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What Are The Standard Dimensions Of A King Size Mattress

Is A California King Bigger Than A King Mattress

Mattress sizes – What are the different dimensions?

A misconception in the mattress industry is that a California king is the larger mattress compared to a king. However, Cal king beds have less surface area than a king. Its not a huge difference, but you may feel differently based on your specific needs. For example, if you, your sleep partner, or both of you are six feet or taller, a California king size might be the best choice.

Comparing King Size Mattresses

There are quite a few different types of king size mattresses available to choose from. In the table below, you can see a breakdown of the standard mattress sizes the industry has to offer. From the average, standard queen size mattress to the California king size mattress, see which one is best for your lifestyle.

Mattress Type

  • Motion isolation

King Size Mattresses To Consider

The quality of the bed is as important as the dimension itself, so before choosing a mattress, it is important to think about the material of the mattress. A few popular ones include:

  • Innerspring: This is the most popular type of mattress since it is the most affordable and provides enough comfort for sleepers.
  • Futon mattress: Futons are cotton filled mattresses that offer people a supportive and comfortable sleeping experience.
  • Water mattress: Water beds are another popular type of mattress that comes with many medical benefits. Many people are now considering water beds because of how comfortable these are.

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Bed Sizes And Bed Dimensions

Comfortability and support are major concerns of a sleeper when choosing the perfect type of bed that would suit his/her sleeping preference. It is important to note that beds come in varied sizes and the knowledge of the bed sizes will aid in selecting the right bed size for you. On Gotta Sleep today, we dive into those many sizes and shapes.

Bed or mattress sizes vary from country to country. In this article, we will give details on the mattress sizes and what should be considered before going for a particular bed size that would be perfect for the bedroom.

Three-bed standard dimensions will be considered in this article.

  • US Bed standard sizes
  • UK or Ireland Bed standard sizes
  • European Bed standard sizes

Whats The Difference Between Pillowcases And Pillow Shams

Bed Sizes (2021)

Pillowcases are made of the same material as bed sheets. Most sheet sets come with two pillowcases in the same color and fabric as the sheets. While pillowcases are designed for sleeping, pillow shams serve a more decorative purpose.

Pillow shams are typically made of a heavy, coarser material that matches the bedspread or duvet cover. Depending on the fabric, pillow shams may not be comfortable for sleeping. Pillow shams also have a slit that runs across the middle of the back of the pillow and often closes with an overlapping piece of fabric.

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How Wide Is A Twin Bed

The average width of the single bed is 39″.

The Pros and Cons of a Twin Mattress Size


  • The cost of a twin size mattress is less than that of a larger size, though prices can vary depending on the quality selected.
  • Gives parents with young children the opportunity to provide a mattress that suits their needs and is not too big.
  • Can be a very great investment for those with a smaller amount of space to allow for their bed.
  • The Twin mattress dimensions measure 38 inches wide and 75 inches in length.
  • Available in both high quality and lower quality models.
  • Many bed frames that accommodate multiple children fit one or more twin size mattresses.
  • Twin bunk beds can save even more space and be a fun sleeping environment for children.


  • Often the length of a Twin mattress is not great enough to comfortably fit a full-sized adult.
  • Twin mattresses are not ideal for more than one person sleeping at a time.

Queen Size Bed Dimensions

A Queen size mattress is 60W x 80L. This is the most popular mattress size in the United States right now and is a comfortable fit for single active sleepers, couples, and those who may share the bed with children or pets. To comfortably fit a Queen mattress, it is recommended that your bedroom be at least 10L x 10W.

Some specs to consider:

  • For single sleepers, that is 60 of sleeping space.
  • For partners, that is 30 of sleeping space per person .
  • A 6 tall sleeper would have 8 of extra space if fully extended on this mattress.

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Similar Beds Sizes By Country:

Many countries have different bed sizes. A comparison of similar King bed sizes in different countries

  • US: 193 cm x 203 cm
  • UK: 180 cm x 200 cm
  • Australia: 183 cm x 203 cm
  • New Zealand: 183 cm x 203 cm
  • Continental Europe: 180 cm x 200 cm
  • Scandinavia: 180 cm x 200 cm
  • Japan: 170 cm x 195 cm
  • China: 182 cm x 212 cm
  • Thailand: 183 cm x 198 cm
  • Singapore: 183 cm x 191 cm
  • Brazil: 193 cm x 203 cm
  • South Africa: 183 cm x 188 cm

Who Will Be Sleeping In The Bed

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Children, depending on age, will likely be most comfortable in the following mattresses:

Beds with two adult sleepers and children or pets will likely be most comfortable in the following size mattresses:

  • California King

Sleepers who want a mattress that will work with an adjustable frame should consider the following mattress sizes:

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King Size Mattress Size In The Uk & Ireland

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.

