Florida King Mattress Buying Guide

A Florida King mattress is built for shoppers who want extra width without extra length.

At 108" x 80", a Florida King gives you the same length as a standard King, but much more side-to-side space. That makes it a smart choice for couples, pet owners, and families who want a wider bed but do not need the 108" length of an Alaskan King.

At Engineered Sleep, the Duo Epic Mattress is available in Florida King sizing as part of the oversized mattress collection. Pair it with the Epic Mattress Protector, Sonoma Wooden Bed Frame, or Atlas Upholstered Bed Frame to build a complete oversized sleep setup without piecing everything together from different places.

This guide will help you decide whether a Florida King mattress is right for your room, your sleep style, and your household.

What Size Is a Florida King Mattress?

A Florida King mattress measures:

108" x 80"

That means it is 9 feet wide and 80 inches long.

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

The easiest way to think about a Florida King: it gives you Alaskan King width with standard King length.

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

Who Should Buy a Florida King Mattress?

A Florida King is a strong choice if your biggest issue is width.

Couples who want more personal space

A standard King is 76" wide. A Florida King is 108" wide. That extra 32" can make a major difference for couples who want more room to spread out, sleep in different positions, or reduce that “you’re on my side” feeling.

Pet owners

If pets sleep in the bed, a Florida King gives them space without making the mattress longer than needed. This is especially helpful if your pets sleep along the side or foot of the bed and everyone ends up negotiating for space at 2 a.m.

Families who occasionally co-sleep

A Florida King is not as wide as a Family Bed, but it gives families much more room than a standard King. If kids sometimes climb into bed, the added width can make the bed feel more comfortable without requiring the full footprint of a Family Bed XL or Alaskan King.

Shoppers who do not need extra length

If you are comfortable with standard King length but want much more width, Florida King is one of the most logical oversized options.

Bedrooms with wide wall space

A Florida King works well in rooms that have enough width along the headboard wall. It can make a large bedroom feel balanced without extending too far into the room.

Who Should Not Buy a Florida King?

A Florida King may not be the best choice if you are very tall, need extra length, or want a square mattress.

You may want another oversized size if:

• You need more than 80" of length
• You want a square sleep surface
• You need maximum family co-sleeping width
• Your room is narrow
• You want a mattress that feels closer to a standard King upgrade

If length is your top priority, read the Texas King Mattress Buying Guide. If you want a square oversized mattress, compare the Wyoming King Mattress Buying Guide, Alberta King Mattress Buying Guide, or Alaskan King Mattress Buying Guide. If you want even more width, read the Family Bed Mattress Buying Guide.

What Room Size Do You Need for a Florida King?

A Florida King is 108" wide, so room width matters most.

Before buying, measure the wall where the headboard will go. You need room for the mattress, frame, walking paths, and any nightstands or side furniture. Since the mattress is 80" long, it may not extend farther into the room than a standard King, but it will take up much more side-to-side space.

Measure:

• Bedroom width and length
• Headboard wall width
• Door swing clearance
• Closet access
• Dresser drawer clearance
• Nightstand placement
• Walking space on both sides
• Bed frame footprint
• Delivery path from entryway to bedroom

Try to leave at least 24" to 30" of walking space around the sides you use most. With a Florida King, the key question is whether the room can handle 9 feet of bed width plus the frame and furniture.

A helpful step: tape a 108" x 80" rectangle on the floor. Then walk around it, open drawers, and test the room’s flow before ordering.

Florida King vs. Standard King

A Florida King is much wider than a standard King, but the same length.

Compared with a King, a Florida King gives you 32" of extra width. That is nearly 3 extra feet of side-to-side sleeping space.

Choose a King if you want standard bedding and easier furniture compatibility. Choose a Florida King if you want more space and are ready for an oversized frame, sheets, and protector.

Florida King vs. Alaskan King

A Florida King and Alaskan King are both 108" wide, but they are very different in length.

Choose a Florida King if you want:

• Alaskan King width
• Standard King length
• A wide bed that does not extend as far into the room
• More space for couples, kids, or pets

Choose an Alaskan King if you want:

• A square mattress
• Much more length
• A larger luxury sleep surface
• More room for tall sleepers or full-family co-sleeping

If your room is wide but not especially deep, Florida King may fit better. If your room is large in both directions, Alaskan King may be worth considering.

Florida King vs. Family Bed

A Florida King is 108" x 80". A Family Bed is 120" x 80".

