What Size Mattress Fits A Bunk Bed? Discover These 3 Easy Steps!

You may be wondering what size mattress fits a bunk bed. Well, it depends, but one that is six to seven inches thick is the best.

In homes with school-aged children, bunk beds are common.

what size mattress fits a bunk bed

In the military, ships, and boarding houses, it’s also frequent.

This bed is well-known as one with a bed frame placed on top of another bed as a base.

Most of the time, there’s a ladder built between these two sides

Why is it so important to choose a mattress for this type of bed?

If you want to find out the solutions, read further!


What To Look For In A Bunk Bed Mattress

For your bunk beds, what do you think is the kind of mattress you should get?

Here’s the thing:

You should purchase an appropriate mattress for your bunk bed, particularly for the upper portion, to avoid unpleasant scenarios.

Remember that accidents are unavoidable.

But if you pay attention to the details, you can lessen the chances of being engaged in one.

So, what size mattress fits a bunk bed?

Here are the steps to choose the right size for your bed:


Step #1. Measure the bed frame

The first step is to figure out how big the bed frames are.

Do you want a mattress that falls off your bed or isn’t securely fastened to your bed frame?

There are many various types of bunk beds.

That’s why you must consider the dimensions of your bunk bed frame while selecting a mattress.

If you bought your bunk bed from a store, deciding on the mattress size would be considerably easier.

If you choose to design it yourself, make sure the bed frames fit standard mattress sizes.

Isn’t it a lot easier to change the size of your frame than it is to change the size of your mattress?

The following are some prominent bunk bed classifications based on mattress sizes:

  • Triple bunk beds
  • Full or twin-sized loft bed
  • Twin sized under twin-sized bunk beds
  • Futon under twin-sized bunk beds
  • Twin XL sized under twin XL sized bunk beds
  • Full-sized under twin-sized bunk beds

As you can see, the lower and upper frames may have different sizes.

You can choose whatever size you like, but if you want a comfy mattress, stick to these standard sizes.


Step #2. Determine the suitable mattress height for you

When choosing a mattress for your bunk bed, keep the thickness of the mattress in mind.

To remind you, the damage it will cause by falling out of a bunk bed is more than the damage it will cause by falling out of a regular bed.

On the upper frame, this is very crucial.

To ensure your safety, the bunk bed rails should be at least 5 inches higher than the mattress’s surface.

As a result, the greater the number, the better.

It is advisable to use a mattress that is not extremely thick for the lowest portion, as this will restrict your headspace.

Make sure the lower and upper frames are separated by a bigger distance if you want a thick mattress for the lower portion.

For sure, you will be more comfortable; there will be enough room for you to sit up straight or enjoy other positions besides lying.


Step #3. Think about the type of mattress you desire

Don’t we all enjoy sleeping on a comfortable bed?

When it comes to selecting a mattress for your bunk bed, you don’t have to forego the level of comfort you desire every time you lie down.

There are many different sorts of mattresses based on the materials they are made of.

But we will just look at the ones that are suitable for bunk beds.


  • Memory foam

This is the most common mattress seen in most homes.

Memory foam lasts longer since it is less prone to drooping.

It comes in a variety of thicknesses ranging from four to 16 inches, making it appropriate for both upper and lower frames.

Again, avoid choosing one that is excessively thick.

Choose one that is of a reasonable thickness.

If you insist on a thicker mattress, be certain your bed rails are strong enough to keep you safe.

The contouring ability of a memory foam mattress is especially beneficial for side sleepers.


  • Low-profile mattress

A low-profile mattress isn’t a bad option because bunk beds are built to accept thinner mattresses.

This mattress has a thickness of not more than six inches.

It is also an excellent choice for those looking to save money.

It’s light, so it’ll fit into bunk beds without causing too much difficulty for whoever is in charge of the bedroom chores.

Of course, the mattress case must be changed on a regular basis.


  • Spring-loaded mattress

You must be cautious in case you opt for this type of mattress, especially if your bunk beds are occupied by children.

They’ll be more enthusiastic about jumping onto spring mattresses.

It will be perilous to choose one for the top half of the body, but it will be safer for the bottom half.

Because the coils, unlike foams, are positioned with spaces, using a spring mattress allows for proper ventilation.


Last Thoughts

By the end of this article, I expect you’ve learned what size mattress fits a bunk bed.

May the information offered in this article help you make an excellent decision.

Thank you for making it this far through the article.

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