What’s The Biggest Mattress

If you’re looking for the biggest mattress available, you’re probably after maximum space and comfort. What’s the biggest mattress you can actually buy? The answer is the Alaskan King, but finding the right giant bed involves more than just knowing its name.

This guide will walk you through everything about oversized mattresses. We’ll cover the standard and specialty sizes, where to find them, and what you need to consider before making such a large purchase. Getting a huge bed can change your sleep experience, but it requires some planning.

The title for the largest standard mattress goes to the Alaskan King. However, custom orders can go even bigger for truly unique spaces. Let’s break down the dimensions so you can visualize just how large these beds are.

Standard “Biggest” Mattress Sizes

Most people are familiar with King and California King sizes. But beyond them, there are even larger options.

Alaskan King: This is the widely recognized biggest standard mattress. It measures 108 inches wide by 108 inches long (9’ x 9’). It offers massive space for multiple sleepers, kids, or pets.
Wyoming King: A close second, this mattress is 84 inches wide by 84 inches long (7’ x 7’). It’s a perfect square, offering more width than a standard King.
Texas King: This one is all about length. It measures 80 inches wide by 98 inches long. It’s ideal for very tall individuals who fine a California King still too short.

Custom and Non-Standard Giant Mattresses

If those aren’t enough, you can explore the world of custom bedding. Some companies will create mattresses to your exact room specifications.

Family Beds: These can be custom-sized to act as a shared sleeping surface for entire families.
Room-Spanning Mattresses: Literally built to fill a specific room dimension, often requiring custom-built frames and special access for installation.
Theatre/Media Room Beds: Large, low platform beds designed for home theaters.

Comparing Dimensions Visually

To really understand the scale, let’s compare it to a standard King (76” x 80”).

An Alaskan King has 3,240 more square inches of space than a standard King. That’s like adding an entire twin mattress to your bed.
A Wyoming King, while shorter in length than a King, is 8 inches wider, giving you more shoulder room.
A Texas King provides an extra 18 inches of legroom compared to a standard King, which is a major benefit for anyone over 6’5″.

Why Choose Such a Large Mattress?

The reasons go beyond just having a lot of room to starfish. There are practical benefits to a massive sleep surface.

For Couples with Different Sleep Schedules: Movement is less likely to disturb your partner.
Families with Young Children: It allows for comfortable co-sleeping or for kids who frequently join you in the night.
Pet Owners: There’s finally enough space for you, your partner, and the dogs.
Individuals with Mobility Issues: The extra space can make getting in and out easier and more comfortable.
For Pure Luxury: The feeling of having a vast, uninterrupted sleep space is unparalleled.

Major Challenges and Considerations

Owning the biggest mattress isn’t all easy. There are significant logistical hurdles to think about.

Room Size and Access

This is the first and biggest obstacle. You need a very large bedroom.

Minimum Room Size: For an Alaskan King, experts recommend a room at least 14’ x 14’ to allow for walking space around the bed and other furniture.
Doorways, Hallways, and Stairs: Measure every turn and doorway from the street to your bedroom. A 9-foot square mattress will not fit up a standard staircase or through a 30-inch door. It may require professional installation via crane through a window, or assembly inside the room.
Floor Support: Ensure your floor can handle the significant weight of a large mattress, multiple sleepers, and a heavy-duty frame.

Finding Bedding and Frames

You won’t find sheets for an Alaskan King at your local department store.

Custom Bedding: Sheets, duvet covers, and mattress protectors will almost always need to be custom-made, which increases cost.
Bed Frames and Bases: Very few companies stock frames for these sizes. You’ll likely need a custom-built platform bed or a specialized order from a manufacturer that caters to oversized mattresses.
Headboards: Similarly, any headboard or footboard will need to be custom fabricated.

Cost Implications

The price tag is substantial, and it’s not just for the mattress itself.

Mattress Cost: Expect to pay several thousand dollars, often starting around $4,000 and going much higher depending on materials.
Custom Bedding Cost: Sheet sets can cost hundreds of dollars.
Delivery and Installation: If special access is needed, delivery can cost hundreds or even thousands extra.
Potential Home Modifications: In extreme cases, you might need to temporarily remove a window or door frame.

Step-by-Step Guide to Buying a Giant Mattress

If you’re determined to get the biggest mattress, follow these steps to avoid costly mistakes.

Step 1: Measure Your Space Meticulously

Don’t just eyeball it. Use a tape measure and create a floor plan.

