Alaskan King Bed
The Complete Size Guide – Dimensions, Sellers & What You Need to Know
The Alaskan King is the largest standard oversized mattress at 9 feet by 9 feet (108" x 108"). With 81 square feet of sleeping surface, it's nearly twice the size of a standard King bed.
Who It's For
- Co-sleeping families with multiple children
- Couples with large pets
- Anyone who wants maximum sleeping space
Room Requirements
Measure your bedroom before ordering. Allow at least 2-3 feet on each side of the bed for walking space, plus room for nightstands and other furniture.
Pros and Cons
Pros
- ✓Largest standard size available
- ✓Fits 2 adults + 2-3 children comfortably
- ✓Square shape means no 'wrong' orientation
- ✓Perfect for co-sleeping families
Cons
- ✗Requires very large bedroom
- ✗Limited frame and bedding options
- ✗Difficult to move (often 200+ lbs)
- ✗Premium pricing ($3,000-$7,000+)
Where to Buy Alaskan King Beds
Last verified: February 2026
8 sellers currently offer Alaskan King beds. Most oversized beds are made-to-order and ship directly from the manufacturer.
| Seller | Price Range | |
|---|---|---|
Big Mattress Co. MattressFrameBedding | $2,000 - $5,000 | Visit |
OCOCHI Bedding | $1,500 - $4,000 | Visit |
Mattress Insider MattressFrameBedding | $2,000 - $4,500 | Visit |
Nolah Sleep MattressFoundation | $2,500 - $4,000 | Visit |
Engineered Sleep MattressFoundation | $3,200 - $6,000 | Visit |
Custom Mattress Factory MattressFrameBedding | $2,000 - $5,500 | Visit |
Sleep Boutique / Von Viva MattressFoundation | $3,700 - $8,000 | Visit |
AdultBunkBeds.com FrameMattress | $2,000 - $8,000 | Visit |
Featured: Engineered Sleep
4th generation mattress makers - handcrafted in the USA since 1931. Use code BIGBED15 for 15% off.
Common Mistakes When Buying an Alaskan King
Ordering standard King accessories
This is the most common and most expensive mistake. Standard King sheets (76" × 80"), comforters, mattress protectors, and bed skirts are all far too small for a 108" × 108" Alaskan King. You need bedding specifically sized for this bed. See our Alaskan King sheets guide for what's available.
Underestimating room size requirements
An Alaskan King takes up 81 square feet – 56% of a 12×12 room. We recommend a minimum 14×14 room. See our room size guide for detailed layouts at each room size.
Forgetting about doorway and stair clearance
Your bedroom might be big enough, but can you get the mattress there? Standard doorways are 32–36 inches wide. Most Alaskan King mattresses ship in 2–3 modular sections to solve this, but always confirm with your seller before ordering. Our moving guide covers this in detail.
Not checking return policies
Most oversized beds are custom-made and non-returnable. Only Big Mattress Co. (100-night trial) and Nolah Sleep (120-night trial) offer sleep trials on Alaskan King mattresses. If trying before committing is important to you, start with one of these sellers.
Ignoring total cost
The mattress is only part of the expense. Budget for the frame ($1,000–$3,000), sheets ($80–$400), comforter ($200–$500), and potentially white-glove delivery ($200–$600). Our full cost breakdown has the details.
Alaskan King Bedding Availability
Finding bedding for a 108" × 108" bed isn't like shopping for a standard King. Here's what's easy and what's harder to find:
Easy to find
- ✓Fitted sheet sets – available from OCOCHI, Alaskan King Bed Co., Mattress Insider, and Big Mattress Co. Multiple material options (cotton, bamboo, microfiber). Prices: $80–$400.
- ✓Mattress protectors – available from OCOCHI and Alaskan King Bed Co. Essential for protecting a $2,500+ mattress.
- ✓Comforters/duvets – available from OCOCHI, Alaskan King Bed Co., and Big Mattress Co. See our Alaskan King comforter page.
Harder to find
- ✗Weighted blankets in Alaskan King size – very limited availability
- ✗Decorative pillowcases and shams in matching sets – most sellers carry only basics
- ✗Bed skirts for 108" × 108" – uncommon; most owners use platform frames
- ✗Heated blankets or electric mattress pads – not currently available
For a complete guide to sheets, materials, and budget options, see our Alaskan King sheets buying guide.
Frequently Asked Questions
How big is an Alaskan King bed?
An Alaskan King bed measures 108 inches by 108 inches (9 feet x 9 feet), providing 81 square feet of sleeping surface. It's the largest standard mattress size available.
What size room do I need for an Alaskan King bed?
You'll need at least a 12' x 12' room, but 14' x 14' or larger is recommended to allow for walking space, nightstands, and other furniture.
How much does an Alaskan King bed cost?
Alaskan King mattresses typically range from $2,500 to $7,000+ depending on materials and brand. Frames add another $1,000-$3,000. Budget $4,000-$10,000 for a complete setup.
Can you find sheets for an Alaskan King bed?
Yes, but options are limited. Most oversized bed manufacturers sell matching sheets. Expect to pay $150-$400 for a quality Alaskan King sheet set.
How do you move an Alaskan King mattress?
Most Alaskan King mattresses are modular (2-3 pieces that zip together) or can be folded for moving. This makes them easier to navigate through doorways and stairs than their size suggests.