for one or two people.

Conclusion

Choosing the right bed size is a significant factor in finding the best mattress. The right size accommodates couples and single sleepers while leaving open space for a pleasing aesthetic look for the bedroom. A twin or full mattress may be the best choice for a good night’s sleep.