Mattress Size Chart & Bed Dimension Guide

Research what size mattress might work best for you and your bedroom space.

Type	Size	Suitable for
Crib	28″x52″	Babies & Toddlers
Twin	38″x74″	Children who are coming out or a crib or toddler bed. This option is great for kids or adults who are working with limited space. *This is the standard size fro loft or bunk beds.
Twin XL	38″x80″	This size is great for kids or adults who are tall. This size is also typical for dorm room bunk beds. *Also common is using two twin XL’s to create a split king, most commonly uses for split king adjustable bases.
Full or Double	54″x75″	This size is very common for older kids seeking more space or shorter adults with limited space.
Full XL	54″x80″	This option is typical for adults who are limited in space but still want the same length as a queen mattress.
Queen	60″x80″	Queen size is one of the most commonly purchases for adults and couples that do not require a lot of sleeping space or have a smaller bedroom.
King	76″x80″	This is the most common size for couples who want to maximize their sleeping space. This option is great for couples who have the space or have children and pets who like to snuggle with mom and dad.
Cal-King	72″x84″	This is a very common size in California. This option is best for couples who prefer the extra sleeping space and for taller individuals. Sometimes a narrow and long room will accomodate this size better than a regular king.
Wyoming King	84″x84″	This size is not common in stores or online but some brands will accomodate.
Alaskan King	108″x108″	This size….sounds amazing right!? Alaskan kings are also not common and would most likly incur a hefty upcharge to have made.

Crib

This size is made specifically for cribs. Many cribs adjust into toddler beds as the child gets older as well. This size mattress is typically 28″x52″. Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

Twin

This size mattress is 38″x75″.

The Twin Size Mattress is the quintessential mattress for kids that outgrew their crib or toddler bed.

This is also the most common size for as bunk beds & day beds. This size is also ideal for shorter stature adults who have limited space.

*Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

Twin XL (Xtra Long)

This size mattress is 38″x 80″.

The Twin XL Size Mattress is the best mattress for kids that outgrew their crib or toddler bed who are tall and have limited room space. Also a great choice for adults who have limited space and require more length than a regular twin for leg room.

This is also the most common size for dorm room bunk beds and lofts.

*Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

Full/Double

This size mattress is 54″x 75″.

The Full size is commonly knows as a double or “standard” size. This is a great size for kids seeking a larger mattress.

Also a great choice for adults who have limited space but want more width than a twin provides.

Although two people can sleep on a full, it is not ideal. If you have a partner, child or pet that sleeps with you, if you can fit a queen, we would suggest upgrading.

*Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

Full/Double XL

This size mattress is 54″x 80″.

The Full XL size is suited for singles who want more space and may not have the space for a queen. You will get the same length as a queen for added leg room.

Also a great choice for adults who have limited space but want more width than a twin but the length of a queen.

Although two people can sleep on a full, it is not ideal. If you have a partner, child or pet that sleeps with you, if you can fit a queen, we would suggest upgrading.

*Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

Queen

This size mattress is 60″x 80″.

Perhaps the most commonly sold mattress in the world, the queen size is ideal for couples or singles with kids/pets who sleep with you.

If you are considering anything larger than a Queen you will want to make sure to measure your living space first.

The next thing to consider is if you sleep set has to go up or down a staircase. Many old homes in a city have smaller stairwells. If your home fits in this category, have no fear, you can order a split boxspring/foundation. The mattress is not an issue since they will bend if needed in most cases.

*Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

King/Eastern King

This size mattress is 76″x 80″.

King size mattresses are preferred by most couples. You will just want to make sure your room can accommodate this size before purchasing. A regular king is the most commonly bought king size because the length is sufficient for most adults and most couples want the extra width vs length.

King boxsprings/foundations are split, so most stairwells will not be an issue.

*Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

Cal-King

This size mattress is 72″x 84″.

Cal-King size mattresses are preferred by couples or couples or coupes who have a tall sleeper. You will just want to make sure your room can accommodate this size before purchasing. With less width and more length this size is ideal for tall people or people who have a narrow but long room.

King boxsprings/foundations are split, so most stairwells will not be an issue.

*Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

Wyoming King

This size mattress is 84″x 84″.

Wyoming size mattresses are ideal for people seeking a lot of space. These mattresses are not commonly made from most manufacturers. Some factories will custom make this size for you but there will most likely be an upcharge. Finding sheets and bedding sets to fit could be a challenge as well.

*Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

Alaskan King

This size mattress is 108″x 108″.

Alaskan size mattresses are ideal for the whole family. These mattresses are not commonly made from most manufacturers. Some factories will custom make this size for you but there will most likely be an upcharge. Finding sheets and bedding sets to fit could be a challenge as well.

*Bear in mind if you measure most mattresses they can appear off by about an inch or so in one direction or the other.

Conclusion

When trying to find the right mattress size to fit the needs of you or your family, these are a few things to have in mind.

If upgrading for adults to a larger size be sure to measure your room to make sure you can accommodate the size you want.
If you are upgrading your child’s mattress be mindful of how tall they may get and if you want to bypass a twin size for a full or queen if height is prominent in your family.
Third, who will be sleeping in it? If it’s just you and you are not tall, you may be good with a twin xl r full/double size. But, if you are a couple, single with a child or pet you may want to strongly consider a queen or king.
Keep in mind if you are looking to buy a new bedroom set or upgrade in mattress size, the larger you go typically the bed frame, beds, platforms, etc will also become more expensive to buy. Spending more now to get the comfort and space you want is generally not a bad investment. Unless it doesn’t fit in your space, you will never say “I wish I had a smaller mattress”.

Now that you have an idea of what size mattress could work great for you take some time to see our other guides and which mattress might work best for you.