United States · market convention
Alaskan King bed dimensions
Current manufacturer examples list an Alaskan King at 108 × 108 inches (274.3 × 274.3 cm), a nine-foot square mattress with far more area than a standard King.
Semrush US · 6,600 searches/mo · KD 20- Centimeters
- 274.3 × 274.3 cm
- Inches
- 108 × 108 in
- Feet & inches
- 8 ft 12 in × 8 ft 12 in
- Meters
- 2.743 × 2.743 m
- Area
- 7.52 m² · 80.99 ft²
- Source status
- high confidence · agrees
Current manufacturer examples agree on 108 × 108 in. Confirm access paths, support system, and custom bedding dimensions before ordering.
The name describes a specialty market convention
Two current manufacturers agree on 108 × 108 in, but Alaskan King is not a regulated national standard. Written finished dimensions take priority over the label.
Room and access planning are essential
Use the outer base or frame dimensions—not only the mattress—to plan the room. Confirm stair, doorway, elevator, assembly, and support requirements with the manufacturer.
Nearest international equivalents
What is closest to Alaskan King?
- Width
- -71.3 cm
- Length
- -71.3 cm
- Width
- -81.3 cm
- Length
- -71.3 cm
- Width
- -91.3 cm
- Length
- -71.3 cm
- Width
- -94.3 cm
- Length
- -74.3 cm
Bedding fit
Use the mattress measurements, not only “Alaskan King.”
Applicable market labels include Alaskan King. These labels do not guarantee a particular finished sheet, duvet, comforter, blanket, or bedspread dimension.
For a fitted sheet, also measure mattress depth, topper, pad, and extra pocket allowance. For top bedding, choose the side and foot coverage you want.
Calculate bedding coverageQuestions, answered
Frequently asked questions
How big is an Alaskan King?
The current examples checked are 108 × 108 inches, or about 274 × 274 cm.
How much larger is it than a King?
Compared with a 76 × 80 in King, it adds 32 inches of width and 28 inches of length, more than doubling mattress area.