King Bed Size: What Exactly is the Size of a King Mattress? (2023)

Vontom mayo


ruth hamilton


A clear guide to the size of a king mattress in the US and the different king bed options available

King Bed Size: What Exactly is the Size of a King Mattress? (1)

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

Are you buying a new mattress? So it's important to make sure you buy the correct size. And that can get a little complicated. As with clothing and footwear, typical mattress sizes often vary greatly between countries.

Just as "size 10 shoes" are different in the US, UK and EU, the meaning of "king size mattress" is not the same in the US if you're on the other side of the Atlantic. So even if you think you've found itbest mattress, after delivery, it may not be the right size for your needs.

That is, if you have seen a bargain in thesale of mattresses- and there are some great onesBlack Friday mattress dealsavailable this year - you want to act fast and not spend a lot of time researching. To help you out, we've answered all of your questions about sizing a king mattress and the different king-size options offered in the US and UK below.

What are the dimensions of a king size bed?

In the US, a king bed is 76 inches wide and 80 inches long (or 193 cm wide and 203 cm long). In the UK, a king-size bed is 60 inches wide and 79 inches long (or 150 cm wide and 200 cm long).

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King mattress dimensions (width x length)
NameUnited States (imperial)US (metric)Great Britain (imperial)Great Britain (metric)
super sexyN / AN / A71x79"180x200cm
Cal-König72x84"183x213cmN / AN / A
party king76x80"193x203cmN / AN / A
Split AC King72x84"183x213cmN / AN / A

What size is a king bed in the US?

A US king-size bed measures 76 inches wide and 80 inches long (approximately 193 cm wide and 203 cm long). It's one of the largest sleeping options for two, making it a good choice for couples who are taller, like to be apart, or have a child or pet in bed regularly.

US-Queen- vs. Kingsize-Bett

If you're short on space, the next size after a US King (76 x 80 inches / 193 x 203 cm) is a US Queen (60 x 80 inches / 152 x 203 cm). A US Queen is also designed for two people and is the same length but narrower by 16 inches. A queen bed is perhaps the most popular bed size for couples, and although it is smaller, it is large enough for many couples. Check out our guide for more details.Queen vs King Matratzen.

There is a smaller bed size for couples: a double bed, which is 54 inches wide and 75 inches long (approx. 137 x 191 cm). which we will cover next.

Alternatively, if move transfer is a problem for you, you can try a split king. This has the same dimensions as an American king, but split into two mattresses of the same size, which sit next to each other on the same bed.

(Video) King Mattress vs California King Mattress - What's the difference?

A split king may sound strange, but it's popular with couples who have very different sleep habits or hours of sleep (for example, if you work shifts). Since every mattress is different, this means that one person moving is less likely to disturb the other. On the other hand, the space between the mattresses can be uncomfortable if one or both of them roll to the middle. Also keep in mind that you will need special bedding.

King Bed Size: What Exactly is the Size of a King Mattress? (2)

US King vs. British King

While you might expect "king" to mean the same thing in the US and UK, they actually have different dimensions depending on which side of the Atlantic you live on. In terms of width, they're pretty similar: the UK King is just an inch narrower at 79 inches (200 cm) than the US King at 80 inches (203 cm). Where the two versions really differ, however, is in length. The US King is 76 inches (193 cm) long, while the UK King is more than 20 percent shorter at just 60 inches (150 cm).

How big is a king bed in the UK?

A UK king size bed is shorter than a US king size bed (see above). A British king is 60 inches wide and 79 inches long (or 150 cm wide and 200 cm long). That makes it a significant jump in size from a UK double bed, measuring 53 x 75 inches (or 135cm x 190cm), making it a great option for couples who like to spread out. and have plenty of bed space, especially when you often invite children or pets to come aboard.

If you want even more space, the next size is a UK Super King measuring 71 x 79 inches (or 180cm x 200cm). However, you need a fairly large room to accommodate a bed of this size, so for most couples, a king bed will be the sweet spot among the rooms you have.inthe bed and the room you havearoundbed.

What size is a super king size bed?

You only find a super king in Britain. It is the next step up in British actual height, measuring 71 inches by 79 inches (or 180 cm by 200 cm). That makes him 11 inches (30 cm) wider but no longer than a British king, who is 60 inches wide and 79 inches long (or 150 cm wide and 200 cm long). The closest US equivalent is the California King, which is only slightly larger at 72 x 84 inches (or 183 x 213 cm).

