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Bunk Bed Dimensions (Standard & Different Sizes)

Here’s our guide to bunk bed dimensions for different mattress sizes including standard, twin, full, double, triple, built-in, futons, and ladder sizes for bunk beds.
Wooden twin bunk bed hard wood floor bedroom benchBunk beds are two or more beds stacked on top of one another. It utilizes a single vertical space but will be safely constructed to let two to three people sleep simultaneously. This is an excellent option for a bed if homeowners have multiple children, bunk beds for college dormitories, or even hostels and summer camps. 

Most types of bunk beds will come with two mattresses of equal sizes, but some variations will make the lower bunk more oversized than the upper bunk bed. Many of these bunk beds will come with ladders for easy access to the upper bunk, safety railings, or even curtains for added safety and privacy.

Standard Bunk Bed Dimensions

Standard bunk bed dimensionsThere are so many configurations when it comes to bunk beds, but there are also basic or standard bunk beds. Bunk beds with a single-sized mattress will be 75 inches or 191 centimeters in length; they will have a mattress depth of 39 inches or 99 centimeters, with a height of 65 inches or 165 centimeters. 

These size bunk beds can have storage units on the bottom of the bunk and can also be configured with other features like stairs on the sides for even safer access to the upper bunk bed. They can be made of metal or strong wood that will withstand a person’s weight or two people in the upper bunk. 

Twin Bunk Bed Dimensions

Twin bunk bed dimensionsMany bunk beds in stores will hold twin mattresses on one or two of the bunk. A twin bunk bed will measure 70 inches or 178 centimeters long with a depth of 39 inches or 99 centimeters. These bunk beds’ heights can range from 63 to 65 inches or 160 to 165 centimeters. 

Other than the standard twin, there are also twin XL bunk beds to hold slightly longer mattresses. It will have a length of 72 inches or 183 centimeters and a depth of 40 inches or 102 centimeters. The same as a standard twin, twin XL bunk beds, will range in height from 63 to 65 inches or 160 to 165 centimeters. 

Full Size Bunk Bed Dimensions 

Full bunk beds are designed for mattresses that measure to be 75 by 54 inches or 191 by 137 centimeters. Full bunks will be perfect for teenage rooms or even dormitories for college students.

More often than not, these bunk beds will be constructed to hold a full mattress on the bottom with a top bunk of twin or twin XL size. 

This bunk bed can fit up to four-person, with two people each. If a teenager is taller than average, choosing a full bunk bed will offer more space than the twin XL bunk beds. 

Double Bunk Bed Dimensions 

Double bunk bed dimensionsAnother bigger bunk bed than the average is the double over double bunk bed or the double XL over double XL bunk bed. The first one will have two double mattresses on top of each other that will have a length of 74 inches or 180 centimeters and a width of 54 inches or 137 centimeters. This size will offer more length than the full or a twin XL perfect for taller persons. 

The double XL over double XL bunk beds will run the length of 80 inches or 230 centimeters with a width of 54 inches or 137 centimeters. This is an excellent alternative for a queen bunk bed if the floor space in the room is limited. 

Triple Bunk Bed Dimensions

Triple bunk bed dimensions

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For homes with three kids or even families with triplets, owning a triple-decker bunk bed might remedy the problem of limited floor space. These sturdy bunk beds will be safe for anyone; just take note of the weight requirement.

At the same time, it will also offer safety features like safety railings and a metal connection on each bunk to ensure durability. 

The average triple bunk bed will have a length of 79 inches or 201 centimeters, a width of 59 inches or 150 centimeters, and a bunk bed height of 81 inches or about 206 centimeters. 

Built In Bunk Bed Dimensions 

Big kids bedroom with built in bunk beds beige paint wall lamps floor carpetBuilt-in bunk beds will house all the other bunk bed options that any homeowner can choose from other than the standard one-up and one-down bunk beds. Depending on their preference, it can be L-shaped bunk beds or even T-shaped bunk beds. 

A built-in bunk bed designed in an L-shaped can have options to include a study desk or even a wardrobe built-in on the space under the top bunk itself.

The bed sizes can be any types of mattresses that children would want. Still, most often than not, it will be available to house a bed at 75 inches or about 191 centimeters long with a width from side to side of 39 inches or approximately 99 centimeters. 

Futon Bunk Bed Dimensions 

Futon bunk bed dimensions]Another great option for guest rooms or even resorts or hostels is opting to use a futon bunk bed in their spaces.

A futon bed is a versatile furniture piece that doubles as a bed plus a seating option. When two guests are expected to use the room, the futon can easily be converted into a sleeper by adding the right mattress size. 

Usually, they will have a length of 78 inches or 198 centimeters, a width of 41.5 inches or 105 centimeters, and a height of 72 inches or 183 centimeters. 

Bunk Bed Ladder Dimensions

Bunk bed ladder sizes will differ with the height of a specific bunk bed, with the taller ones having longer ladders to get into the top bunk. For a standard 75 inches or 191-centimeter-long bunk bed, the ladder will usually be about 65 inches or 165 centimeters. 

What Size is a Bunk Bed Mattress? 

A bunk bed mattress size will depend on the bunk bed size itself. A homeowner might have two twin bunk beds that need a mattress about 75 inches or 191 centimeters long with a width of 38 inches or 97 centimeters. 

Or it can have two full bunk beds, which will need a mattress at 75 inches or 191 centimeters in length with a width of 53 inches or 135 centimeters. 

See more related content in our article about bedroom layout ideas here.

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