Bunk beds are a great way to save space in small bedrooms where every inch of floor space is valuable. Since there are a few different bunk bed sizes to choose from, this guide explores the different dimensions to help you select the right one for your needs.

Twin/Single Bunk Beds

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Most single or twin bunk beds measure 75" long by 38" wide and utilize regular twin-size mattresses. These bunk beds are a great space-saving option if you are trying to fit two twin beds in one small room, using vertical space to make the most of limited square footage. This is ideal for families with multiple kids or those who regularly have friends stay the night.

Twin-over-twin bunk beds typically have the same dimensions as standard twin bunk beds. The only difference is that twin-over-twin bunks can often be taken apart and separated into two standalone twin beds for individual use.

Some twin bunk beds feature slide-out trundles to add more sleeping space. Twin bunk beds even come in triple configurations to stack three beds vertically.

Tip!

Place painter's tape on the floor to mark out the bunk bed dimensions. This will help you understand how much space the bed will take up and where it will fit the best.

Full/Double Bunk Beds

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Full bunk beds typically measure 75" long by 53" wide, offering more space than a twin. They utilize full mattresses and are often favored by older children and young adults. Additionally, they can be a great choice for guest rooms where multiple people regularly stay over.

As with twin-over-twin bunk beds, full-over-fulls usually have the same dimensions as standard full bunks, but they can often be split into two separate full beds. This is fantastic if sleeping arrangements change and you need two full-size beds.

Twin-Over-Full Bunk Beds

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Twin-over-full bunk beds offer the best of both worlds. The top twin bed measures the standard 75" x 38", while the lower full bed measures 75" x 53". The footprint will equal the dimensions of the bottom full bed since this is what will be on the floor. You will need one twin and one full mattress for this bunk bed.
This bed combination can be a great choice for big families or siblings with a larger age gap since it allows for use of both the twin and double mattress at the same time. Twin-over-full bunk beds that can come apart are ideal for when children get their own rooms or you need to furnish a guest room.

Many twin-over-full bunk beds are designed with the beds placed parallel (like traditional bunk beds), while others are configured in an L-shape with the top bed facing one way and the bottom bed perpendicular. This L-shaped arrangement is great for corners and making the most of compact bedrooms. Make sure to take careful measurements of your space to ensure that an L-shaped bunk bed is the best option.

Tip!

If you are considering purchasing bunk beds and want a little more info, read Types of Bunk Beds.

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