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What Size Is A King Bed Mattress

Split King Size Bed Dimensions

What are the Dimensions of a King Size Bed? How long and wide is a King Size Adjustable Bed?

A Split King size mattress uses two identical-sized mattresseseach 38W x 80Lwhich equals the size of a complete King size mattress. Sleepers who benefit from a Split King bed often have very different sleeping preferences than their partner. The split mattress allows sleepers to have a mattress that is individually right for them, without sacrificing the sleep of their partner.

Some Split King beds are joined at the bottom half of the mattress and only split at the top. This style is more for sleepers who do not have different sleep preferences, since the interior of the mattress is the same throughout. Some couples may also opt for a flippable mattress that offers a different firmness on each side, such as the Layla mattress.

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The benefit of this style of mattress is that, when used on an adjustable frame, each side of the mattress can move independently, allowing sleepers to sit up or lie back without disturbing their partner. The obvious drawback here is finding sheets to fit this style of mattress. These sheets are usually very expensive and may be hard to find.

Ready to start looking at your options? Nectar has a Split King adjustable frame that will allow you and your partner to sleep in your preferred sleeping positions. Make sure to add the adjustable frame to your cart with any mattress purchase:

What Size Is A Small Single Bed And Mattress

Small single beds and mattresses are ideal for younger children or the petite. They measure in at 75cm wide and 190cm long. In imperial dimensions, this is equal to 2 feet 6 inches wide and 6 feet 3 inches long. Small single bed frames and mattresses work well in smaller bedrooms where space is tight. They are also a good transition bed for young children moving from a cot into their first grown-up bed.

Best for: Young children as a ‘first grown-up bed’, small rooms and guest beds

Super Single Bed Size / Three

Super Single beds are a throwback to the 1920s. Designed for one sleeper but often accommodating two, these beds are exceedingly rare on the market today. Only antique bed frames and military living quarters will require this size, so Gotta Sleep doesnt carry it. You’ll like to have to find a custom or specialty mattress store to get a mattress this size that is both comfortable and new.

Super Single bed dimensions measure 48″ × 75″. The average width of a single bed is typically 48″. The average length of a single bed is 75″.

The Pros and Cons of a Super Single Mattress Size / Three-quarters Mattress Size


  • The cost of a Super Single is typically lower than a Queen.


  • These mattresses are very rate and difficult to find.

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Full Xl Size Bed Dimensions

54 inches by 80 inches

Minimum recommended room size: 9 feet 6 inches by 10 feet 6 inches

The full XL size has an extra 5 inches in length than a standard full. The extra legroom makes it a good fit for taller individuals sleeping by themselves. It can also be a good choice for a spare bed in your guest room, although some hosts prefer to offer a standard queen size mattress to accommodate couples.

Twin Xl Size Bed Dimensions

How Wide Is A King Size Mattress

38 inches by 80 inches

Minimum recommended room size: 9 feet 6 inches by 10 feet 6 inches

This size is 5 inches longer than the standard twin size, making it a preferred choice for taller individuals. The twin XL size is always a good option to accommodate extra guests on short notice. Since they dont require much space and are less expensive than a queen or a full, it wont be difficult to have one as a spare.

38 inches by 75 inches

Minimum recommended room size: 7 feet by 10 feet

The smallest of all standard sizes, this is one of the most common beds available. The twin size mattress is good for children and teens alike, accommodating children in their growing stages.

However, a twin or single size mattress may not be a good fit for a full-grown adult. It is a good size to fit into smaller rooms, and ideal for bunk beds, too.

Please note: Our Amerisleep twin size mattresses measure 38 inches by 74 inches.

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Amerisleep Vs Other Mattress Types

Slow to respond, results in “stuck” feeling Responsive but prone to sagging Very responsive
Little to no pressure relief Good pressure relief
More breathable than traditional memory foam Cooling thanks to the coils in the base Traps heat Cooling thanks to the coils in the base Cooling as long as top layers are aerated
Foam quality Usually made with poly-foam pillow tops Foam usually made with petrochemicals Not always consistent, depends on the type of foam used in the top layers Depends on the type of latex used synthetic latex breaks down faster than all-natural

Where To Find Specialty Mattresses

Most companies do not sell oversized mattresses. Instead, oversized mattresses and other specialty beds are rare to come by, so youll need specialized boutiques or companies to produce them. However, when custom-ordering, you can customize specific details such as the mattress filling, thickness, and firmness.

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Can Two Adults Sleep Comfortably On A Full Sized Bed

Technically, two adults can fit on a full size bed, though its hardly enough room for them to sleep comfortably. Keep in mind, a full mattress is only 54 by 75 inches , giving each person 27 inches of wiggle room to themselves and only 75 inches of length. On a full size bed, there will be little room for two people to stretch out and sleep in their preferred position.

