There are 10 standard bed sizes in the US. The standard bed sizes in order are Crib, Small Single, Twin, Twin XL, Full, Full XL, Queen, Olympic Queen, King, and California King. Check out the bed sizes comparison chart below for an overview of their dimensions. And, see beneath for a description of each bed.
BED & MATTRESS SIZES
Here’s a simple visual reference for all bed sizes – so you can easily find and compare different standard bed and mattress sizes.
A Crib bed measures just 28” x 52” inches. It is the smallest bed on the bed sizes comparison chart. Also known as a Cot, the Crib size is widely regarded as the standard to fit any crib.
There are many styles of crib on the market but the mattress size should remain the same. This bed is used for babies and will continue to provide plenty of space until they grow to become toddlers.
SMALL SINGLE SIZE
A Small Single bed measures just 30” x 75” inches. They are ideal for toddlers and children that have outgrown their crib.
The minimum recommended room size for a Small Single is 7 feet by 10 feet. If you need a bed that is just a little bit wider you should go for a regular single. Nowadays, a ‘Single’ is often referred to as a ‘Twin’.
A Twin bed measures 38” x 75” inches. This bed is also known as a ‘Single’. The use of the two different terms can be confusing but they refer to the same bed size.
Twin beds get their name because they are slim in size and easy to fit side by side in a kid’s bedroom. They are also used in bunk beds.
This is the most popular choice of bed size for kids across the US. Twin beds are very adaptable, lightweight, and easy to move around.
TWIN XL SIZE
A Twin XL bed measures 38” x 80” inches. It is an upgrade to the standard Twin size. This bed size allows an extra 5” inches to stretch out. A little extra length for added comfort.
The Twin XL is popular for taller children, young adults, and people that just don’t have the space to fit a larger bed.
It’s a halfway house between the small mattress sizes and the larger models further down this list. The Twin XL size is the bed size of choice for college dorms.
A Full bed measures 54″ X 75″ inches. It’s a great mattress size for a spare room. It offers plenty of room for a single sleeper and can easily be used by a couple as an occasional double.
The Full mattress sits at the halfway point on the bed sizes comparison chart. They offer a compromise between the twin and queen bed sizes.
A Full bed size is a good choice for young children who are sharing a bed, teenagers who have outgrown their twin, and people living in small apartments that don’t want to go as large as a queen.
FULL XL SIZE
The Full XL bed measures 54″ X 80″ inches. It adds 5” inches in length compared to the standard full bed size. The Full XL adds a little comfort for people that need a little extra stretch room.
The Full XL is a good choice of bed size for taller individuals, young adults, and couples that need some extra legroom.
A Queen bed size measures 60″ X 80” inches. It is the standard and most popular double bed size. It’s a highly versatile bed size.
The Queen bed gives plenty of space for two people to sleep comfortably and it is compact enough to easily fit into most bedrooms. It’s a great choice for couples of all sizes and for single adults that want a large bed with plenty of space.
The adaptability of a Queen bed makes it a good choice for the master bedroom or a guest room. It is the most popular regular mattress size in the US.
OLYMPIC QUEEN SIZE
An Olympic Queen bed measures 66″ X 80” inches. It provides an extra 6” inches of width compared to the standard queen. Olympic queen is a not very popular size. However, it’s a great choice for couples that find the regular queen a little too small.
It’s a great choice for people that want a larger mattress surface area than a queen but don’t want to go all the way up to king size. The Olympic Queen size is a halfway house between a queen and a king.
A King bed measures 76″ X 80” inches. It is a large double bed and provides ample spacious comfort.
The King size provides space and luxury. It’s a great choice for couples that want lots of room. There is plenty of space for a couple to sprawl and stretch in their own space. It’s also great for couples that share a bed with their kids or pets.
Due to its large dimensions, a King needs to be placed in a room that measures at least 12′ x 12′ feet. It can swallow up small rooms, so this bed size is only suitable for bedrooms with lots of space.
