Height Of Crib

Your kid is growing, but you’re not sure if it’s time to lower the crib rails quite yet. It’s possible your kid has reflux, and you’re considering tilting their mattress to help, but you want to be sure it’s safe to do so.

Your baby’s sleeping position and the height at which you set their mattress is just one example of the many options and concerns you’ll face as a new parent. Is it possible to raise your baby’s crib height? Is it okay to raise a crib mattress’s incline?

Height Of Crib

Age and Height Recommendations for Lowering a Crib Mattress

Despite the fact that the crib has been put together and your baby is resting soundly in it, the task is far from over side rail. You will need to monitor your baby’s growth and change the mattress’s height at important points in order to ensure his safety and your own comfort.

Toddler bed

Make sure that you know when to raise or lower the crib mattress height for your infant. Continue reading to learn about important developmental milestones, an approximate age range for when it’s time to raise your child’s mattress on standing position and a step-by-step guide on how to accomplish it.

What’s the significance of a baby’s crib mattress height?

As you shop for your baby’s nursery, the crib is one of the most significant purchases you will make. There are several considerations that go into choosing a crib, including what color and design would go best in your nursery, how safe it is, and how much room you have in your nursery for a crib.

Buying a crib mattress necessitates additional investigation. Then it’s time to put it all together! Finally, you’re ready to lay your baby down in the crib, safe in the knowledge that you’ve done everything you can to ensure that the crib is both safe and comfortable for him or her.

To put your baby in someone special’s old cot may be a wonderful idea, but you should probably simply say thanks but no thanks. Those good gestures could be a safety concern in disguise because of today’s tougher crib safety requirements.

Playpens, bassinets, and cribs can cause serious harm to children, according to a study published in the journal of the American Academy of Pediatrics in 2011. More than 83 percent of the reported injuries included cribs, and 66 percent of the total injuries were the result of falls, according to the CDC.

Despite the fact that most of the reported injuries were minor, 150-200 children under the age of two perished each year as a result.

For this study, researchers provided an official proposal for improvements in product safety, as well as better use and understanding of their possible risks.

Requirements for crib standards

To ensure that the mattress fits snugly, the new requirements for crib standards and heights included:

  • standardized crib and mattress sizes;
  • a maximum 238″ gap between slats;
  • updated quality standards, such as no sharp edges, or potentially dangerous hardware;
  • clear and detailed assembly instructions

Even if you’ve recently purchased a new crib, you still need to be informed of any recalls, best practices, and when to lower the mattress of your child’s crib in order to prevent falls.

To make it easier and safer for parents who are trying to lower a sleeping baby, cribs are typically installed with the mattress at the highest setting.

There will come a time when your kids is ready to stand on his own, and you will need to lower the mattress so that it is at its lowest possible position middle height

The Most Common Heights for Crib Mattresses

Most cribs feature between two and four different height options. Law requires that the crib’s lowest setting be 26″ from the railing, and the crib’s highest setting can’t be less than 9“.

Aside from that, the manufacturer is in charge of determining the mattress’s height.

It is usual for each level to be 3-5 inches higher than the one before it, with the lowest level being 26″ below the railing’s highest point.

Heights for Crib  Mattresses

When is the crib mattress to be lowered?

Prior to lowering your baby’s crib mattress to bring attention to it, it is critical to be aware of the best time to do so. There is no need to wait till he is crawling over the crib’s edge to realize that he is big enough to do so.

The most important thing to remember is that you should never allow more than a quarter of your child’s body to be above the top of the railing at any given time.

To put it another way: You’ll most likely decrease your infant to one of the three lowest levels around five months and then back up to the highest setting by the time they’re seven months old.

There are many dangers associated with leaning over a railing that’s too short for a baby, such as the risk of a dangerous fall if a baby’s head is too big for their body.

Depending on the crib, the number of height levels, and your child’s developing pace, the correct time to alter the mattress’s height will vary. You should lower your baby’s mattress if you’re unsure if it’s time (better safe than sorry).

Highest crib setting

The first time your baby goes to sleep in his crib, he may not be able to sit up or roll over on his own. Your convenience in putting him to sleep without awakening him and the comfort of not getting a stomach full of the railing when you try to reach for him are more important than his safety at this moment.

Designed for infants, this level is the most advanced. It is recommended that you adjust the mattress setting to the middle level once your baby can sit up on his own lowered mattress. Typically, this occurs between the ages of five and six months that is older babies.

As early as two months, or as soon as your baby begins to lift himself or show symptoms of rolling, you should lower your baby’s crib’s highest setting, which is 9″ from the top of the rail (the maximum height permitted by law) and is baby safe.

Middle crib mattress setting (for infants)

Most cribs come with three positions, however others only have two.

This gives parents and babies more options. In order to prevent crawling babies from falling over the railing and becoming unsteady, the medium setting is recommended for children who are able to sit up on their own (around five months).

Lower the mattress in your child’s crib to the middle setting once he or she can pull himself up with his or her hands on the crib bars.

If your child is exceptionally tall, you may need to reduce it sooner than six months. Baby crib safety rules recommend that no more than 25 percent of your child’s body weight should be above the rail at any given time middle setting.

The lowest crib setting (for toddlers)

It’s possible that your baby will spend the majority of her time in a crib with the temperature set to the lowest setting, depending on how quickly she grows . When your kid is nine months old and able to pull himself up, it’s time to lower the crib mattress.