The super king bed is a good option for couples with money to spare who like to stretch out on their bed and have a large room to accommodate it. Conversely, most couples with standard-size bedrooms may not find enough space for a king-size bed, and a UK king-size bed is a more practical option.

Although the Super King is the largest of the standard UK sizes, that doesn't mean you can't buy bigger. Many brands and retailers sell oversized beds under names like "Caesar" or "Emporer." It's just that there's no industry-wide agreed-upon size convention or nomenclature for these larger beds.

What size is a cal king bed?

As the name suggests, the California King (also known as the Cal King, CA King, or Western King) is found only in North America. The only way to see a bed with that moniker in the UK or Europe is to export it.

A California king mattress measures 72 by 84 inches (183 by 213 cm) and is the same size as two double XL mattresses combined, making it a good choice for couples. It's slightly narrower than a US King (72 inches by 76), but also longer (84 inches by 80), making it ideal for those taller than 6'.

If you and your partner sleep differently or at different times of the night (for example, work shifts), you can get a split version of the California King. It has the same general dimensions, but is divided into two mattresses, each 90 cm wide, which are placed side by side. This minimizes motion transfer, although some find the gap between the mattresses uncomfortable when lying cross-bed on the bed.

The Golden State doesn't have a monopoly on super-sized bed names. there are those tooWyoming-König, which measures 84 by 84 inches (213 by 213 cm). This makes it as long as the California King, but 12 inches wider.

there is theking of texas, which measures 203 x 249 cm (80 x 98 inches), making it a popular choice for very tall people. And for maximum sleeping accommodations, theKing of Alaskameasures a generous 274 x 274 cm (108 x 108 inches); a good two feet longer than the California king.

King Bed Size: What Exactly is the Size of a King Mattress? (3)

(Video) Mattress sizes - What are the different dimensions?

Matratzenabmessungen Cal King vs. King Size

A US king-size bed measures 76 inches wide and 80 inches long (approximately 193 cm wide and 203 cm long). A California king-size mattress measures 72 x 84 inches (183 x 213 cm), which is four inches narrower and four inches longer than a US king-size mattress. Because of this, it works well for couples where one or both are taller than average.

What size is a split king bed?

A split mattress is exactly what it sounds like. Instead of one big mattress, you get two separate mattresses placed side by side on the bed. For example, a split king bed has the same overall dimensions as a US king bed (76" x 80"), but consists of two 38" x 80" mattresses instead of one full-size.

Likewise, a split Cal King has the same dimensions as a Cal King (72" ​​x 84") but consists of two 36" x 84" mattresses instead of one full-size mattress.

Split mattresses are popular with couples where one partner tosses and turns throughout the night. In a normal bed, this would result in the transmission of motion through the mattress, waking the other partner. On a split mattress, however, they feel much less disturbing movement in bed.

Split mattresses also work best when one partner prefers a softer mattress and the other prefers a firmer one, as the two mattresses can have different levels of firmness. On the other hand, split mattresses require special sheets, and the space between the mattresses can be uncomfortable when you settle on them.

Reina contra Kingsize-Bett

Queen and king sizes are different in the US and UK, so it's always worth checking what size a retailer is talking about.

In the US, a queen-size bed is 60 inches wide and 80 inches long (or 152 cm wide and 203 cm long). In the UK, a queen size bed is the same as a small double bed, so it is 48 inches wide and 75 inches long (or 120 cm wide and 190 cm long).

In the US, a king bed is 76 inches wide and 80 inches long (or 193 cm wide and 203 cm long). In the UK, a king-size bed is 60 inches wide and 79 inches long (or 150 cm wide and 200 cm long).

King Bed Size: What Exactly is the Size of a King Mattress? (4)

tom mayo

Tom writes regularly about sleep for Tom's Guide and our sister site Over the years, he has tried a range of mattresses, duvets and pillows and, as he suffers from back pain, he wants to find those that offer the most support. Additionally, sleep hygiene and providing guests with proper bedding have become an important part of his daily life as he runs a successful Airbnb business.

With contributions from

  • ruth hamiltondream editor
(Video) What is King Size and Queen size bed?

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(Video) What’s the difference between a King and a California king mattress ?