Things To Consider Before Choosing A Mattress

Various other factors affect which mattress size is the best for you. Your budget, bed size, and how many people the mattress can accommodate are important considerations. If you are still unsure, you can use our trial period of 365 nights to find the perfect fit for you! Read on to see what other factors to look at before making your decision.

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Or Single Xl Bed Size

Twin XL bed dimensions measure 39″ × 80″. The average length of Twin XL bed is 80″. The average width of the Twin XL bed is 39″.

As a twin, the mattress is the same width but is 5 inches longer to accommodate taller sleepers. This size is commonly used for growing teenagers who are close to 60 and in dorm rooms where there are more athletes.

Its a longer economy size thatll fit well in the spare room, or in the small apartment bedroom, you’re sleeping in, without being too short for your legs. Or whatever pet you have slept at the foot of it.

The Pros and Cons of a Twin XL Mattress Size


  • The cost of a Twin XL is lower than most mattresses.
  • This mattress size can be perfect for those who outgrow a Twin, but do not have the room space for a Queen size mattress.
  • If two growing children are sharing a room, two Twin XL mattresses will take up less space than upgrading to two Double mattresses.
  • The Twin XL can be found in many different qualities and price points. Bunk beds can be found to fit the Twin XL mattress dimensions.


  • Most people will not have this size through their entire adult life so an upgrade to a larger size will eventually be made. Because mattresses can last for so long, it may be more economical to skip this size and invest in a larger size to begin with. However, it is a good replacement for the Twin.
  • This size mattress only fits one full size adult in most cases.

Split King Mattress Sizedimensions: 38 X 80


A Split King mattress is two Twin XL mattresses put together, making it 76 inches wide and 80 inches long king size mattress. A split king mattress is popularly used with adjustable beds, and each side of the bed can have an independent setting. It limits motion transfer to a large extent, helping light sleepers fall asleep easily.

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Choosing The Right Size Bed

When it comes to quality of sleep and the style of your bedroom, bed size can make a real difference. Comfort should be your priority. With plenty of space to stretch out, roll around and starfish in total comfort. If youre buying a young childs bed, remember theyll need room to grow.

In terms of style, the wrong size can impact on the design of a room. Too big and the room can feel overcrowded. Too small and the bed will look out of place. It needs to be just right.

Small Single Size Bed Dimensions

30 inches by 75 inches

Minimum recommended room size: 7 feet by 10 feet

Single mattresses and twin mattresses have the same dimensions, so these terms are often used interchangeably. However, the twin size is much more common nowadays, so if you have your eye on a single bed, a twin is just what you need.

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What Size Is A Queen Mattress In Inches

Answer: 71 x 78 / 6 x 66 The term queen size when referring to beds actually came from America, and its the guys across the pond who define the size of these massive beds.

A queen size bed is a whopping 60 inches wide and 80 inches long when it comes to mattresses, so youll need a brilliant online delivery company to ensure it gets to you safely. And, just to confuse us all, queen beds are sometimes referred to as king beds in this country so check your dimensions carefully!

Can You Use A Piece Of Plywood Instead Of A Box Spring

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Yes, a piece of plywood cut to fit a mattress can make a suitable bed base. The plywood should be at least 0.75 inches thick to provide consistent support for your mattress. You can also look for a bunkie board, which is around 2 to 3 inches thick and often covered in upholstery to keep the mattress from sliding.

You can also use a plywood board with a box spring if you want. This allows you to use the box spring for added bed height while still supporting a memory foam or hybrid mattress needs. Remember, we dont recommend placing a memory foam mattress directly on a box spring because box springs are designed to only support innerspring mattresses.

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Types Of King Mattresses

Following the tradition of the California king, there are several additional oversized king options named for some of the other largest states in the U.S. These sizes are not as common as the California king and may cost more than a standard mattress. However, they may be the best options for co-sleeping families and couples sharing a bed with many pets.