CALIFORNIA KING SIZE
A California King bed measures 72″ X 84” inches. It is 4” inches narrower than a regular king and 4” inches longer. It is the longest bed on our bed sizes comparison chart.
This bed size has been developed specifically for tall individuals. It provides an additional 4 inches in length to allow tall sleepers to stretch and feel comfortable.
Like the regular King size, it is a very large mattress and provides ample room for a couple. They are also used by couples who like to share their mattress with their children or pets.
California King beds work best for people who are over six feet tall. And, also work well in narrower bedrooms where a regular King is too wide.
BED SIZE AND MATTRESS COMFORT
Choosing the best size bed for your home is a great start. But it’s vital you also choose the most comfortable mattress type for your needs.
For a good sleep make sure you choose the best mattress for you. There is a wide range of models and types to choose from, so check out our guide to the top 10 most comfortable mattress for some tips.
WHAT ARE THE MATTRESS SIZES IN ORDER?
The mattress sizes in the order of smallest to largest are Crib, Small Single, Twin, Twin XL, Full, Full XL, Queen, Olympic Queen, King, and California King.
WHAT IS BIGGER FAMILY SIZE OR QUEEN SIZE BED?
A family size bed is a non-standard super-sized bed. They measure up to 144” inches wide and 84” inches long. This makes them much bigger than a Queen size bed. A Queen bed measures 60″ X 80” inches. Family beds are designed to have enough room for the whole family.
ARE TWO SINGLE BEDS THE SAME SIZE AS A QUEEN?
No, two Single beds are not the same size as a Queen. A Single bed is 38” inches wide. Therefore two singles would measure 76” inches wide. A Queen bed is 60” inches wide. Also, a Single bed is 75” inches long. A Queen bed measures 80” inches long.
IS THERE A BED SIZE BETWEEN FULL AND QUEEN?
Yes, there is a size between Full and Queen – it’s called Full XL. A Full XL bed measures 54″ X 80″ inches. It is a halfway house between a standard Full and a Queen. A Full XL is the same length as a Queen but 6” inches narrower.
WHAT ARE THE STANDARD MEASUREMENTS FOR A FULL SIZE MATTRESS?
The standard measurements for a Full size mattress are 54″ X 75″ inches or 137cm x 191cm.
IS A FULL BED THE SAME AS TWO TWINS?
No, a Full bed is not the same as two Twins. Two Twin beds measure 76” inches wide by 75” inches long. A Full bed measures 54” inches wide by 75” inches wide. Two Twins are much wider.
WHY IS A SINGLE BED CALLED A TWIN?
The term originated in the hotel industry. In a hotel, a twin room contains two single beds. In time these beds became referred to as twin beds. And a single bed then became known as a single twin.
HOW MANY MATTRESS SIZES ARE THERE?
There are 10 different mattress sizes – Crib, Small Single, Twin, Twin XL, Full, Full XL, Queen, Olympic Queen, King, and California King.
WHAT ARE THE DIFFERENT TYPES OF MATTRESSES?
ARE BED SIZES DIFFERENT IN THE UK?
Yes, bed sizes are different in the UK. In the UK, the most popular bed sizes are small single, single, small double, double, king, and super king size.
WHAT ARE UK BED SIZES?
The most common bed sizes in the UK are small single, single, small double, double, king, and super king size.
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Josh is senior editor at Mattress Comfort Guide. He is an industry expert with over 30 years of experience in the bed and mattress industry. Josh is a native of Albuquerque and is a graduate of the University of New Mexico. He holds an M.S. in Project Management and a B.S. in Earth & Planetary Sciences.
He has worked in both the retail and manufacturing industries where he has held consultancy roles on mattress design and technologies. Josh has a particular interest in how different mattress types complement body size and sleeping position, and deliver optimal lumbar support. Josh is a keen sports fan and when he’s away from the office he likes to play basketball and catch the New Mexico Lobos games with his two sons at the Pit.