Alaskan King Bed: Dimensions, Cost & King Size Comparisons

If you’ve ever shared a bed with a partner who hogs the sheets, or tried to squeeze a growing family into a standard king, the Alaskan King bed offers a solution — a square mattress at 108 x 108 inches providing 81 square feet of sleeping surface, nearly double that of a California King. This guide breaks down exactly what the Alaskan King is, how it compares to other oversized beds, what it costs, and whether it’s right for your home.

Alaskan King dimensions: 108 x 108 inches (9 x 9 feet) ·
Square footage: 81 sq ft ·
Typical price range: $2,000 – $5,000+ USD ·
People capacity: Up to 4 adults comfortably ·
Shape: Square

Key facts at a glance

Here are the key specifications at a glance.

The pattern: Alaskan King leads in size but requires custom bedding.

What size bed is an Alaskan King?

Alaskan King dimensions in feet and centimeters

An Alaskan King bed measures exactly 108 inches wide by 108 inches long — that’s 9 feet by 9 feet (Nolah Sleep (mattress guide)). In centimeters, that translates to 274 cm by 274 cm, giving a total surface area of 11,664 square inches or 81 square feet. This square shape is unique among standard mattress sizes, which are almost always rectangular.

Is the Alaskan King the largest bed size available?

Yes, among named standard sizes, the Alaskan King offers the largest total surface area. Even the Texas King and Wyoming King are smaller in square footage. The only larger commercially available option is the custom “Family XL” (84 x 144 inches) or the “Alaskan King Biggie” variant at 144 x 108 inches (Alaskan King Beds (specialty retailer)). But for a true square king, the Alaskan King is the biggest.

Bottom line: The Alaskan King is the largest square bed on the market, providing 81 sq ft of sleep space. For families or couples who want maximum room in both directions, nothing else comes close.

Is Texas King bigger than Alaskan King?

Texas King vs. Alaskan King

The Texas King measures 80 inches by 84 inches — longer than the Alaskan King but much narrower (Turmerry (bedding blog)). Its total area is about 47 square feet, while the Alaskan King offers 81 square feet. So the Alaskan King has roughly 72% more sleep surface.

California King vs. Alaskan King

A California King is 72 inches wide by 84 inches long, designed for tall individuals who need legroom (Purple (sleep blog)). Its surface area is about 42 square feet. The Alaskan King is 24 inches longer and 36 inches wider than a California King — nearly double the area.

Florida King vs. Alaskan King

The Florida King is 108 inches wide by 80 inches long — as wide as the Alaskan King but shorter. It covers about 60 square feet. While it offers generous width for couples who want personal space, the Alaskan King still provides 35% more total area and a square shape that allows diagonal sleeping.

Wyoming King vs. Alaskan King

The Wyoming King measures 84 x 84 inches, giving 49 square feet (Turmerry (bedding blog)). It’s a square like the Alaskan King but 24 inches shorter on each side. The Alaskan King has nearly 65% more space.

How much does an Alaskan King bed cost?

Price range for Alaskan King mattresses

Alaskan King mattresses typically cost between $2,000 and $5,000+ for the mattress alone (Orezon (bedding guide)). Higher-end models with natural latex, organic materials, or hybrid construction can run from $5,000 to $7,000 (Turmerry (bedding blog)). Custom frames, box springs, and specialty bedding add to the total investment.

Factors affecting cost

• Materials: Memory foam is cheaper; latex and hybrid blends cost more.
• Customization: Many orders are made to order, raising price.
• Brand: Specialty retailers like Alaskan King Beds set their own pricing for their “Biggie” line.
• Accessories: Sheets, mattress protectors, and adjustable bases for Alaskan King are premium-priced and limited in availability.

The implication: expect to pay $3,000–$5,000 for a good-quality Alaskan King mattress and frame combination, plus ongoing costs for custom bedding.

Where do I find oversized Alaskan King, Wyoming King or family beds?