    What is the actual size of a king size mattress? ›

    The queen mattress dimensions are 60 inches (5 feet) in width by 80 inches (6 feet, 8 inches) in length. The king mattress dimensions are 76 inches (6 feet, 4 inches) in width by 80 inches (6 feet, 8 inches) in length.

    Do two twins make a king? ›

    No, two twin beds do not make a king bed. Twin beds are 5 inches shorter than king size mattresses, so will make a shorter mattress. But, two twin XL beds will make a king bed. They are 38 inches wide by 80 inches long, and combine to be the length and width of a standard king size mattress.

    How big is a king size bed compared to a king? ›

    Mattress Sizes and Bed Dimensions (2023)
    Mattress SizeDimensions (Width x Length)
    Queen60″ x 80″
    King76″ x 80″
    Split King38″ x 80″ (each mattress)
    California King72″ x 84″
    6 more rows

    What are the different sizes of king mattresses? ›

    The measurements of a regular king are approximately 76 inches in width and 80 inches in length. The measurements of a California king are a bit longer and not as wide, the dimensions are approximately 72 inches wide by 84 inches long.

    How much is a good mattress king size? ›

    The average king mattress costs around $1,000 or more, depending on how premium of a mattress you're looking to buy.

    What is a California king bed? ›

    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.

    Can 2 single mattresses make a king? ›

    The quick answer is yes you can have two separate mattresses, known as a zip and link bed, which can then sit on one kingsize mattress base. Zip and link mattresses are great to reduce transference between sleepers leading to almost no movement when your partner turns during the night.

    What happens if a king has twin sons? ›

    Whichever twin comes out first is the heir, assuming there's no male primogeniture rules in place. So, for instance, if Prince Charles and Princess Anne had been twins, Charles would be the heir regardless of who came out first.

    Are there two different size king beds? ›

    There are two types of king beds. The eastern king beds are what most people consider a regular sized king bed. These will fit a mattress approximately 76" wide and 80" deep. California king beds are more narrow when looking from the front of the bed. They will fit a mattress approximately 72" wide and 84" deep.

    Are all king size mattresses the same dimensions? ›

    76" x 80" King Size mattresses are great for couples looking for luxury comforts, more sleeping space, or room to share with children and pets. King-sized mattresses measure 76" X 80" and they are the largest mattress size by US standard manufacturing.

    How do I choose a king size bed? ›

    The regular king size mattress is the most popular type of king size bed in the market. This king size bed size in feet is 6 feet (76 inches) wide and 6.5 feet (80 inches) in length. If the queen is not spacious enough while your room cannot accommodate a huge bed, then a regular king size bed would be the best option!

    What is a hotel king size bed? ›

    Depending on the room size, hotels will have different bed sizes. For example, a queen bed is 60 inches wide and 80 inches long, while a standard king is 76-inches wide but only 80-inches long. However, hotel kings usually are 72 inches by 84 inches.

    Which is bigger King or California King? ›

    While your average king-size bed is 80 inches long, California kings are 84 inches long. King-size beds are 76 inches wide while California King beds are 72 inches wide. Given these dimensions, king-size beds are still slightly bigger.

    What is the best size comforter for a king bed? ›

    Because a king mattress is 76 inches wide by 80 inches long, a king comforter should have a few more inches lengthwise and widthwise, at least. Often, it's around 100 inches wide and between 85 to 96 inches long. You want a comforter that can hang at least a few inches over the side of your bed.

    What's the difference between king size beds? ›

    A standard king is 76 inches wide and 80 inches long, while a queen is 60 inches wide and 80 inches long. That means king beds are the same length as queen beds but 16 inches wider, making the surface area of a king bed 1,280 square inches bigger than a queen bed.

    Are box springs necessary under a mattress? ›

    Most modern mattresses including mattresses in a box do not require a box spring. In fact, traditional box springs don't provide the rigid support needed for many newer foam and latex beds. Box springs are primarily designed for use with coil-based mattresses.

    Whats the best thickness for a mattress? ›

    If you are a side sleeper, a 12 to 14-inch thick mattress most likely will provide the extra cushioning you need. Back sleepers are often comfortable on a 10 to 12-inch thick medium-firm mattress, while stomach sleepers may need a 10-inch mattress firm enough to prevent sinkage beneath your abdomen.

