The standard king size bed (the largest standard mattress size) is 76 inches wide and 80 inches long. This sounds big already, but the biggest bed sizes are several inches to several feet bigger than the regular king size mattress.
To many of us, oversized mattresses seem absolutely unnecessary, but they do have their perks. Most people use oversized mattresses because the beds accommodate co-sleeping families. Others turn to oversized mattresses if they’re uniquely tall.
The exact big bed you may want varies on how you plan on using it. For co-sleepers, it depends on how many people are in your family. Tall sleepers should look at how tall they are compared to the bed’s length to help them decide.
Below, we take you through the three biggest bed sizes and where you can find them if you’re interested.
Biggest Bed Size Dimensions
|Wyoming King||Texas King||Alaska King|
|Minimum Recommended Room Size (feet)||12 by 12||12 by 14||16 by 16|
|Minimum Recommended Room Size (cm)||365.76 by 365.76||365.76 by 426.72||487.68 by 487.68|
Dimensions: 84 inches wide by 84 inches long
It’s almost funny calling a Wyoming king small, but of the three biggest bed sizes, the Wyoming king is the smallest. It’s 84 inches wide by 84 inches long, making it 4 inches longer and 8 inches wider than king size bed dimensions.
You might see some companies calling a mattress of this size an emperor size mattress, but it’s the same as a Wyoming king.
Wyoming kings are a good option for plus-sized couples or families who want to co-sleep with one or two children. The Wyoming king bed isn’t unreasonably large, either, so you can use it in most rooms where you would use a standard king bed (roughly a 12 by 12 foot room).
Due to their size and the number of materials needed for their construction, Wyoming king mattresses typically cost between $1500 and $3000, making many of them one of the best mattresses under $2000.
- Suitable for tall single adults and an excellent mattress for couples
- Fits large sleepers or couples
- Good for small co-sleeping families
- More expensive than large standard size mattresses
Dimensions: 80 inches wide by 98 inches long
The Texas king is the second largest oversized mattress, named after the second-largest American state. It’s 80 inches wide and 98 inches long, so while the Texas king is narrower than the Wyoming king, it’s also 14 inches longer.
Texas king mattresses are a good option for tall sleepers if a king or California king bed just isn’t cutting it. And when we mean tall, we mean someone who is at least 6.5 to 7 feet tall. Even then, someone who is 6.5 feet tall (78 inches) would still have 20 inches of extra foot room.
Texas kings are just a bit more than Wyoming kings, costing between $2000 to $3500 on average. Texas kings fit in narrower bedrooms, but your room should be at least 12 feet wide by 14 feet long to fit this bed.
- Accommodates very tall single sleepers
- Good for families who don’t have wide bedrooms
- Narrowest oversized mattress
- Doesn’t fit more than one or two small children for co-sleeping
Dimensions: 108 inches wide by 108 inches long
Since Alaska is the largest state in America, it’s only fair to call the largest oversized mattress after it. The Alaskan king is 108 by 108 inches, which is ginormous compared to other large mattresses.
The Alaskan king bed is 24 inches longer than the California king, the longest standard mattress, and 32 inches wider than the king, the widest standard mattress. To put this into perspective, that’s several feet of extra space on both ends of the Alaskan king.
Alaskan king mattresses are a great option for very tall adults who need to stretch out since there will be no chance of their feet sticking out. Alaskan kings are also an excellent family bed for those who want to co-sleep with more than two children.
The Alaskan king even fits up to three or four adults comfortably, if you’re ever in a pinch and need to share a large bed.
Since Alaskan kings are so large, they cost between $2500 to $5000 for the mattress alone. Your bedroom should be at least 16 by 16 feet to fit an Alaskan king, though most master bedrooms are smaller than this.
- Perfect for large, co-sleeping families
- Suits very tall sleepers
- Couples won’t disturb each other while sleeping
- The most expensive oversized mattress
- Requires a huge master bedroom
Where to Get Oversized Mattresses and Accessories
Your everyday mattress store won’t sell oversized mattresses or their accessories (bed frames, foundations, sheets, or comforters). You can usually find this large of mattresses at specialty retailers or boutiques that make each bed to order. The companies who sell oversized mattresses typically sell the matching accessories as well.
With custom-ordering, you can generally decide what the mattress is made from and can choose to add any special materials. You might consider a hybrid, innerspring, or memory foam mattress.