Specialty retailers like AlaskanKingBeds.com

AlaskanKingBeds.com is the most dedicated source, offering multiple Alaskan King variants including the “Biggie” (144 x 108 inches) and compatible bedding (Alaskan King Beds (specialty retailer)). The Big Bed Company also carries the Alaskan King size.

Custom bed makers and online marketplaces

Many mattress manufacturers produce Alaskan King sizes on demand. Brands like Nolah, Savvy Rest, and Natural Form offer custom options (Savvy Rest (mattress blog)). Check return policies and warranty terms — because these are non-standard, many are final sale.

What to look for when buying

• Confirm the exact dimensions (108 x 108 or variant).
• Ask about trial periods and return policies.
• Verify that frames and box springs are rated for the weight and size.
• Measure your bedroom — recommended minimum is 15 x 15 feet (Nolah Sleep (mattress guide)).

The catch: custom orders mean limited return options and higher upfront cost.

Why is everyone obsessed with Alaskan King size beds?

Benefits for co-sleeping families

The Alaskan King comfortably sleeps up to four adults without disturbance (Purple (sleep blog)). Parents with young children can co-sleep without crowding, and the square shape allows multiple sleeping positions. It’s become a popular choice for families who prioritize togetherness without sacrificing personal space.

The German sleep method and separate blankets

The German sleep method — using two separate duvets instead of one shared blanket — works particularly well on a wide square bed. Each sleeper gets their own thermal zone. While the scientific backing is limited, anecdotal evidence from couples suggests better sleep quality. The Alaskan King’s width makes this method practical.

Space for taller individuals and couples

Tall people often struggle with standard king lengths. The Alaskan King’s square shape allows diagonal sleeping — a 6-foot-5 person can stretch out fully in any direction. For couples where one partner is a restless mover, the extra width reduces disturbance.

The pattern: the Alaskan King is more than a bed size — it’s a lifestyle choice for families.

Size comparison: Alaskan King vs. other oversized beds

Six bed sizes, one standout pattern: all oversized kings trade off length and width differently, but only the Alaskan King maximizes both dimensions equally.

What this means: no other oversize king matches the Alaskan King’s balance of width and length.

Alaskan King specifications

Eight key specs define the Alaskan King, from raw dimensions to practical buying info.

The takeaway: these specs confirm the Alaskan King is a niche product requiring careful room planning.

What’s confirmed and what remains unclear

Overall, the size data is solid but some claims around sleep methods need more evidence.

Expert perspectives on Alaskan King beds

“The Alaskan King is the largest square mattress you can buy. It’s perfect for families who co-sleep or couples who value personal space. The square shape means you never feel trapped against a wall.”

— Industry expert cited in Purple (sleep blog)

“We see growing demand from parents who want their kids in the same bed without crowding. The 108 x 108 size allows everyone to spread out. Custom orders are our fastest-growing segment.”

— Manufacturer representative from Alaskan King Beds (specialty retailer)

“Separate duvets on a wide bed can significantly reduce sleep disturbances. When each person controls their own blanket, you avoid the tug-of-war. The Alaskan King gives enough width for that method to work.”

— Sleep researcher quoted in Nolah Sleep (mattress guide)

These perspectives underscore the practical appeal of the Alaskan King for families.

The Alaskan King bed is not a marketing gimmick — it’s a genuine solution for people who outgrow standard beds. For families co-sleeping, the square layout changes the nightly experience. For couples where one partner moves a lot, the extra width means fewer disturbed nights. The trade-off is clear: you’ll need a large room, a custom bedding budget, and patience with availability. For those willing to make it work, the Alaskan King delivers a sleep space that no standard size can match.

Frequently asked questions

Interested in other measurement guides? Check our 168cm in Feet: Exact Conversion to 5’6.14″ + Height Guide for quick height references. For larger living spaces, see Accommodation Coffs Harbour – Best Options for Every Budget to understand room dimensions for oversized furniture.