Detailed Mattress Comparison

Full size mattresses, also known as double beds, are bigger than twin size mattresses. While both sizes are 75 inches long, the main difference between a full and twin mattress is the width. A full size mattress is the same length as a twin mattress but is 16 inches wider. A full bed is 54 inches wide and a twin mattress is 38 inches wide. This makes full size beds popular among adults who sleep alone or share their bed with a child or a pet.

 In this post, we discuss the pros and cons of each size while listing all the parameters that can help you make the right choice.

ParametersFull MattressTwin Mattress
Size
IN:54” x 75” x 11”
FT:4.5 X 6.25 X 0.92
CM:137.16 X 190.5 X 27.94
IN:38” x 75” x 11”
FT:3.25 X 6.25 X 0.92
CM:99 X 190.5 X 27.94
Price$899$699
Bed Size54 in × 75 in38 in × 75 in
Recommended Room size10 × 1210 × 10
Comfortably Fits
  • Single Sleepers
  • Parent sleeping with a child or a pet
  • Teenagers
  • Kids
  • Young adutls
Twin vs Full Mattress Comparison with Dimensions

What is a Twin Size Mattress?

Standard twin mattresses are 38 inches wide and 75-inches long and are the least expensive mattresses available in the market after the crib mattress. Twin mattress, a term coined by Americans in the 1920s for single beds, is best suited for hostellers, single sleepers, and children because they are small and easy to move around. Two twin size mattresses can also be combined to form a large bed if your kids have a sleepover or you have guests visiting.

Pros

  • Ideal for growing kids
  • Easy to move around
  • Can be used on a bunk bed
  • Cheapest mattress size available

Cons

  • Cannot accommodate couples
  • Not comfortable for adults
Twin vs Full Mattress

What is a Full Size Mattress?

Standard full mattresses at 54 by 75 inches are 1.5 times or 38 inches wider than twin mattresses. It works well for single adults or single sleepers but can be uncomfortable for couples. A full size mattress allows only about 27 inches for each person, and for many couples that’s not enough space. You can share a full size mattress with a child or a pet as it can fit a single adult with some room to spare.

Pros

  • Recommended for kids or guest bedroom
  • More space than a twin 
  • Fits well in studio apartments

Cons

  • Heavier and larger than a twin mattress
  • Maybe too small for couples

Things to Consider Before Deciding between Full Bed vs Twin Bed

Room Size

Full size mattresses fit well in rooms that are at least 10 by 10 feet. Because they are bigger than twin beds, they are a great option for guest rooms or a small bedroom (a master bedroom may require a bigger bed).

  For twin size mattresses, a room should at least be 7 by 10 feet. A twin mattress is 6.25 feet in length, making it an excellent fit for a kids room, bunk beds, or shared hostel rooms. 

Accessories

Accessorizing both the beds, whether with pillows or covers and duvets is easy as twin and full beds are both popular sizes. For a full-size mattress, you will need bigger sheets and at least two pillows which makes it slightly more expensive to accessorize compared to a twin mattress. A twin mattress can be accessorised with a single pillow and a smaller bed cover making it slightly easier on the pocket.

Budget

Full beds will cost you more than a twin bed because they are bigger. Full beds can cost around $200 more than twin mattresses (depending on the brand you choose). While a twin bed may be ideal for your teen, note that he/she will outgrow a twin mattress very quickly, especially if he/she is tall. 

Bed Size

An important consideration before you purchase a mattress is the size of the bed you have. A twin size mattress fits a bunk bed, a single bed, or any bed which is at least 36 by 75 inches. A bigger bed may make lying down and getting up awkward as you may have to scoot over the extra space on the bed. 

A full size mattress requires a bed that is at least 54 by 75 inches. Anything smaller and the mattress can hang from the sides and perhaps lead to unwanted falls or accidents. You may search for a double bed or a full bed in the market as they are two different names for the same size. 

Height

If you are under 6 feet 2 inches, both twin and full mattresses work well. However, Full-size mattresses are broader than twin size mattresses and are more comfortable for taller individuals because they have more surface area and more sleeping space. However, twin and full mattresses are both 75 inches long, so it doesn’t solve the problem for people taller than 6 feet 2 inches. Check out other sizes such as queen or king size mattresses for such cases. 


More on Mattress Sizes


Choosing Between Twin vs Full

Single sleepers or adults should opt for the full size mattress as it has ample space to sleep comfortably. If you are looking to buy a bed for your child or growing teen, a twin bed is a least expensive option. Twin size beds are also easier to move around the house and fit well in small rooms.

In the twin vs full bed debate make sure you keep the above factors in mind before making your decision.

How we compare to other Brands?

We offer a 365-day trial period and a warranty that lasts forever! If you don’t believe us go ahead and compare our offer to other brands. Apart from being one of the largest mattress sellers in the United States, we give you 9 reasons why nectar may be your best and the last mattress you purchase.

Sleep Trial Warranty Free Shipping * Free Return 2 Free Pillows Free Sheets Free Mattress Protector Price (Queen) Total Price
Nectar 365 Nights Forever Warranty™ check check check check check $799 $799 Shop Mattress
Casper 100 Nights 10 Years check check $178 $139 $95 $1,095 *$1,507+
Purple 100 Nights 10 Years check check $196 check $99 $1,149 *$1,444+
Shop Mattress *Price reflects the subtotal of mattress protector, sheets and two pillows (Single pillow for twin/twinxl) compared to the current promotion on Nectar. Additional shipping fees may apply in AK and HI. Price may not reflect any current promotions or discounts. Last Updated: Mar 2021.

Get upto $399 in Accessories Today

So long sleepless nights!

FAQs

What is the difference between a twin and a full mattress?

Twin and full mattresses are equal in length. However, a mattress for a full size bed is 16 inches wider than a twin mattress. The former is more suitable for children and growing teenagers, whereas the latter is perfect for taller teenagers and young adults sleeping alone.

Is a full mattress enough for couples?

Twin and full mattresses are equal in length. However, a mattress for a full size bed is 16 inches wider than a twin mattress. The former is more suitable for children and growing teenagers, whereas the latter is perfect for taller teenagers and young adults sleeping alone.

Is a twin mattress too small for an adult?

Twin and full mattresses are equal in length. However, a mattress for a full size bed is 16 inches wider than a twin mattress. The former is more suitable for children and growing teenagers, whereas the latter is perfect for taller teenagers and young adults sleeping alone.

What is the best mattress size for me?

Take into consideration the size of your bedroom, how much space you need around the bed and the furniture in your room. Because there are many standard mattress sizes, keep in mind personal comfort and whether you wish to share your space with another person or a pet. A queen size mattress or any size bigger than a queen size such as King or Cal king is good for couples or two people. Anything smaller than 60 x 80 inches, such as a full or twin XL bed is better suited for single sleepers.

What are two twin beds equal to?

Two twin beds put together are 78 inches wide and 75 inches long which is just short of a king bed which is 80 inches long. If you are looking to combine mattresses to form a king bed for your master or primary bedroom then consider combining two Twin XL mattresses. Twin XL mattresses are 5 inches longer than Twin beds giving you that extra few inches of space.