Alaskan King, Wyoming King & Texas King
Oversized bed sizes, room fit, comparisons, and where to buy
You came here because the standard king ran out of room. Maybe a toddler turns sideways across it every night. Maybe one of you is six foot ten. Maybe two adults, three kids, and the dog all sleep together and you're tired of doing the math on the edge.
Three sizes solve this in different ways. Alaskan King at 108 by 108 inches goes square. Wyoming King at 84 by 84 inches keeps the floor space manageable while adding width where it counts. Texas King at 80 by 98 inches takes the standard-king width and stretches it 18 inches longer.
Pick a size to start, or jump straight to the vendor comparison.
Oversized Bed Sizes
Alaskan King
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.
Wyoming King
The Wyoming King is a 7-foot by 7-foot (84" x 84") square mattress that offers significantly more space than a California King while fitting in more bedrooms than an Alaskan King.
Texas King
The Texas King is a rectangular oversized mattress measuring 80" wide by 98" long. It's the same width as a standard King but 18 inches longer, making it ideal for tall sleepers who need extra length.
Size Comparison at a Glance
| Size | Dimensions | Square Feet |
|---|---|---|
| Alaskan King | 108" × 108" | 81 sq ft |
| Wyoming King | 84" × 84" | 49 sq ft |
| Texas King | 80" × 98" | 54.4 sq ft |
Where to Buy Oversized Beds
Verified sellers specializing in oversized mattresses, frames, and bedding. Most offer direct shipping throughout the US.
Engineered Sleep
VerifiedModular mattress system with interchangeable comfort layers. Choose different firmness on each side.
Big Mattress Co.
Full-service oversized bed retailer offering mattresses, frames, and bedding with 100-night sleep trials.
Mattress Insider
Custom mattress manufacturer offering any size. Ships mattresses in zip-together sections for easy delivery.
Custom Mattress Factory
US-made oversized mattresses handcrafted to order. Runs AlaskanKingBeds.com and WyomingKingBeds.com.
Guides & Resources
Everything you need to know about buying, moving, and setting up an oversized bed.
Biggest Bed Size Guide
Compare all oversized beds from Wyoming King to Family Bed XL.
Alaskan King Bed Price
Full cost breakdown: mattress, frame, bedding, and delivery.
Engineered Sleep Review
4th generation mattress makers, handcrafted in the USA since 1931.
Blog
Room size guides, moving tips, weight specs, and bedding advice.
Extra Wide King Mattress
Find the right oversized width for your bedroom.