Since oversized mattresses are so large and uncommon, the price tags are quite hefty, from between $1500 to over $5000. Choosing a customizable mattress with special materials, like organic textile and foams, can cause the final cost to significantly climb.
Before getting any oversized mattress, be sure you have a big enough bedroom to accommodate it. Ideally, there should be at least 2 feet of space between three sides of the bed, excluding the side against the wall, to account for walking space and any other furniture in the room.
What are the standard mattress sizes?
There are six standard mattress sizes, with the smallest being a twin bed and the largest being a king bed. The standard bed sizes are as follows:
- Twin: 39 x 75 inches
- Twin XL: 39 x 80 inches
- Full/Double: 54 x 75 inches
- Queen: 60 x 80 inches
- King: 76 x 80 inches
- California King: 72 x 84 inches
Some non-standard sizes you might come across include crib, toddler, small single (cot), full XL, and Olympic queen size mattresses.
What’s a double king size bed?
A double king size bed is the widest oversized mattress at 152 inches wide and 80 inches long. That’s the equivalent of four twin XL beds pushed together.
At 12 feet wide, this bed is absolutely massive and will likely fill the length of most bedrooms, if not more. A double king bed is good for co-sleeping families with three or four children.
Is co-sleeping okay?
Many families are intrigued by oversized mattresses to co-sleep. Co-sleeping, also called bed-sharing, is when parents sleep in bed with their children or infants.
In the past, sharing a large bed with your children was common, but nowadays, most families sleep separately. Still, some families have returned to co-sleeping to better bond with their children. However, co-sleeping does raise your child’s risk of sudden infant death syndrome (SIDS) and should be done with caution.
What mattress size is good for couples?
We recommend using at least standard queen beds or standard king beds if you share your bed, though a queen size mattress is the smallest comfortable option. If you and your partner are moderately tall (between 6 to 6.5 feet), a California king or Wyoming king offers extra foot room.
We recommend Alaskan or Texas kings for plus-sized couples and couples who co-sleep with their children. You may also consider one of these two mattresses if you and your partner have different sleep schedules because there will be minimal motion transfer from one end of the bed to the other.
What size bed should a 6-foot tall person get?
With the mention of how oversized beds are suitable for incredibly tall individuals, you may wonder what type of bed an average-height adult needs. Those who are roughly 6 feet tall should use a bed 80 inches or longer. Twin XL, queen, king, and California king mattresses are all suitable standard size mattresses 80 inches or longer.
Small single bed sizes like twin XL mattresses are suitable for dorm rooms, bunk beds, and small homes, while the larger mattress sizes fit best in master bedrooms or as mattresses for guest rooms.
Frankly, most people won’t need an oversized mattress, but if you’re in a large co-sleeping family or are very tall, investing in a big bed might be a smart move. The main factor to keep in mind when choosing one of the biggest bed sizes is to have enough space in your bedroom. They’re also quite heavy and difficult to transport, so once it’s in your home, it may be a big task to get it out.
The Alaskan king is the largest oversized mattress and measures 108 inches wide and 108 inches long. The mattress is 24 inches wider than a Wyoming king and 10 inches longer than a Texas king mattress, making this square-shaped oversized bed spacious enough to accommodate a large family comfortably.What is the biggest bed you can order? ›
An Alaskan king bed measures 108 inches by 108 inches (9 feet by 9 feet) and is the largest mattress available. These beds offer multiple sleepers plenty of room to spread out and sleep comfortably. Plus, taller individuals (those over 6.5 feet) will enjoy the extra legroom that comes with an Alaskan king.What is the largest king size bed you can buy? ›
It is often said that the Alaskan King, sized at 108” x 108”, is the biggest bed, and it certainly is the longest, with a generous width to go with it. However, the widest bed out there is the Family XL, which is a full 144” wide, but only 84” long.What is bigger than a Texas king bed? ›
Alaska is the largest state in the country, which explains why the largest oversized mattress is named after this state. Measuring 108 inches by 108 inches, this ginormous mattress gives you and your whole family the luxury of sprawling comfortably.What is an emperor size bed? ›
The Emperor size mattress claims our largest and most luxurious standard size, giving you the maximum amount of space a mattress can provide. Pure decadence. An Emperor mattress measures 6'6”wide by 6'6” long or 200cm wide by 200 cm long.Which king is wider? ›
King vs. California King Dimensions
A standard California King is 72 inches wide by 84 inches long and a standard King mattress is 76 inches wide by 80 inches long. The standard King resembles more of a square shape while the Cal King looks more like a rectangle.