  • Wyoming King: Measuring 84 inches by 84 inches, this square bed matches the length of a California king with extra width.
  • Texas King: A rectangular bed thats 80 inches by 98 inches, the Texas king is more likely to fit in a narrower bedroom.
  • Alaskan King: At 108 inches by 108 inches, the square Alaskan king is the largest oversized bed available.

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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What Are The Standard Sizes For A Pillowcase

The standard size of a pillowcase is 20 wide x 26 long. These pillowcases can fit a standard pillow but can also hold a smaller one. You can fold the extra material at the ends within the same case to make it look good.

Depending on the pillowcase design, the opening can be on one side or the back of the pillowcase.

As for the other bed sizes, here is how each pillow measurement is ideal for each bed size. You will notice that each pillows length is half as wide as the bed size measurement, except for the twin size. But the twin bed is too small for two pillows. It will look better with a single one wide enough to rest your head.

Uk Bed Sizes: The Bed And Mattress Size Guide

Mattress Sizes in Canada

So youre buying a new bed or mattress, but youre not sure about what the different bed sizes are. “Is there a standard size?” “Do I have to buy my bed frame and mattress at the same time?” “How big are king size bed dimensions compared to a standard double?”

Its enough to stress anyone out, which is why we thought wed put together this quick-reference guide to help you out.

In the UK, bed sizes are measured according to the size of the mattress they hold, which is a standard measurement. However, the actual dimensions of the bed frames can vary according to their shape and style, which is what can often cause confusion. A common mistake is to use the mattress size measurements for the required space, but you should always look at individual bed frame dimensions for exact measurements, as they will vary from frame to frame, and almost always be slightly larger than the mattress dimensions.

Most modern beds/mattresses sold in the UK are constructed using imperial dimensions but are generally sold in their approximate metric equivalents:

Bed/Mattress Size

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Crib Mattress Sizedimensions: 28 X 50

Crib size mattresses are 28 inches wide and 50 inches long . A crib size mattress is the smallest mattress size available on the market and is primarily designed for toddlers and small children.Because of its small dimensions, it can easily fit into a childrens room. It can also be placed in the same room as yours if the bedroom is large.

Bed Size Chart / Mattress Size Chart

If you’re in the market for a new bed, it can be hard to find one that fits your room and sleeping habits. Luckily, this article will help guide you through all those sleep-related decisions with our comprehensive mattress size chart! Whether you’re looking for something small like a Twin or if don’t want anything less than what California King has to offer we’ve got an option out there exactly right for your needs. So, stop by today and let us show off some of these fantastic mattresses so they’ll fit perfectly into any space around town.

274 cm x 274 cm This is the largest mattress available.

The sizes between coil and foam mattresses vary a bit, but there’s a particularly good reason! Innerspring coil mattresses are much harder and don’t squish around as foam mattresses do. As a result, and to make it easier to fit into frames and tuck sheets under them, they’re often just a touch smaller. This difference won’t be noticeable in your bed frame, so don’t worry!

The stiffer nature of the innerspring coil does have to be accounted for, but the manufacturers do that for you.

All these sizes have different intended purposes, and below we’ve listed those for you! Whether your baby is growing up and you want to get them a real bed to sleep in, or the old double you sleep on isn’t good enough for two people anymore, there are options for everyone.

  • Due to the risk of litigation, most mattress manufacturers do not offer this size of mattress.

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What Is The Most Popular Mattress Size

The most popular mattress size depends on your individual needs. Several popular sizes include twin, twin XL, queen, and king.

A twin mattress size is the best fit for small children. This size is the next step from a toddler bed. Twin mattresses are easy to transport and fit inside smaller rooms. You could even invest in bunk beds if you have at least two children. Bunk beds are a great way to accommodate more than one sleeper without taking up extra space.

Twin XL size mattresses are a better fit for single sleepers. The longer size makes it more comfortable for any height, one of the main reasons why twin XL beds are standard in college dorm rooms. Plus, if you have two twin XL mattresses, you can easily push them together to create a king size.

Queen size mattresses are most popular for couples and single adults. Queen beds cost less than a king or California king mattresses, but they still provide enough space to accommodate two people and fit inside small master bedrooms . Single adults will love the luxurious space from a queen-sized bed compared to a twin or full size mattress.

King mattresses, or eastern king beds, are the perfect size for couples. King beds provide lots of room so you and your sleep partner wont feel crowded. This size can also fit small children if they tend to sneak into your bed at night.


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