If you have a cot that has a mattress position that is similar to that of a toddler bed, you can use this until he is old enough to transition to a full-size bed (around two years).

Most babies are unique and some need more time in a crib while others need to be moved to one sooner in their development.

How do You Lower the Mattress in a Crib?

In 2011, a new legislation mandated that all cribs sold in the United States must include step-by-by-step instructions for putting them together correctly.

If you’ve lost your crib’s assembly instructions, try looking for ” crib bumpers] assembly manual” on the manufacturer’s website or on your favorite search engine.

The first step in lowering your crib mattress is to remove the mattress and lay it safely to one side, showing the support frame baby’s age.

A typical mattress support consists of a rectangular wire frame with a metal bar bolted to each of the four corners. These metal bars were bolted into the crib’s frame when it was completed, creating a sturdy platform for the crib mattress height.

For most cribs, following these instructions will allow you to lower the mattress safely:

  • To get to the mattress structure, you may have to remove a side of the crib.
  • Unscrew the metal bars from the crib (do not remove the bolts affixing the bars) two at a time, taking note of which level the crib frame is currently at.
  • Make careful to lower the crib’s two corner bars to the lowest level before reattaching them to the mattress height.
  • It’s now time to repeat steps 2 and 3 to lower the crib’s other two bars.
  • This is the moment to reinstall the side that was removed.
  • Push the mattress back into the mini crib, making sure that everything is in place.
  • To ensure that the crib is at the correct height for your baby’s size and developmental stage, place your infant in the crib.

In order to lift a crib mattress, here are the steps:

This can be done for a variety of reasons, including if it was put together incorrectly or if it is time to hand the crib along for baby’s life.

If that’s the case, the first thing you should do is search for “[crib name] assembly manual” on the Internet sudden infant death syndrome

Because most cribs are built in a similar manner, the steps outlined above for lowering the crib side rails should work for you.

Move the corner bars to the correct height and screw them firmly back into the crib frame, then proceed as necessary with the rest of the steps.

Top of the crib

It is possible to oversleep on a baby’s crib mattress as baby grows. A crib mattress may feel excessively low if you are having difficulty putting your baby to sleep or reaching him while he is asleep, but this is not a safety issue .

As long as it is safe to do so, you can raise the mattress for your and your baby’s comfort or convenience, but safety should never be sacrificed for the sake of convenience baby grows.

If you have a problem reaching your crib because you are short, don’t be scared to use a stool or anything similar.

How Old Is a Baby When He or She Outgrows a Crib?

The time has come for your baby to leave his crib and transition into a toddler bed.

However, this is a very large range, and it is influenced by a wide range of factors:

  • When it comes to children climbing, you may want to remove the crib bars sooner rather than later if your child is a prodigy.
  • Situations involving other children in the room may necessitate keeping your child in bed for an extra few minutes if he is prone to misbehaving and getting into mischief if he can get out on his own mattress support.
  • The weight limit will be included in the crib’s installation instructions as well. This can range from 30 to 50 pounds, depending on the crib mattress.
  • Big kid beds should be purchased for children who are at least three feet tall regardless of where they fall in the other categories.

Babies under 35″ are safe in cribs, but children beyond that height are more likely to fall (or climb) over the rails and get hurt.

Babie  under 35"

Mattresses For Cribs that Can Be Safely Tilted

Elevating your child’s mattress may help alleviate symptoms of gastroesophageal reflux disease and congestion crib rails and mattress height.

Never place anything on top of the mattress when doing this. Your baby is at risk of being suffocated by sleep positioners, blankets, and pillows.

Place objects under your baby’s mattress to create an inclination. For a 30 degree (about 6 inch) incline, you can use specific anglers, blankets, pillows, or even towels and lower the crib mattress.

Lowering Crib Mattresses in a Safe and Secure Way

When the time is right, lowering your baby’s crib mattress is completely safe, and it will actually make their crib even safer.

Crib-related incidents result in 10,000 emergency department visits each year, many of which are caused by children falling from their crib height. To put it another way, as your baby gets older, you’ll need to change the crib height more than once for baby sleep.

How Do I Lower a Crib Mattress to the Floor?

It’s safe to drop my mattress directly back onto the flooring if my crib is constructed like this to enable this option.

If you are doing a quick DIY-fix, check for no gap between the mattress and the top of the side rail. If you’re able to lower your temperature by raising the height to 33″, you will have to switch to a toddler bed at this age in exchange for your safety.

To understand how to remove its instruction manual in its proper place, read that instructions. You should know that your child is up to a height of 35′ tall.


Why lower the height of a crib’s mattress?

As with increasing your baby’s crib mattress, you may have to decrease it at some point. In the end, your baby’s crib will need to be resized crib rail. It’s common practice to lower your baby’s crib mattress for safety reasons. You don’t want your kid falling out of his or her bed, even if it’s carpeted.

Is the mattress height adjustable in all cribs?

To be honest, it’s difficult to find a mainstream full-size crib that doesn’t come with two mattress height settings. A one-level crib is viable, however, in the case of a tiny crib or a portable option. For a youngster up to 35″ in height, the top of the railing will be 26″ from the ground.


There are numerous reasons to modify the height and angle of your crib mattress. As long as you do it correctly, raising and lowering the mattress height is safe.

Keeping your baby’s crib clean and watching their development will help you determine whether to lower their cot.

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