Measure the exact dimensions of your bedroom.
Draw the layout, including windows, doors, closets, and vents.
Use painter’s tape on the floor to mark the exact footprint of the mattress size you want. Live with this outline for a few days to ensure it feels right.

Step 2: Plan the Delivery Path

This is the most critical logistical step.

Measure all door widths, hallway widths, and ceiling heights.
Check stairwells for tight turns.
Contact the mattress seller with these measurements. They can advise if the mattress can be rolled, folded, or if it requires special delivery.

Step 3: Research Specialized Retailers

Not all mattress companies make these sizes. You need to find specialists.

Search online for “custom size mattresses” or “oversized mattresses.”
Look for companies that explicitly list Alaskan, Wyoming, or Texas King sizes.
Read customer reviews about their delivery and customer service experience with large products.

Step 4: Consider the Mattress Type

The material matters for both comfort and delivery.

Memory Foam or Latex: These can often be compressed and shipped in a box, solving many delivery problems even for large sizes. However, verify the compressed dimensions.
Innerspring/Hybrid: These are almost always delivered fully assembled and are much more difficult to maneuver.
Airbeds: Some high-end airbed companies offer custom sizes, and they deflate for easy setup.

Step 5: Budget for the Entire Project

Add up all the associated costs before you commit.

Mattress price.
Delivery and installation fees.
Custom frame or base cost.
Cost for at least two sets of custom sheets and protectors.
A contingency fund for unexpected issues.

Alternatives to the Absolute Biggest Mattress

If the challenges seem to daunting, there are excellent alternatives that still offer a huge amount of space.

Two Twin XLs vs. a King

Pushing two Twin XL mattresses (each 38” x 80”) together creates a sleeping surface of 76” x 80”—the exact dimensions of a standard King. This setup offers flexibility, as you can choose different firmness levels for each side. You do will have a seam in the middle, but a bed bridge can help.

The California King

At 72” x 84”, it’s narrower but longer than a standard King. It’s a more accessible “large” mattress with readily available bedding and frames. It’s the best choice for very tall single sleepers or couples where one person is extremely tall.

Standard King Size

The ubiquitous King size (76” x 80”) is the largest mattress you can easily find in most stores. For many people, this provides ample space without any of the custom hassles. Bedding is easy to find and delivery is straightforward.

Caring for Your Giant Mattress

Maintaining a massive mattress has its own set of considerations.

Rotating: Most manufacturers recommend rotating your mattress head-to-foot every 3-6 months. This can be a two-person job due to the size and weight.
Cleaning: Spot clean spills immediately. Vacuuming the surface regularly is important, but moving the mattress to clean underneath is a major task. Consider a platform bed with slats that allow for some airflow and easier cleaning access.
Support: Use a foundation or bed frame with ample center support. A mattress this large can sag without proper support across its entire area.

FAQ Section

What is the biggest mattress size called?

The biggest standard mattress size is called the Alaskan King. It measures 9 feet by 9 feet (108″ x 108″). Some companies may offer custom sizes that are even larger.

How much does the largest mattress cost?

An Alaskan King mattress typically starts around $4,000 and can easily exceed $8,000 or more for high-end materials. Remember to factor in the cost of custom bedding, a special frame, and potential delivery fees.

Can you get sheets for an Alaskan King mattress?

Yes, but you cannot buy them in regular stores. You must order custom-made sheets from specialty retailers or the company that sold you the mattress. This applies to mattress protectors, duvet covers, and fitted sheets.

Is a bigger mattress always better?

Not necessarily. While a bigger mattress offers more space, it only makes sense if your room can accommodate it, you can manage the delivery, and your budget allows for the mattress and all the custom accessories. For many, a standard King or California King is the perfect balance of size and practicality.

What is the biggest mattress you can get shipped in a box?

Many online mattress-in-a-box companies now offer King and California King sizes. For the oversized Alaskan or Wyoming Kings, you need to check with specific custom manufacturers. Some foam or latex companies can compress these large sizes, but the box will still be very large and heavy.

Do I need a special bed frame for the biggest bed?

Absolutely. A standard bed frame will not fit. You will need to purchase a custom frame or base designed specifically for the dimensions of your oversized mattress. This is crucial for providing proper support and preventing sagging.

Choosing the biggest mattress is a major decision that impacts your space, your budget, and your daily life. While the Alaskan King offers an incredible amount of room, the journey to owning one requires careful planning and a willingness to tackle unique challenges. For those who value space above all else and have the means to make it work, the reward is a truly grand and comfortable sleep haven. Always prioritize accurate measurements and thorough research to ensure your giant bed dream doesn’t become a logistical nightmare.