How To Crib Mattress Height | 8 Easy Step

Caring for your baby’s safety and comfort is super important. You’ll need to know how to change the height of their crib mattress. Babies grow fast, and their crib needs to change with them. This guide is here to make it all simple for you. 

We’ll explain when to raise or lower the mattress to keep your baby safe and comfortable. When your baby is still small, the bed should be up high. But you’ll need to lower it as they get bigger and move around more. 

We’ll discuss when to do this and how to do it safely. Consider switching to a toddler bed when your baby gets taller. We can help you with that, too. Whether you’re a new parent or need a warning, this guide will tell you everything you need to know about changing the crib mattress height. Your baby must be happy, comfortable, and, most of all, safe.

In this article, we will explore the importance of crib mattress height. Discuss the standard measurement for crib mattresses. We cover both adjustable and non-adjustable cribs. We will also provide step-by-step instructions for adjusting the size

When Should I Change the Mattress Height?

Changing the mattress height in your baby’s crib ensures they’re safe and comfortable. Here’s a list of when to make those important changes

When Should I Change the Mattress Height

1. Highest Setting 

When your baby is brand new, it’s safest to have the crib mattress at the highest setting, which is up high. It helps you reach them quickly and stops them from trying to climb out. It’s for babies under five months old.

2. Middle Settings 

Once your baby gets a bit older, usually around 6 to 8 months, it’s time to lower the mattress to the middle setting. It keeps them safe as they start to sit up and pull themselves up. It makes it easy for you to talk to them as well.

3. Lowest Setting

Set the mattress to its lowest level around 8 months and up, or when your baby shows they want to climb out. It stops them from getting hurt if they fall out. The exact time can change, so pay attention to what your baby does.

4. Transitioning to a Toddler Bed

When your baby is about 35 inches tall and tries to climb out, it’s time to think about a toddler bed. It gives them more freedom and keeps them safe while they sleep. It’s an exciting step as they grow up.

When your baby is about 35 inches tall and tries to climb out, it’s time to think about a toddler bed. It gives them more freedom and keeps them safe while they sleep. It’s an exciting step as they grow up.

How to Adjust Crib Mattress Height (Step by Step)

As your baby grows and changes, you need to change the height of the crib mattress for safety and comfort. You can keep your child safe and meet their changing needs by lowering or raising the mattress. Here, we’ll explain How to Adjust Crib Mattress Height.

How to Adjust Crib Mattress Height

Step 1. Remove any bedding or toys

Safety always comes first when adjusting the crib mattress height. Remove bedding, pillows, stuffed animals, or toys from the crib. It keeps the work area clean and reduces the chance of an accident during the change.

Step 2. Check the Current Height

Before making any changes, check the crib’s current mattress height setting. You need to understand your current position, which will help you decide whether to raise or lower it.

Step 3. Using a screwdriver

Using a screwdriver for Crib Mattress

Use Screws or bolts to hold the mattress support in place. Get a tool that works with the screws in your crib. It’s a good idea to consult your crib’s manual for specific instructions. You ensure you know what kind of screwdriver you’ll need.

Step 4. Use a power drill (optional)

Use a power drill for  Crib Mattress

A screwdriver that you turn by hand works well. You can speed up the process using a power drill with the correct adapter. It can save you time and work, but be careful not to overtighten screws when you use it.

Step 5. Move slowly and carefully

Now that you have your tools ready, proceed with the change. You must move slowly and carefully using a hand screwdriver or a power drill.

Step 6. Release the Mattress Support

Locate the crib’s mattress support system. Most cribs have a simple mechanism for releasing the support system. It may involve loosening screws or bolts on the crib’s sides. Read the guidebook for your crib to find out how to remove the mattress support.

Step 7. Adjust the setting

Once the mattress support is removed, lower or raise the mattress to the height you want; follow the guidelines in your crib’s manual for safe adjustment. Ensure that it is firmly in place and that there are no loose or weak parts.

Step 8. Check for Safety

After adjusting the crib mattress height:

  1. Perform a safety check.
  2. Shake the crib to ensure it’s stable and that the mattress is securely in place.
  3. Ensure no protruding screws or sharp edges could pose a risk to your child.


Adjusting the height of your crib mattress is an important. It ensure your baby’s safety and comfort. By following the manufacturer’s instructions, regularly checking the height of the mattress. And keeping in mind other safety considerations. You can ensure that your baby is sleeping safely and comfortably in their crib.

By following these guidelines, parents can easily adjust the crib mattress height. And be confident that their baby is safe and comfortable. Remember to regularly check the height as your baby grows. And to follow the manufacturer’s instructions for adjusting the crib. Keep in mind the safety concerns. And tips provided in the article to ensure the best possible sleeping environment.

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