Alberta King Mattress Buying Guide

An Alberta King mattress is the oversized mattress for people who want a large square bed, but do not want to jump all the way to an Alaskan King.

At 96" x 96", an Alberta King gives you 8 feet of width and 8 feet of length. It is larger than a Wyoming King, more balanced than many rectangular oversized beds, and easier to plan around than a full 108" x 108" Alaskan King.

That makes it a strong fit for couples, pet owners, families who occasionally co-sleep, and shoppers who want a dramatic oversized mattress that still feels manageable in the right primary bedroom.

This guide will help you decide whether an Alberta King mattress is right for your space and how to build a complete oversized sleep setup with the Duo Epic Mattress, Epic Mattress Protector, Sonoma Wooden Bed Frame, and Atlas Upholstered Bed Frame.

What Size Is an Alberta King Mattress?

An Alberta King mattress measures:

96" x 96"

That gives it a square shape with 8 feet of width and 8 feet of length.

Here is how it compares to common and oversized mattress sizes:

Think of the Alberta King as the middle square size: more spacious than a Wyoming King, but not quite as room-dominating as an Alaskan King.

For the full oversized comparison, visit the Oversized Mattress Buying Guide.

Who Should Buy an Alberta King Mattress?

An Alberta King is a great choice if you want noticeably more space than a King or Wyoming King, but you still want the bed to feel proportionate in the room.

Couples who want a true oversized upgrade

An Alberta King gives couples a lot more personal space. Compared with a standard King, it adds 20" of width and 16" of length. That extra room can help if one partner moves around, sleeps hot, likes extra pillows, or simply wants more breathing room.

Pet owners

If pets sleep in the bed, an Alberta King gives them room without pushing everyone else to the edge. It is especially useful for couples with one or two larger dogs.

Families who occasionally co-sleep

An Alberta King is not as wide as a Family Bed, but it gives families far more space than a standard King. If kids sometimes climb into bed, the extra square footage can make the night feel less crowded.

Shoppers who want a large square mattress

Some bedrooms look and feel better with a square oversized bed. An Alberta King gives the room a balanced, luxury look without requiring the full footprint of an Alaskan King.

Homeowners with a large primary bedroom

If your bedroom can comfortably handle an 8-foot by 8-foot mattress plus walking space, an Alberta King can feel like a major upgrade without going to the largest possible size.

Who Should Not Buy an Alberta King?

An Alberta King may not be the right choice if your room is only slightly larger than a standard King setup or if you mostly need extra length rather than balanced space.

You may want another size if:

• Your room cannot support an 8-foot by 8-foot mattress footprint
• You want the largest square mattress available
• You need maximum family co-sleeping width
• You mainly need extra length for a very tall sleeper
• You want bedding that is easy to find in standard retail stores

If you need a smaller square oversized mattress, read the Wyoming King Mattress Buying Guide. If you want the largest square option, compare the Alaskan King Mattress Buying Guide. If length matters most, start with the Texas King Mattress Buying Guide.

What Room Size Do You Need for an Alberta King?

An Alberta King is 96" x 96", so your room needs more than 8 feet in each direction. You also need space for the frame, walking paths, furniture, doors, drawers, and nightstands.

Before buying, measure:

• Bedroom length and width
• Doorways, hallways, and staircases
• Closet door clearance
• Bedroom door swing
• Dresser drawer clearance
• Nightstand placement
• Walking space around the bed
• Frame footprint

Try to leave at least 24" to 30" of walking space around the sides of the bed you use most. If you have a bench at the foot of the bed, a large dresser, or wide nightstands, account for those too.

A helpful planning move is to tape a 96" x 96" square on the floor. Then walk around it, open drawers and doors, and make sure the room still feels comfortable. If the bed fits only on paper, it may not be the right size in real life.

Alberta King vs. Wyoming King

Both Alberta King and Wyoming King mattresses are square oversized options, but the Alberta King is larger.

Choose a Wyoming King if you want more room than a standard King but need the bed to fit more easily in a large bedroom.

Choose an Alberta King if you want a more dramatic oversized feel and have enough room for an 8-foot by 8-foot mattress.

Alberta King vs. Alaskan King

An Alberta King is 96" x 96". An Alaskan King is 108" x 108".

That means an Alaskan King is 12" wider and 12" longer than an Alberta King. The difference may sound small at first, but in a bedroom, that extra foot in each direction can matter.

Choose an Alberta King if you want:

• A large square oversized mattress
• More room than a Wyoming King
• A size that feels luxurious but not maximum
• A slightly easier room fit than Alaskan King

Choose an Alaskan King if you want:

• The largest common square oversized mattress
• Maximum room for kids, pets, or sprawling
• A 9-foot by 9-foot luxury sleep surface
• A dramatic centerpiece for a very large bedroom

If you are between the two, measure carefully. The better choice is the one that gives you sleep space without making the bedroom feel crowded.

Alberta King vs. Texas King

An Alberta King is square. A Texas King is rectangular.

Choose Alberta King if you want a balanced oversized sleep surface and a large square mattress.

Choose Texas King if you are a tall sleeper or your room works better with a long rectangular bed.

Why Choose the Duo Epic Alberta King Mattress?

The Duo Epic Mattress is Engineered Sleep’s oversized mattress system, available in Alberta King and other large sizes.

An Alberta King is large enough that mattress construction matters. You need a mattress that is supportive across the full surface, manageable to move and set up, and comfortable for more than one sleeper.

Modular 3-piece design

The Duo Epic uses a 3-piece design with comfort layers and a two-piece Duo Support system. That makes setup and moving more manageable than a single oversized mattress piece.

