Alaskan King Bed – Sizes, Dimensions

7 min read
7 min read
Alaskan King Bed Mattress Size Comparison Illustration

In this article

As the name suggests, the Alaskan King Bed happens to be the “king” of all mattresses. The giant bed got its name after the largest state in America – Alaska. 

But the question appears, why would anyone need a bed as big as Alaskan King? Isn’t the King size or California King size bed big enough? 

Well, they are (for most people). But, believe us when we say that an oversized bed can sometimes be a game-changing addition to your room, especially for co-sleeping families and overly tall individuals. 

Keep on reading to discover all things Alaskan king bed and understand how it differs from other giant bed sizes. To know more about quality sleep, beds, mattress guide and dimensions, click here to explore the slumberous world of Sleep Authority.

What Is an Alaskan King Bed?

Alaskan King bed is the biggest bed size amongst all commercially made beds, which means an Alaskan king size bed happens to dwarf all the rest of the existing bed sizes available in the market!

However, it has not always been like that. It was only after the 1960s that bigger bed sizes like the king and California king started getting standardized. As people’s homes and rooms grew, the demand for ultra-large beds also hiked. And that’s how the Alaskan king bed size came into the picture.

How Big Is An Alaskan King Bed Mattress?

You might be wondering– “How big is an Alaskan king bed mattress exactly?” 

This monster measures about 9 feet by 9 feet, meaning 108 inches by 108 inches! Needless to say, this makes it the biggest mattress size one can ever buy. Think about it this way – an Alaskan king bed mattress can accommodate four grown-ups comfortably while still leaving enough space for a doggo! It’s that big!

What Are the Benefits Of Alaskan King Bed?

Below, we list a few benefits of Alaskan king beds:

  • Allows co-sleeping 

These gigantic beds are brilliant for families who practice some kind of co-sleeping arrangement. Co-sleeping promotes restorative sleep cycles, but it also helps working parents reconnect with their babies. Also, sleep-sharing makes it easier for parents to respond to their babies if they need something in the middle of the night. 

  • Your go-to fun place

Imagine having a huge centralized and comfy place for your family to spend their best time! Be it gossip sessions, storytimes, cousins’ nights, movie nights, or playing cards together – the Alaska king bed can be your go-to place for all the fun times. 

  • More space for couples

Couples who move a lot at night, plus-sized couples, those who enjoy more personal space, and those who do not like motion transfer – all can have access to sufficient space in an Alaskan king bed. 

  • Easily accommodates pets

As a pet owner, you cannot predict when your four-legged friend will come and start cuddling over. The Alaskan king bed dimensions will allow you to enjoy a sound sleep with your pets.

Things to Consider When Buying an Alaskan King Bed

Before you go ahead and buy an Alaskan king bed, don’t forget to consider the following things:

  • Accessibility

Alaskan King Bed Room Layout Comparison Illustration

Your room must be spacious enough to lodge an Alaskan king mattress conveniently. Introducing these mattresses in rooms measuring less than 16 feet by 16 feet will block space and make it difficult to move around. So, keep in mind the Alaskan king bed measurements. 

  • Bed frame

An Alaskan king bed is not your regular bed. Hence, you will not easily find a ready-made Alaskan king bed frame or foundation. Therefore, it is advisable to plan a custom foundation or bed frame to avoid misfits.

  • Mattress type

As with any other mattress size, you need to decide which mattress material is best suited for you before purchasing. For instance, if you plan to sleep on your bed daily, you’ll want a more comfortable and supportive material. On the flip side, if you wish to convert your basement into a lounge area, a cheaper foam variant might do the trick. 

  • Budget

Make sure you consider your budget because different Alaskan king beds cost you differently. Depending on their thicknesses and quality, the Alaskan king bed mattress prices vary distinctly (by thousands of dollars).

Giant Mattresses Comparison Chart

Let us now compare the dimensions of the three most popular giant mattress sizes via this Alaskan king bed size chart:

Alaskan King
Wyoming King
Texas King
Width (inches)
Length (inches)
Width (cm)
Length (cm)

Have a look at the Alaskan king bed comparison below with the other two giant bed sizes:

Alaskan King – Pros and Cons 

The pros and cons of an Alaskan king bed are listed here: 


  • Largest oversized mattress; spacious enough for accommodating co-sleeping families. 
  • Suitable for extra-tall sleepers – up to 7 feet in height. 
  • Best suited for plus-sized couples who like having their personal space while sleeping. 
  • A perfect choice for extra-large master bedrooms. 


  • Most pricey oversized mattress. 
  • Needs abundant space. 

Other Giant Mattress Options

If you are looking forward to buying a giant mattress, know that the Alaskan king is not the only option. You can also go for a Wyoming king bed (also known as an emperor size bed), Texas king bed, and Alberta king bed mattresses. Even though nothing is bigger than the Alaskan king bed mattress, they are all over large to be categorized as standard mattress sizes. 