Individuals sharing a bed should at least use a queen size bed. However, a king or a super king will provide even more comfort and individual space for couples and co-sleepers.

King And California King Differences

Bed Size Dimensions – What Size Mattress Should You Buy?

A King mattress is going to be wider while a California King is going to be slightly longer. Both have the same overall surface area. Here are the key differences between the King and California King:

  • A King mattress is 76 x 80. This is the most common size and the dimension is good for most couples and people who just need some extra space along the edge of the bed. This is 16 inches wider than a standard Queen size mattress and the same length as a Queen.
  • A California King is 72 x 84. This model often works for taller individuals who need some extra foot room. The California King takes 4 inches from the width and adds that to the length. This would be 12 inches wider than a standard Queen and 4 inches longer.

Both of these can be split into a form of split King, though it is more commonly found in the standard King sized model.

View Our Full Comparison: King vs. California King

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Split King Size Bed Dimensions: 38 X 80

A Split King mattress is 38 inches wide and 80 inches long individually and 74 by 80 inches when placed together. It is called a split king as it is the same dimensions as a king size mattress, but is split in the middle to allow couples with different sleeping preferences to sleep together. It is used with an adjustable bed frame and can be installed easily. It limits motion transfer to a very large extent, helping light sleepers fall asleep easily.

Location Of The Bedroom

Maneuvering a king or California king size mattress may be difficult for some, so when buying a new bed be mindful of the size. If your bedroom is not on the first floor, consider the width of the stairways and how challenging it might be to get the mattress from one floor to another. Bed in a box mattresses are a solution to this once-common problem, but some beds can still be difficult to maneuver.

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How Large Of A Room Is Needed To Fit A King Size Bed

Based on the most purchased King room, the Standard King, the minimum room size is 12 feet by 9 feet 10 inches. Most designers will tell you that it takes at least 12 inches to move around the bed.

King bed comforterWhat are the measurements for a king-size comforter?King of the East. A standard or oriental king size bed is the most common king size bed.King of California. The California or Western King measures 72 by 84 inches, making it shorter and wider than a standard King.Choose the right blanket. Always read all labels to choose a king size comforter.What are the measurements of a California King comforte

King Size Mattress Size In The Uk & Ireland

Guide: Why Buy a Split King Mattress Bed in 2020

Although most manufacturers in the UK and Ireland tend to abide by a standardised king bed size, there are no set dimensions.

This means that the size can differ between manufacturers. Also, manufacturers are legally allowed a tolerance of +/- 2cm of the quoted mattress size.

In the UK and Ireland, a king size mattress usually measures 150 cm x 200 cm. However, this can vary slightly.

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Bed Sizes And Mattress Dimensions

Australia has seven commonly available mattress sizes. Single bed, Long Single, King Single, Double size, Queen size, King size and Super King size.

Single: Ideal for children and teens.

Single XL: Ideal for one person when space is at a premium. Also known as Long Single and Single Extra Long.

King Single: Ideal for growing children, teens and mature single sleepers.

Double: Cosy for two sleepers, roomy for one.

Queen: Ideal for couples and the bed size most commonly sold.King: Becoming more and more popular because of its generous sleep area.

Super King: Not very common as a mattress size, but more popular for bed linen. Created because people often buy a doona and doona cover one size bigger that their bed size. .

Below you can find the exact sizes for each bed size. If you are looking for the European bed size, US bed size or UK bed size, please scroll down.

Maybe you are wondering if you need to buy a new mattress because you wake up with a sore back or neck. More often than not, the neck and back pain people feel comes not from your posture during the day, but how your head rests on your pillow at night. Sleeping on the wrong pillow can make achieving good quality rest a near impossibility!

King Vs Twin Size Bed

A twin size bed is one of the smallest mattresses available for purchase, measuring 38 inches wide by 75 inches long. Twin size mattresses are the most popular mattress size for young kids and can commonly be found in college dorm rooms. The standard twin size bed will not suit the average young adult. King size beds are double the size of the average twin size mattress.

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What Size Is A Double Bed And Mattress

Measured in metric units, a standard double bed and mattress is 135cm wide and 190cm long. Converted to imperial units, this equates to 4 feet 6 inches wide and 6 feet 3 inches long. A standard double bed and mattress is designed to sleep two adults comfortably. This is the most common and widely available size for all bed types in the UK.

Best for: Comfortably fit 2 people and for small to average sized bedrooms

What Bed Is Bigger Than A King

Best King Size Mattress 2021 (Top 6 Beds!)

Bed sizes larger than a king include:

  • Emperor: 84 by 84 inches
  • Super Emperor: 90 by 84 inches
  • Caesar: 96 by 84 inches
  • Super Caesar: 108 by 84 inches

These oversized beds are often for large families and co-sleeping. Similar to the super king, these oversized beds, as well as their accessories and foundations, are not readily available and often need specially-made.