    Which brand king size bed is best? ›

    The Best King Mattresses
    • Best Overall. DreamCloud Mattress. 5.0 /5. ...
    • Best Value. Nectar Mattress. 4.9 /5. ...
    • Most Comfortable. WinkBed. 4.7 /5. ...
    • Best Luxury. Saatva Classic. 4.7 /5. ...
    • Best for Side Sleepers. Nolah Evolution 15. ...
    • Best for Couples. Nectar Premier Copper. ...
    • Best Cooling. Brooklyn Bedding Aurora Luxe. ...
    • Best for Back Pain. Bear Hybrid.
    Jan 25, 2023

    How much should a nice mattress cost? ›

    Mattress Cost

    Budget: $1,000 to $1,500. Average: $1,500 to $2,000. Luxury: >$2,000.

    Is it better to sleep on a hard mattress or soft? ›

    Body weight

    Generally speaking, heavier people prefer firmer mattresses. Soft foams may sink in too much for comfort and adequate support. Conversely, lighter sleepers may sink in less and find firm beds to be uncomfortably hard, so they generally prefer soft to medium firm options.

    Is California King cheaper than King? ›

    California king mattresses usually cost more than regular king mattresses. From the mattress, bed frame, bedding, more specifically the sheets and mattress protector, you'll spend more money getting a Cal king.

    Which bed is better king or California King? ›

    If you are over 6 feet tall, the longer length of a California king size mattress will suit you more than a regular king size mattress. With an additional 4 inches of length, a Cal king bed is popular for taller sleepers who need the extra legroom.

    Is an Alaskan King bigger than a California King bed? ›

    In comparison to a California King, an Alaska King is bigger. (A California King is 84” long by 72” wide; a King is 80" long by 76" wide; an Alaskan King is 9' long by 9' wide.)

    Do all king mattresses sag? ›

    All mattresses will sag eventually, and this effect will have a significant impact on the bed's feel and comfort.

    How many Twins make a king bed? ›

    A typical king size mattress measures 80 inches in length. To make a king mattress out of two twin beds, you must use two twin XL mattresses. These beds are 80 inches long and may be placed side by side on a standard king-size box spring or bed frame.

    How do you fill a gap between two mattresses? ›

    The quickest and cheapest solution to eliminate the seam between two mattresses is a mattress wedge, which the French call pont d'amour - love bridge. It is also known as a bridge connector or a mattress gap filler.

    How many mistresses can a king have? ›

    Adultery was still frowned upon, and kings could be deposed if they appeared to act too immorally, but people mostly tolerated a king having one mistress at a time.

    What is the hereditary rule of the king? ›

    Monarchy is a form of government where the king or queen rules the country. They take up the throne on a hereditary basis that is a new king or queen belongs to the same royal family.

    Is having a king hereditary? ›

    Britain has a hereditary monarchy. This means that the role of king or queen is passed down in the family. There are special rules to decide who can inherit the crown. The monarch's first child is first in line to the throne.

    Why is it called a California king? ›

    Why is it called a California king? The California king got its name from where it was invented—Los Angeles, California. The creator of the mattress thought most Californians had houses big enough for a bed six feet wide and seven feet long.

    What size is a king size bed in feet and inches? ›

    A standard king size bed is 5 feet wide and 6 feet 6 inches long (152 x 198 cm). Please note: from a king size bed and upwards the standard length increases by 3 inches to 6 feet 6 inches or about 2 metres.

    Is a king size mattress completely square? ›

    In most countries, the size of the King mattresses is either 76 inches x 80 inches, or 76 inches x 60 inches. As evident from the dimensions, the King mattress is square in shape.

    Is a king bed bigger than a California King? ›

    While your average king-size bed is 80 inches long, California kings are 84 inches long. King-size beds are 76 inches wide while California King beds are 72 inches wide. Given these dimensions, king-size beds are still slightly bigger.

    Why is queen size bigger than king? ›

    Difference Between King And Queen Size Mattresses

    King and queen size mattresses both offer you the same space in length—their main difference lies in the width. The king (a.k.a. eastern king size) offers an extra 16 inches of width than the queen and is considered best for couples who enjoy more space.


    1. What's the Difference? California King Vs King Mattress
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    2. Queen Bed vs King Bed
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    3. How big is a California king mattress?
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