Twin vs Full

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Written by: Alex Savy
Read 7 minLast updated on November 26, 2022

A Twin-size bed, also known as Single, is the smallest standard mattress size on the market designed for a solo sleeper. The Full size, which is often referred to as Double, is wider and, unlike Twin, can accommodate two sleepers.

However, it’s not the only difference between these mattress sizes. And if you want a more detailed Twin vs Full mattress comparison that will help you make the right choice, then continue reading!

Twin vs Full: Differences and Similarities

twin vs full

Even though Twin and Full seem totally different they actually have quite a lot of similarities!

Seems unbelievable, right?

Well, see it for yourself:

  • Twin and Full aren’t the most common mattress sizes. When Queen and King beds claimed the market in the late ‘50s, the share of Singles and Doubles significantly dropped. According to a 2018 industry report, the percentage of shipped mattresses in the US was 17.2% for Twin and 14.8% for Full beds. In 2010, the numbers were 24.7% and 18%, respectively (1).
  • They both have the same length. A Twin mattress measures 38” x 75”, whereas a Full bed is 16 inches wider and measures 54” x 75”.
  • Both have an XL option. If you need a mattress for a taller individual, then extra-long versions of Twin and Full mattress are at your service. They’ve got extra five inches in length, so you can use that space to get comfy.
  • Both are on the cheaper side. Since Singles and Doubles require fewer resources to be made, they usually are more affordable than other sizes.
  • Both have nearly the same weight capacity. Although Twin and Full mattresses vary in surface area, they both have roughly the same weight limit and can support up to 400 lbs. It means that they can easily hold one overweight sleeper or a couple of average 200-lbs sleepers.

“A possible origin of the word ‘Twin’ in the mattress size name may be the fact that these mattresses often were sold in pairs as a solution for furnishing children’s or guest rooms.”

Now, let’s take a look at the differences.

twin vs full mattress differences

The main one, of course, is that a 38-inch wide Twin mattress will only fit one sleeper, whereas a 54-inch wide Full one can provide enough space to accommodate two adults.

But here’s the trick: 

Full, while being wider than Twin, actually offers less space per person! You will get only 27” if you share a Full bed with your partner, but when sleeping on a Twin mattress alone, you will have 38” at your disposal.

Mattress Weight

Twin and Full mattresses have a significant difference in dimensions, but they’re not that different when it comes to weight.

The average weight of a Twin-sized mattress ranges from 40 to 50 pounds, depending on its thickness. A Full-size mattress weighs 50-60 pounds, which is only 10 pounds heavier. And if you compare a Twin mattress that is on the thicker size and a thinner Full mattress, the chances are that they will have roughly the same weight.

Recommended Room Size

When trying to choose an appropriate mattress size, you should consider not only your personal preferences and body type. The room size plays a role here as well. After all, you will need enough space to place your mattress and to move around it freely.

Now, the recommended room size for a Twin mattress is 7 feet by 10 feet. That’s why a Twin bed would work great for a dorm room, a smaller kid’s bedroom, or even a cozy guest room. And while this mattress size can accommodate only one sleeper, you cannot deny how convenient its compactness can be in smaller living spaces.

As for the Full size, it should be placed in a room that is at least 10 by 10 feet. A Full bed can be a good solution for smaller apartments and bedrooms. It’s a great option for solo sleepers who want a bit more legroom. Overall, a Full mattress size is a nice compromise between compactness and extra sleeping space. I mean, it might even be enough for a couple (if they aren’t too large and like to cuddle).

Who Will Benefit from a Twin Mattress?

A Twin mattress had been the standard for a single sleeper until Queen beds took over the market and even solo users started buying larger beds. 

But who buys Twin beds today? 

Let’s see:

  • Those who look for a kid’s mattress. The Twin size can offer enough space for a kid until they reach the teen age. Also, Singles are commonly used in trundle beds or bunk beds, which, again, make a good fit for kids’ rooms.
  • Those with limited space. If you have extremely limited space that won’t allow you to enjoy a larger bed, Twin can be your only solution for sleeping. 
  • Those who are tight on a budget. Single is the cheapest mattress size out there, so if you don’t need to share a bed with anyone, you don’t have to spend more money on a larger mattress.

“Bedding and accessories for a Twin mattress are also affordable, which makes this size even more cost-efficient.”

Who Will Benefit from a Full Mattress?

Now, when comparing Full vs Twin, we’re assuming that you aren’t looking for a regular sleeping spot for a couple. Because otherwise, Full would without saying be your only option. 

But here are some other scenarios in which it would be better to size up and get a Full mattress for your bedroom:

  • If you’re a heavy single sleeper. Large users may feel too cramped on a Single-size bed and need more room to turn around and get comfy. A Full bed can offer you an extra 16 inches of width, so it’s advisable to opt for this size.
  • If you’re looking for a guest bed. Couples who need a regular spot for sleeping typically opt for a Queen mattress, but if you only need the mattress occasionally, the Full size can make a good choice for your guest room and won’t force you to spend too much money.
  • If you need a bed for a teenager. A teen usually needs more space to get comfy on the bed. Plus, they are likely to use their bed for other activities, such as studying or leisure time, so the extra width would come in handy.

Hopefully, that’s enough information to help you understand which mattress size suits your needs better? If you have already made up your mind, feel free to share in the comments below.


Which is larger: Full or Twin?

Full is larger. A Full bed measures 54” x 75”, whereas a Twin one is 38” x 75”.

How much bigger is Full than Twin?

Full is 16” wider than Twin, but their length is the same.


  1. Alia Hoyt (2019, May 29). Bed Sizes Are Totally Getting Bigger. Retrieved from

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