Both have the same 80" length, but the Family Bed is 12" wider.

Choose a Florida King if you want:

• A wide oversized mattress
• More manageable dimensions than a Family Bed
• Extra room for couples, pets, or occasional co-sleeping
• Standard King length

Choose a Family Bed if you want:

• Maximum width
• More room for kids or multiple pets
• A family-first shared sleep surface
• The widest oversized setup available from Engineered Sleep

For many shoppers, Florida King is the more manageable extra-wide option. Family Bed is the “we want all the width” option.

Why Choose the Duo Epic Florida King Mattress?

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

A Florida King is wide enough that construction matters. You want the mattress to feel supportive across the full surface, manageable to 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. This helps make shipping and setup easier than dealing with one enormous mattress piece.

Personalized side-to-side support

The Duo Support system is split into two pieces. Each side can be flipped to create a slightly softer or slightly firmer feel, which is helpful for couples with different sleep 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 makes the Florida King more than just a wider mattress. You can choose the comfort feel that best matches how you sleep.

Strong edge support

On a Florida King, the extra width only matters if the full surface feels usable. Duo Epic is built with enhanced edge support, which helps the sides feel stable and supportive.

Best Bed Frames for a Florida King Mattress

A Florida King needs a frame designed for 108" x 80" 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 look. Made from solid Ambrosia Maple, it gives a wide oversized bed a warm, grounded, furniture-grade presence.

Choose Sonoma if you want visible wood character, craftsmanship, and a timeless bedroom centerpiece.

Atlas Upholstered Bed Frame

The Atlas Upholstered Bed Frame is a great fit if you want a softer, more modern bedroom feel. Upholstery can help a wide bed feel polished and cozy instead of visually heavy.

Choose Atlas if your style leans modern, tailored, soft, or hotel-inspired.

Do You Need a Florida King Mattress Protector?

Yes. A Florida King needs a properly sized mattress protector.

The Epic Mattress Protector is designed for oversized mattresses and offers waterproof protection. Because a Florida King is a specialty size, standard protectors will not fit correctly.

A protector is especially useful if:

• Kids sometimes sleep in the bed
• Pets sleep on the mattress
• You drink coffee or water in bed
• You want to keep the mattress cleaner over time
• You want the full setup protected from night one

With an oversized mattress, it is best to buy the protector at the same time as the mattress so you are not waiting on specialty bedding after delivery.

What Sheets Fit a Florida King?

Standard King sheets do not fit a Florida King mattress. You need sheets made for 108" x 80" dimensions.

Engineered Sleep offers oversized sheets for Epic mattress sizes, which helps simplify the setup. When shopping for sheets, 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

A Florida King is wide, so delivery and setup 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 corners
• Tape the 108" x 80" footprint in your 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 delivery boxes should be placed

Because Duo Epic is modular, setup is more manageable than moving one single oversized mattress. Still, it is worth preparing the room ahead of time.

Florida King Mattress FAQs

How big is a Florida King mattress?

A Florida King mattress is 108" x 80", or 9 feet wide by 80 inches long.

Is a Florida King bigger than a regular King?

Yes. A regular King is 76" x 80". A Florida King is 108" x 80", making it 32" wider with the same length.

Is a Florida King bigger than a California King?

A Florida King is wider but slightly shorter than a California King. A California King is 72" x 84", while a Florida King is 108" x 80".

Is a Florida King the same as an Alaskan King?

No. A Florida King is 108" x 80". An Alaskan King is 108" x 108". They are the same width, but the Alaskan King is 28" longer.

Is a Florida King good for couples?

Yes. A Florida King is a strong choice for couples who want much more side-to-side space than a standard King.

Is a Florida King good for families?

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

What kind of frame do you need for a Florida King?

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

Do regular King sheets fit a Florida King?

No. Regular King sheets are 76" x 80", while a Florida King is 108" x 80". You need properly sized Florida King sheets.

Build Your Florida King Sleep Setup

A Florida King is the right choice when you want much more width without adding extra length.

Start with the Duo Epic Florida King Mattress for oversized comfort, modular setup, personalized support, and premium comfort topper options. Add the Epic Mattress Protector to protect the mattress from day one. Then choose the frame that best fits your bedroom style: 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
• Alberta King Mattress Buying Guide
• Texas King Mattress Buying Guide
• Family Bed Mattress Buying Guide