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Standard Bunk Bed Dimension? (Quick Answers)

Bunk beds are popular for their smart design and great space-saving technique. Anyone can easily accommodate guests or siblings without feeling uncomfortable with a bunk bed.

They are manufactured in variations with aesthetic features, typically many standard sizes and types, depending on the user’s desire, demand, and number. 

What are The Standard Bunk Bed Dimensions?

The size of the bunk beds varies depending on the user’s needs. Typically, the standard bunk is 165.1 cm in height, 99.6 cm in width, and 203.3 cm in length. But while deciding on a standard size, it’s wise to take into account the room’s size as well as the user’s age.

Depending on the category, bed bunks come in various dimensions and styles. In fact, it also depends on the size of the room and the age of the user. Here the standard bunk bed’s dimensions are briefly described:


There is no clear industry standard for heights, but they typically range from 127 cm to 165.1 cm, with the possibility of exceeding 196 cm. A twin bunk or standard bunk bed should be 65 inches (165.1 cm) in height.

The dimensions of a double bunk bed or a queen bunk bed are the same, with the only difference being the breadth.

The king bunk bed is typically 51.5 inches (130.81 cm) in length. When gauging the height of bunk beds, leave enough room between the selling to avoid knocks or head injuries.


The width varies depending on the style. Typically, the normal single-over-single or standard bunk bed is 39 or 40 inches wide, making it ideal for children. Full bunk beds for teenagers are 58 inches (147.32 cm) long.

The smaller bunks do not require much width, which is normally 28 inches. The problem is that the more personalized the bunk beds are, the less likely they are to fit a conventional mattress.


The standard length of bunk beds is 80 inches (203.2 cm), and the bunk size should be 5 inches longer than the standard mattress size of 75 inches.

The length of the double bunk beds is likewise the same. The king and queen bunk beds are 5 inches longer than conventional bunk beds.

Are bunk beds a standard size? 

Traditionally bunk beds are standard size. Any bunk bed with a height of 127 cm (50 inches) to 190.5 cm (75 inches) and a width of 99 cm (39 inches) or 101 cm (40 inches) and an average length of 203.2 cm (80 inches) fits into the standard size of bunk beds.

The conventional size is usually 80 inches long, 65 inches tall, and 39 inches wide. 

A single-over-single bunk bed that measures 99.06 cm (39 inches) in width by 203.2 cm (80 inches) in length is designed the same as any standard size. The twin and twin XL are also standard sizes, measuring 75 inches and 80 inches in height and 40 inches in width.

Some prefer to install triple, king, or loft bunk beds. These can also customize with standard sizes, keeping in mind the height and available space of the room. 

What are the standard bunk bed dimensions for different types?

Bunk beds come in various types, sizes and designs. So, the dimensions varies because the single and twin bunk beds, which are ideal for children and teenagers and tiny rooms won’t be suitable for the adults.

Adults will enjoy the triple, king, or queen sizes, which are available in heights ranging from 80 to 84 inches. For different types of bunk beds, the standard size are:

Single bunk bed:

It has a width of 99.06 cm (39 inches), a length of 203.2 cm (80 inches), and a height of 165.1 cm (65 inches) from the ground to the top bunk.

In order to fit the frame, the mattress must be 190.5 cm long. Keeping in mind that the top and bottom bunks must have a 76.2 to 83.82 cm clearance.

Twin bunk bed:

These are available in two conventional sizes, depending on height. The first is the twin bunk bed, which has a width of 96.52 cm (38 inches) and a height of 190.5 cm (75 inches).

The second is the twin XL bunk bed, which has a width of 96.52 cm (38 inches) and a height of 203.2 cm (80 inches).

Triple bunk bed:

They’re best for rooms with a ceiling height of 274.32 cm (9 feet).

There is no standard range; heights range from 195.58 cm (77 inches) to 198.12 cm (78 inches), with the highest being 208.28 cm (82 inches) to 233.68 cm (92 inches) and the widest being around 137 cm (54 inches).

Queen size bunk bed:

The standard height of the queen bunk bed is 203.02 cm (80 inches), the width is 152.4 cm (60 inches), and the length is 165.1 cm (65 inches), which is suitable for adult users.

King size bunk beds:

The king bunk beds are the same height as the queen bunk beds, measuring 203.02 cm (80 inches), with a width of 193.04 cm (76 inches) and a length of 130.81 cm.

Loft bunk beds:

The lower loft bunk beds have a standard height of 127 cm (50 inches) and the high loft bunk beds have a height of 190 cm (75 inches) with a width of 99.06 cm (39 inches). They have lots of space underneath and are space-saving bunk beds.

What are the standard bunk bed ladder dimensions? What are the standard bunk bed mattress dimensions

Depending on the width and the length of the bunk beds, bunk bed ladder dimensions differ. The height of the ladder is counted from the bottom of the top bed.

Typically the average bunk ladder height is considered 58 to 60 inches and the width is between 16 to 18 inches. However, the length and width can be decreased if the bed is for the kids or can be increased if the bed is for the adults.

Bunk beds can come in different sizes and according to the size the bunk mattress should fit snugly with the enclosure. For twin bunk beds, a 38 inches wide and 75 inches long mattress would be standard.

For twin XL, the width would be the same but the length would be 5 inches extra longer than the twin bed’s mattress. Queen bunk bed mattress standard size is 60 inches wide and 80 inches long where, the king size’s mattress is 70 inches wide and 80 inches long.

Factors that affect the standard dimension of the bunk beds:

When making a standard bunk bed, there are a lot of things to consider. The standard size is determined by the room’s size, space, height, and distance between the ceiling and the top bunk, all while taking into consideration the users’ desired bunk bed designs.

Other considerations include the user’s age and height when adjusting standard bunk beds of various types.

The bedroom size:

To avoid mobility concerns, it is necessary to measure the bedroom area before installing a standard bunk bed. Installing a triple bunk bed of standard size in an 8-foot room will put users at risk of head injury.

Instead, the room should be around 275cm in length, as these come in heights of 208.28cm (82 inches).

Height of users:

Keeping in mind the height of adult users, a standard bunk bed should be separated by 60.96 cm (24 inches) to 81.28 cm (32 inches) between the top and bottom bunks so that the users can move freely between them.

There is the same amount of space between the top bunk and the selling to minimize injury to them.

How to measure bunk bed dimensions? 

To measure bunk bed dimensions you will need a measuring tape. But you can use the mattress measurements to measure the bunk bed dimensions easily. Manually you can measure the dimensions as well:


The height of the bunk is measured based on the topmost component of the bunk. And, the topmost part of the bunk bed is normally the guard rail. To get the total height, measure the upper bunk and lower bunk distance.


To get the width of the bunk bed, measure the distance of the upper bunk panel and include the bunk rail width.

Or, you can simply take the width of the mattress and add 2 ½” to the width for each guard rail for the overall width. But it’ll not include in the width dimension.


Get the length by measuring the lower bunk or upper bank and include the length of the staircase. But the length of the guard rails will be subtracted to get the measure of length dimension.

Final Thoughts 

Standard bunk bed dimensions are normally considered 165.1 cm height, 99.6 cm width, and 203.3 cm length though it changes depending on the type and size. But to keep up with standard size, it’s also important to consider the room’s height, space, size of the mattress, and user’s age as well.