The super king bed is one of the larger beds on the market, measuring at 72 by 78 inches (180 by 200 centimeters) and considered an “oversized mattress.” It is thinner and slightly shorter than a standard king size mattress.Is Alaskan king bed real? ›
Alaskan bed or Alaskan king bed mattress is the largest oversized mattress available on the market. It measures 108 inches wide and 108 inches long, making it the biggest bed globally. It is the perfect choice for families whose members wish to sleep together while still having enough personal space.Is Alaskan king bed bigger than California? ›
You might be ready for a California King bed, but you're wondering what the difference is between a California King and an Alaskan King. In comparison to a California King, an Alaskan King is bigger, measuring 24 inches longer and 36 inches wider.Who has the biggest bed in the world? ›
What is the largest bed in the world? The largest bed in the world according to the Guinness Book of World Records was made by Commissie Zomerfeesten St Gregorius Hertme (NL) in Hertme. It measured 86 foot 11 inches long and 53 foot 11 inches wide.
How much does an Alaskan King Bed Cost? An Alaskan king size mattress usually costs between $2,000 and $7,000 for just the mattress. This price can go higher if you plan to get a higher end luxury mattress or need a headboard, sheets, foundation, etc..Whats bigger than a California King? ›
The Alaskan king bed is 24 inches longer than the California king, the longest standard mattress, and 32 inches wider than the king, the widest standard mattress.What bed comes after King? ›
|Full (Double)||54″ x 75″|
|Queen||60″ x 80″|
|King||76″ x 80″|
|Split King||38″ x 80″ (each mattress)|
Shortly after World War II, a Los Angeles mattress merchant decided that Californians, Angelenos in particular, had big enough houses and big enough lifestyles to warrant Big Beds. So he built a bed six feet wide by seven feet long, or 72 inches by 84 inches. And he called it the California King.What size is a California King? ›
The California king dimensions (72 inches wide, 84 inches long) are best suited for taller people, or for narrow bedrooms where their more slim profile will fit in better aesthetically.How big is Shaq O Neal's bed? ›
In honor of Shaquille O'Neal's 45th birthday, we thought it would be fun to take a look at the size of his bed! Believe it or not, Shaq's bed is actually quite large. It is 15 feet wide and 30 feet long! That's a lot of space for one person!What is a 7ft bed called? ›
7 foot King. 5' x 7ft / 150cm x 215cm. Extra Long King. 5' x 7'3" / 150cm x 220cm. Super King.How big is a super Caesar bed? ›
Answer: a Super Caesar mattress is 275cm wide and 215cm long, or 9' by 7'. Although it does not have to be this length, as we can also make 6'6" (200cm) and 8' (245cm) lengths among others.How big is a Wyoming king bed? ›
|Wyoming king||Alaskan king|
|Width||84 inches||108 inches|
|Length||84 inches||108 inches|
|Recommended room size||12 feet by 12 feet||16 feet by 16 feet|
One notable feature of the Alaskan king is its larger size and unique shape—it's a supersized square! Length – 108 in. Width – 108 in. Overall size – 11,664 sq.
In California King vs Alaskan King, the Cal king is smaller than the Alaskan mattress. The Alaskan mattress is 24 inches longer and 36 inches wider than the Cal King mattress. While a California King measures 72 inches wide and 84 inches long, the Alaskan King bed measures 108 inches by 108 inches, i.e., 9 feet.Why is it called a Wyoming King? ›
A Wyoming king mattress is the smallest of the oversized state-named king mattresses. But don't be fooled, it's still pretty big. Named after the state of Wyoming, it's one of the more popular options for custom-sized beds.Whats bigger than a California King? ›
The Alaskan king bed is 24 inches longer than the California king, the longest standard mattress, and 32 inches wider than the king, the widest standard mattress.What is an empire bed? ›
An Emperor size bed is 215cm by 215cm or 7 foot by 7 foot. It is the largest size of bed available in the UK and Ireland, i.e. it is the next size bigger than a Superking.How big is a California King? ›
The California king dimensions (72 inches wide, 84 inches long) are best suited for taller people, or for narrow bedrooms where their more slim profile will fit in better aesthetically.