Mattress Brand Reviews: Basics And Secrets For A Good Sleep

Mattress Sizes And Dimensions

by Taylor Burke June 08, 2022 4 min read

Mattress Sizes And Dimensions

Don’t know how to start exploring the complex world of mattresses? Start with the sizes! This is one of the parameters that influence a lot of things, from the cost of a mattress to the sleep quality itself. 

All the most useful info, including the most common sizes, the largest sizes ever, as well as the things to consider when determining the right mattress size, can be found below. 

Mattress sizes: What to choose?

First, let us take a look at the most common mattress sizes.

Uncommon giant mattress sizes and their dimensions

Above you can see the most common, basic mattress sizes. However, there are a few more options on the market, and despite that they are less popular, you should know about them, especially if you have a big family. Here are the largest (some people call them giant) sizes available: 

Texas King — 80” x 90”, the cost varies from $2,000 to $3,500Wyoming King — 84” x 84”, the cost varies from $1,500 to $3,000Alaskan King — 108” x 108”, the cost varies from $2,500 to $5,000Family King  — 80” x 120”, the cost varies from $2,500 to $5,000Family XL — 84” x 144”, the cost varies from King $2,900 to $5,000

What mattress size do you need?

So, there are many mattress sizes. How can one understand which of them is the right one? In fact, there are a few things every customer should consider before ordering a mattress or purchasing it in the store. Just give yourself honest answers to the five most important questions (you can find them below), and you will easily make the right choice. 

What is the size of the bedroom?

Some mattresses might suit those who want to save some extra space in their room for other furniture or just for themselves. We added this info for a reason, actually. The size of the bedroom is the first and the most important thing to consider when choosing the size of the mattress. Take a look at the list below — these are the min. dimensions for the most common sizes in feet

  • Crib — almost any room
  • Twin — 7 x 10
  • Twin XL — 8 x 10
  • Full — 9 x 9.6
  • Full XL — 9.6 x 10.6
  • Queen — 10 x 10
  • Olympic Queen — 10 x 10
  • King — 12 x 10
  • California King — 12.2 x 11

What is the sleeper’s or sleepers’ body size(s)?

After you measure the bedroom and consider the results, think about the number of sleepers and their body sizes. Do you have a partner, children, a pet? Is at least one of the sleepers tall? How big are they? Just think about your regular morning and try to understand how big your mattress should be. 

Can you afford this mattress?

It is no secret that size is one of the most important factors that influence the cost of the mattress. Let’s consider the example Saatva, one of the most luxurious brands on the market. Its classic queen-size Saatva mattress costs $1,399, the full mattress is $100 cheaper (it costs $1,299 respectively), and the twin size mattress will cost you $799, which is $600 cheaper than a queen mattress from this brand. And again, this is a premium mattress, but the price range demonstrates how the cost varies depending on the size pretty well.

What about the trial period & warranty?

Some may say that you just cannot consider and foresee everything, especially when it comes to making purchases online. That is true, but there is a way to prevent disappointments — look for a mattress with a long trial period. That is how you can understand if your mattress looks good in your bedroom, if all the sleepers feel comfortable, and if you really need a bigger or a smaller option.

How are you going to move your new mattress?

Moving a mattress to the second floor may be tough, moving it if the door is too narrow may be impossible. The only exception is the so-called beds in boxes — foam mattresses that inflate in the room. However, if you want to move your mattress without much difficulty, you should note that you should unpack your new mattress only in the bedroom, otherwise, it will inflate, and it will be as difficult to move as any other mattress. If you don’t want to buy a bed in a box, make sure that the store offers the delivery.


As you can see, it is complicated, but it is not rocket science. 

  • The best sizes for one are twin, twin XL, full, and full XL (the latter may work for two, but it is likely to be tight.)
  • The best sizes for two are variations of queen and king sizes.
  • The best sizes for big families or big people are extra big mattresses like an Alaskan king, Wyoming king, and Family XL.

There are also a few other factors you should consider when choosing the size. They are as follows: 

  • The size of your bedroom
  • The number of sleepers, their body sizes
  • Your budget
  • Trial & warranty
  • Mobility

Consider all this info and choose the right size for you. 

 Frequently Asked Questions

Will a full-size mattress work well for a couple?

 It depends. If you both like hugs and if none of you is an active sleeper, it might work for you, especially if your bedroom is not too large. Otherwise, especially if you are looking for extra space and good motion isolation, it will be too tight.

What is the best mattress size for a couple?

 The standard sizes for couples are queen and king sizes and their variations (Olympic queen, California king, and other).

Can an adult sleep on a Twin mattress?

 Yes, if he or she is 6 feet tall or shorter. Otherwise, a sleeper needs a larger bed. 

What mattress size should I choose for a 10x10 room?

A queen mattress might be a perfect option for such a bedroom.  

What is the biggest mattress size?

 It is Alaskan King (108” x 108”) or even more rare Family XL mattress (84” or 144”).

What is the difference between Twin and Twin XL mattresses?

 Twin XL is 5” longer, and that’s why it is a much better option for taller sleepers. 

Is there a difference between Full and Double mattress?

No, there is no difference between them. These are just two names for mattresses with the same dimensions.