Wyoming King – Pros and Cons

Here are the pros and cons of a Wyoming king bed:


  • The best option for smaller families who prefer sleeping together. 
  • An ideal choice for taller couples who need significant space – both lengthwise and widthwise. 


  • Do not fit inside smaller bedrooms. 
  • Costlier than standard mattress sizes. 

Texas King – Pros and Cons


The pros and Cons of a Texas king bed are as follows:


  • Works well for tall single sleepers who do not mind the (comparatively) lesser width. 
  • An appropriate choice for narrow bedrooms. 
  • Sufficient space for two adults plus one or two children. 


  • Narrower than other oversized mattresses. 
  • Co-sleeping with more than two small kids might feel cramped.

Other Giant Bed Sizes

Two other commonly preferred giant bed sizes are – California kings and double kings. Below, we compare them both with the Alaskan king:

Alaskan King Bed vs California King Bed 

The most significant difference between an Alaskan king bed and a California king is – that while the former is the largest bed size ever created in the history of beds, the latter is the largest amongst all standard bed sizes. 

The Alaskan king bed measures about 108 inches by 108 inches. However, the California king measures 72 inches by 84 inches. So the major difference between an Alaskan king bed vs California king is that an Alaskan king has sufficient space for an entire family. In contrast, the California king is suitable only for taller couples. 

Alaskan King Bed vs Double King Bed 

A double king mattress is essentially the widest of all mattress sizes. With dimensions of 152 inches by 80 inches, it surpasses the Alaskan king considerably in terms of its width. So basically, a double king bed is 44 inches wider and 28 inches shorter than the Alaskan king. Remember, you need to have an exceptionally wide space to fit this one inside your room.


All in all, an Alaskan king bed could sometimes be precisely what your huge bedroom needs. So if you are planning to go for a king size bed, hold on! Maybe you and your family can benefit more from an Alaskan king bed vs a king bed. Give it a thought!

The question “Where to buy an Alaskan king bed?” will pop up as soon as you make up your mind to go for an Alaskan king. Let us tell you; it’s not gonna be as simple as buying your regular mattress sizes. Most brick-and-mortar retailers do not sell these. You will probably find them at specialty retailers, boutiques, and companies that sell custom-made beds online. 

We hope that our guide answers all your queries and helps you decide on your best mattress!

Since the Alaskan king bed is huge in size, it is mostly available at a relatively higher price than most other beds. You can find one between $2000 and $7000. The price would vary depending on the headboard, sheet, protector,, and foundation.

Oversized mattresses and accessories are not common to find. Not necessarily you’d find it in your city. They are only available at specialty stores and on a few websites online.

A standard king bed measures 76 inches in width and 80 inches in length. A standard queen bed measures 60 inches in width and 80 inches in length, and a standard full bed measures 54 inches in width and 75 inches in length.

The Alaskan bed that measures 108 by 108 inches is considered to be the biggest bed size available on the market. The family bed that measures 144 inches in width is known to be the widest of all. However, it is only 84 inches in length.

An Alaskan bed is bigger than a California king bed, making it more suitable for big families. The two have a difference of 36 in width and 24 inches in length. This is because an Alaskan bed measures 108 by 108 inches. However, a California king bed measures only 72 inches by 84 inches.

Most couples prefer sleeping on a queen size bed as it offers them a perfect blend of intimacy and comfort. However, couples who prefer more space and comfort prefer to go for a king size bed.

A double king bed implies two king beds (76 by 80 inches each) placed side by side. A double king bed measures 152 inches in width and 80 inches in length. It can also be achieved by placing four twin XL beds together.


The Log position, in which a person sleeps on their back with arms tucked into their sides, is considered the least common sleeping position.

Take a Sleep Quiz

Find out if a memory foam, hybrid, or latex mattress is the right mattress choice for you.


Disclaimer is brought to you by Resident. Our company sells Nectar, DreamCloud, Awara, Level Sleep, and Home Well Designed. While we intend for this site to be an educational and useful resource for consumers interested in sleep-related topics, we also promote our family of brands – brands that we believe in – on this website. Where we have commissioned independent research and/or articles to support our content, we will state as such in the sub-heading of the article. Where we compare our brands and products against others, we will provide the review criteria as well as state our basis for choosing the “best” or “top” product in a link accompanying the comparison. Our aim is to assist consumers in choosing the best solution for getting restful and comfortable sleep and it is our belief that there is a Resident product that meets any sleeper’s needs.

Meet Our Review Board

Each week our team researches, writes and collaborates with industry leaders to bring you simple easy-to-read sleep information.

David Bridge

Sleep Coach

Siddhesh Tiwatne

Sleep Coach

Authored by health experts and journalists

Fact checked and science-backed

Medically reviewed by physicians

Meet Our Review Board

Each week our team researches, writes and collaborates with industry leaders to bring you simple easy-to-read sleep information.

David Bridge

Sleep Coach

Siddhesh Tiwatne

Sleep Coach

Authored by health experts and journalists

Fact checked and science-backed

Medically reviewed by physicians