Personalized side-to-side support

The Duo Support system is split into two pieces. Each side can be flipped to feel slightly softer or slightly firmer, which helps couples with different support preferences.

Four comfort topper options

The Duo Epic lets you choose from four comfort options:

• Duo Latex: cushion-firm, responsive feel
• Duo Latex Plus: softer latex comfort with extra plushness
• Duo Memory: firmer contouring memory foam feel
• Duo Memory Plus: plush comfort using memory foam and latex

This gives Alberta King shoppers a better way to choose the right feel, instead of picking only by size.

Strong edge support

A larger mattress should feel stable and usable across the whole surface. Duo Epic is built with enhanced edge support, which helps when couples, families, or pets use more of the bed.

Best Bed Frames for an Alberta King Mattress

An Alberta King needs a frame designed for 96" x 96" sizing. Standard King frames will not fit.

Engineered Sleep offers two oversized bed frame options: the Sonoma Wooden Bed Frame and the Atlas Upholstered Bed Frame.

Sonoma Wooden Bed Frame

The Sonoma Wooden Bed Frame is a strong choice if you want a natural wood frame that feels substantial and timeless. Made from solid Ambrosia Maple, Sonoma pairs well with an Alberta King because the bed becomes a central design feature in the room.

Choose Sonoma if you want warmth, wood grain, and a furniture-grade look.

Atlas Upholstered Bed Frame

The Atlas Upholstered Bed Frame is a great fit if you want a softer, more refined bedroom style. The upholstered design can help a large square bed feel finished, cozy, and modern.

Choose Atlas if you prefer a tailored, upholstered look over exposed wood.

Do You Need an Alberta King Mattress Protector?

Yes. An Alberta King mattress needs a properly sized protector.

The Epic Mattress Protector is designed for oversized mattresses and offers waterproof protection. That matters because an Alberta King is a specialty mattress, and a standard protector will not fit correctly.

A mattress protector is especially important if:

• You have kids
• Pets sleep in the bed
• You drink water or coffee in bed
• You want to keep the mattress cleaner over time
• You want protection from the first night

For a complete setup, order the Duo Epic, Epic Mattress Protector, oversized sheets, and frame together so the bed is ready to use after delivery.

What Sheets Fit an Alberta King?

Standard King sheets will not fit an Alberta King mattress. You need sheets made for 96" x 96" dimensions.

Engineered Sleep offers oversized sheets for Epic mattress sizes, which helps simplify the buying process. When shopping, check both mattress dimensions and mattress height.

Duo Epic height depends on the comfort option:

• Duo Latex and Duo Memory: 13"
• Duo Latex Plus and Duo Memory Plus: 15"

Fitted sheet pocket depth matters, especially if you choose one of the 15" comfort options.

Delivery and Setup Tips

An Alberta King is large enough that delivery planning is important.

Engineered Sleep notes that the Duo Epic ships in 3 boxes, with shipping options shown at checkout, including free FedEx Home shipping to the 48 contiguous states, in-home delivery and setup, and old mattress removal.

Before delivery day:

• Measure doorways, hallways, stairs, and tight turns
• Tape the 96" x 96" footprint in the bedroom
• Clear the path from entryway to bedroom
• Assemble or prepare the bed frame
• Have your Epic Mattress Protector and sheets ready
• Decide whether old mattress removal is needed
• Confirm where the delivery boxes should go

Because Duo Epic is modular, setup is more approachable than moving one giant mattress. But the room and frame should still be ready before it arrives.

Alberta King Mattress FAQs

How big is an Alberta King mattress?

An Alberta King mattress is 96" x 96", or 8 feet by 8 feet.

Is an Alberta King bigger than a regular King?

Yes. A regular King is 76" x 80". An Alberta King is 96" x 96", making it 20" wider and 16" longer.

Is an Alberta King bigger than a Wyoming King?

Yes. A Wyoming King is 84" x 84". An Alberta King is 96" x 96", making it 12" wider and 12" longer.

Is an Alberta King smaller than an Alaskan King?

Yes. An Alaskan King is 108" x 108". An Alberta King is 96" x 96", making it 12" narrower and 12" shorter.

Is an Alberta King good for couples?

Yes. An Alberta King is a great choice for couples who want much more space than a standard King while keeping a balanced square shape.

Is an Alberta King good for families?

Yes, especially for families who occasionally co-sleep or want more room for kids or pets. If maximum family width is the priority, compare the Family Bed Mattress Buying Guide.

What kind of bed frame do you need for an Alberta King?

You need a frame made for Alberta King dimensions. Engineered Sleep offers oversized frame options including the Sonoma Wooden Bed Frame and Atlas Upholstered Bed Frame.

Do regular King sheets fit an Alberta King?

No. Regular King sheets are 76" x 80", while an Alberta King is 96" x 96". You need properly sized Alberta King sheets.

Build Your Alberta King Sleep Setup

An Alberta King is a smart choice if you want a large square oversized mattress that sits between the manageable Wyoming King and the massive Alaskan King.

Start with the Duo Epic Alberta King Mattress for oversized comfort, modular setup, personalized support, and premium comfort topper options. Add the Epic Mattress Protector to protect your mattress from day one. Then choose the frame that best fits your room: the natural solid wood look of the Sonoma Wooden Bed Frame or the soft, modern feel of the Atlas Upholstered Bed Frame.

Want to compare every oversized size before deciding? Visit the Oversized Mattress Buying Guide, or explore more size-specific guides:

• Alaskan King Mattress Buying Guide
• Wyoming King Mattress Buying Guide
• Texas King Mattress Buying Guide
• Family Bed Mattress Buying Guide
• Florida King Mattress Buying Guide