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How Big Is A California King Size Bed

A standard California king bed usually measures 72 inches wide and 84 inches long. That makes them 4 inches longer, but 4 inches more narrow than a standard king. Some mattress retailers may differ an inch or two in the actual measurements, though.In other words, Cal kings give sleepers some extra length when compared to standard kings, but still enough space for two people to spread out comfortably.Read on to find out more about California king size mattresses, including information about how they compare to other mattresses, the benefits of this size and some common questions we hear from our customers.

What About A Split King

For couples with different sleeping styles, choosing a split king mattress may be ideal. This mattress size is the same as a regular king mattress, but its actually made up of two separate twin XL mattresses placed side by side. Most couples pair it with two adjustable bases to allow each person to customize their comfort settings. Plus, two separate bases and mattresses are much easier to move than one large unit, whether thats to a different side of the room or to a new home.

Founder – GhostBed

After undergoing three neck surgeries, Marc knew what it was like to live and sleep in constant pain. In 2001, after searching fruitlessly for a comfortable pillow and mattress that supported his neck and back … Learn More

Quality Comfort Cooling

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The Buying Guide: Our Advice On How To Buy The Heated Mattress Pads For King Size Bed

Before you invest your hard-earned money into a product, you should properly educate yourself about the available products and the best alternatives in the market. We have compiled the list of factors you should consider before buying a heated mattress pads for king size bed to make your task easier.

Like almost any product, before buying a heated mattress pads for king size bed, you should ask yourself these few questions:

  • How reputable are heated mattress pads for king size bed in comparison to market competitors?
  • How durable and long-lasting are they, and how easy is it to service or fix them if something goes wrong?
  • Why is it worth buying heated mattress pads for king size bed instead of other products?
  • What are some key features and highlights of heated mattress pads for king size bed? Are those features worth it for your needs?
  • What are some positives and negatives of heated mattress pads for king size bed, and how do they affect your user experience?
  • Where can you buy heated mattress pads for king size bed and service or repair it if necessary?

These are just some of the questions that you need to seek the answer to when purchasing the product. It is essential to keep in mind that you may have further queries and questions, as you should.

These are just a few considerations that we consider absolutely crucial. You can find detailed answers to almost all of your questions by some internet research or even by trying out the product at the store.

What Size Is A Super King Size Bed And Mattress

Best King Size Mattress Reviews 2018 With ...

Measuring in at 180cm wide and 200cm long or equally 6 feet wide and 6 feet 6 inches long, the super king is the largest of all standard UK sizes. The super king sized bed provides an abundance of space for two sleeping adults perfect for couples who prefer their own space. Nothing beats a Sunday morning enjoying time with your family all squeezed in together .

Best for: 2 people for large bedrooms that value space when they sleep

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Your Best Night’s Sleep Awaits

We engineer our mattresses to offer superior comfort and support. Side, back, and stomach sleepers alike can wake up rested and energized thanks to innovative Bio-Pur®, a breathable,soft layer made to cushion all your pressure points. The other layers work together to give you the healthiest sleep possible.

Full Mattress Dimensions 54 X 75

Full size mattresses are sometimes referred to as double mattresses or double beds. These mattresses are 54 inches wide by 75 inches long. They work well for one person but can fit two cozily if you have a smaller bedroom. This is a good transition mattress to update a childs room as they grow older and taller.

Room Size: The recommended room size for a full bed begins at 9 feet by 10 feet to 10 feet by 12 feet, depending on how much furniture you have and how much walking room you want around the bed.

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Full : 54 Wide X 75 Long

The Full is also known as a Double. Unfortunately though the term Double doesnt quite suit this size because 54 divided by two is 27 of space per person, which is not much at all when sharing. The Full size, however, is an excellent option for single use. Like other mattresses of a similar length, this one would best suit someone under 6ft.

Mattress Sizes And Dimensions Faq

6 Mattress Sizes – Tips to Avoid Picking the Wrong Mattress Size


The most preferred bed size bed for couples is typically a King or California King mattress. These sizes allows for each person to have the most room on the bed. Queen beds are also a popular option and provides a decent amount of room for couples. Mattresses any smaller will require two people to sleep closer together and have less space.


Bed and mattress are terms that have been used interchangeably for a while now. However, bed is usually used to refer to a set, while mattress is for one single item. When someone uses the word bed, they can mean a variety of things such as a mattress and foundation, or mattress with a bed frame and foundation. Bed accessory manufacturers do not typically have a standardized sizing to follow, so its important to find out if it will fit your mattress.


Two regular twins put together are just two twin beds put together. If you put two Extra Long Twin mattresses together, it does equal the size of the King bed dimensions. This is also called a Split King mattress, and can be a great option if you need a different comfort level than your partner. This is a great option for guest rooms for versatility if you want to add an additional bed for guests. Just know two regular twin beds are too short for King sheets, so you will need to purchase a sheet set for each.

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