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Alaskan King Mattress Size Comparison and Shopping Guide (2024)


Lindsey S.
May 20, 2024

When it comes to finding the perfect mattress, size matters. For those seeking maximum space to sprawl out in their sleep, the Alaskan king mattress stands out as a luxurious choice. In this comprehensive guide, we'll delve into what makes Alaskan king beds special, compare their dimensions to other mattress sizes, and provide shopping tips to find the best model for your needs.

What Is an Alaskan King Bed?

The Alaskan king mattress—aptly named after the largest U.S. state—is the biggest mattress size you can buy without customization. An Alaskan king bed measures 108 inches wide by 108 inches long or 9 feet by 9 feet. They offer an impressive 11,664 square inches of sleep surface area. Other oversized mattress options include the Wyoming king, Texas king, and Alberta king, but the Alaskan king is the largest.

Alaskan King Mattress Dimensions & Comparison

If you’ve never encountered an Alaskan king mattress, it may be hard to visualize its expansive dimensions. Use the charts below to envision the scale of an Alaskan king bed, compare it to your current mattress size, and determine if it'll fit your bedroom's parameters.

Standard Mattress Dimensions Chart



Twin XL



California King
















Surface Area

2,812 sq. in.

3,040 sq. in.

3,975 sq. in

4,800 sq. in.

6,048 sq. in.

6,080 sq. in.

Min. Recommended Room Size

7’ x 9’

7’ x 10’

10’ x 9’

11’ x 10’

12’ x 12’

13’ x 12’

Oversized Mattress Dimensions Chart


Wyoming King

Texas King

Alberta King

Alaskan King











Surface Area

7,056 sq. in.

7,840 sq. in.

9,216 sq. in.

11,664 sq. in.

Min. Recommended Room Size

14’ x 14’

12’ x 14’

14’ x 14’

15’ x 15’

Pros and Cons of Alaskan King Mattresses

Given its grandeur, an Alaskan king bed is a luxurious choice. However, there are a few drawbacks to consider before purchasing a mattress this massive. Anyone interested in an Alaskan king should weigh these pros and cons to make an informed decision about a mattress size upgrade.


  • Personal Space: An Alaskan king bed affords maximum sleep space. You’ll have plenty of room to sprawl out, get comfortable, and enjoy unrestricted rest.

  • Minimizes Sleep Interruptions: Alaskan kings make bed-sharing easy. With room to spread out, your partner’s movements won’t disrupt your REM.

  • Room for Co-Sleeping: Need a family bed suited for co-sleeping with children or pets? Alaskan kings fit the bill, offering ample space for parents, young kids, and beloved pets to share a bed for connection and comfort.

  • Luxury Look and Feel: An Alaskan king bed automatically elevates your bedroom aesthetic. It’s also the perfect canvas for decorating with a stylish bed frame, bedding textures, and a creative pillow stack.


  • Price: By nature, bigger beds cost more. When considering the costs, remember that you’ll also need an Alaskan king size bed frame and bedding for your new mattress.

  • Large Bedroom Required: Alaskan king beds take up considerable space. Grab a measuring tape to assess your bedroom’s size and how a 9-foot-by-9-foot bed would fit with your other furniture and walkways.

  • Difficult to Move: Once you set up your Alaskan king mattress and base, they are challenging to relocate due to their size and weight. Moving your bed will require some logistical planning and heavy lifting.

Introducing the Luxe Alaskan King Mattress

Alaskan king size mattress by Nolah

Looking for the best Alaskan king mattress you buy online? Nolah has your back! Our NEW Luxe Alaskan King Mattress is a premium hybrid bed with pressure-relieving foam, deeply supportive coils, and active cooling components for year-round comfort.

✓ FREE shipping ✓ Detailed instructions for easy assembly

✓ 120-night sleep trial ✓ Lifetime warranty

What You Need to Know Before Buying an Alaskan King Bed

We understand that an Alaskan king sleep setup is a big investment. Before adding a giant mattress to your online cart, carefully consider each factor below.

Required Room Size

If you’re interested in an Alaskan king bed, you first need to determine if you have enough room. To comfortably accommodate the bed, additional bedroom furniture, and walkways, you’ll need about 15 feet by 15 feet of space or more.


How do you plan to use your oversized mattress? Alaskan kings make the ideal family bed for co-sleepers and pet owners. Two adults plus three to four children or pets can all fit on this giant bed.

Mattress Construction

Oversized mattresses may not be as common as the standard twin through California king sizes, but you’ll still have a handful of brands of models to choose from. To find your ideal fit, look closely at each model’s materials, layer count, firmness feel, and additional features while comparing your options.

Mattress Types and Materials

Our Mattress Material Guide unpacks the most popular mattress types on the market: foam, latex, hybrids, and innerspring. When it comes to Alaskan king size mattresses, we strongly recommend hybrid builds for optimal comfort, support, and durability. Hybrid mattresses combine a coil core with foam upper layers to provide structural strength and pressure relief, which is exactly what you need for a long-lasting Alaskan king bed.

Firmness Level

Regardless of the mattress size you choose, identifying the ideal firmness level for your sleep position, weight, and contouring preferences is essential for finding a comfortable fit that properly supports your spine. Head over to our Mattress Firmness Guide for help deciding between a plush mattress, a firm mattress, or something in the middle.

Additional Features to Compare or Consider

  • Cooling qualities

  • Edge support

  • Motion isolation

  • Mattress height

  • Environmental and safety certifications


How much does an Alaskan king bed cost? On average, an Alaskan king mattress costs $5,800 if you order online.* Shop at Nolah and save! Click here to see the current deal on our Luxe Alaskan King Mattress.

Shipping and Logistics

At this point, you’re likely wondering: how do you transport and set up a bed this big? We can’t speak for other oversized mattress brands, but here’s how it works when you order an Alaskan king at Nolah.

We ship our Luxe Alaskan King Mattress FREE via FedEx in three compact boxes. Each parcel contains compressed components that you unpack and assemble into one luxurious mattress. You’ll receive easy-to-follow instructions and the following pieces: four mattress cores, one foam attachment, and one mattress shell. You’ll need two people to set up the mattress, but it’s quick and easy. Your bed will be sleep-ready after you let it expand for a few hours.

Alaskan King Bed Frames, Bedding, and Accessories

Don’t forget! If you’re changing mattress sizes, you’ll need a new foundation. Look for a base specifically made for an Alaskan king size mattress (108 inches wide by 108 inches long). We recommend a platform or slatted base design for maximum durability.

You’ll also need Alaskan king size bedding, like a sheet set and comforter or duvet. A mattress protector isn’t required but will go a long way to keep your mattress clean and safe.


With their staggering dimensions, Alaskan king beds redefine sleep luxury and personal space. For mattress shoppers with the bedroom space and budget, Alaskan kings offer uncompromising comfort that couples, parents, kids, and pets can all enjoy. If you’ve decided that an Alaskan king bed best suits your needs, shop our Luxe Alaskan King Mattress now and get ready for the ultimate sleep upgrade!

Frequently Asked Questions

About Alaskan King Size Beds

*To find the average price for an Alaskan king mattress, we compiled non-sale price data on 11 models from select U.S. and Canadian online mattress brands. Prices were recorded on 1/3/24.

Disclaimer: Nolah does not provide medical advice. All resources on the Nolah blog, including this article, are informational only and do not replace professional medical counsel. Talk to your doctor about any health, mental health, or sleep-related issues.

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