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Crib Sheet Size Guide: Standard Crib Mattress Sheet Sizes

Crib Sheet Size

To all the future parents out there, listen up!

There’s no universal answer to the best crib sheets for your new baby.

But don’t be alarmed.

Whether you’re a new parent or an aspiring parent to be, let’s start with the most basic and important piece of information.

Table of Contents
Table of Contents

What Is the Standard Size of a Crib Sheet? [in Inches & cm]

It depends. Are we talking about your regular-sized crib, bassinet, or mini-crib?

Below, we provided you with the standard sizes for a standard crib, mini-crib, and bassinet, respectively.

But, if you’re paranoid like us, you can also measure the bed, record it, and bring this information with you when purchasing crib sheets.

You can follow this guide to help you find the perfect size of mattresses and buy the right bedding sheets.

1. Standard Crib

1. Standard Crib

The standard baby crib sheets size is 52  inches long (132.08 cm) by 28 inches wide (71.12 cm).

Preferably, the baby sheets should be in this size to fit snugly with your baby’s mattress.

Standard baby cribs can turn into toddler beds, depending on whether it was designed for that purpose.

Given the dimensions of a baby’s crib, it will be best suited for a baby’s room that’s wide.

2. Mini-Crib

2. Mini-Crib

A mini-crib mattress is much smaller than a standard one. 

If you have a mini crib, the size of the baby’s sheets must be 24 inches long (60.96 cm) by 38 inches wide (96.52 cm).

To get perfect fitted sheets for mini cribs, it’s best to go for this size.

Some mini cribs come with wheels and can be folded flat. This is an ideal option if you want a design you can easily store and move around without hurting your back.

3. Bassinet

3. Bassinet

A bassinet is smaller than a regular crib. It’s the perfect option for parents who want to co-sleep with their baby during the first months of their birth.

You can place this next to your bed for easier access to your baby.

For that perfect fitted crib sheet size, it should be 28 inches long (71.12 cm) and 20 inches (50.08 cm) wide.

4. Travel Crib/Portable Crib/Pack ‘n’ Play

4. Travel Crib-Portable Crib-Pack _n_ Play

A travel crib is the most lightweight and the easiest to pack of them all.

It’s easy to assemble and disassemble, which is good for storage purposes or when your baby has to visit grandma for the weekend.

The standard pack ‘n’ play mattress size is 42 inches long (106.68 cm) and 24 inches wide (60.96 cm).

Another upside to this play mattress is that it keeps your baby warm and safe amidst being out in the open.

Are All Crib Mattress Sheets the Same Size?

A baby’s crib mattress has numerous crib designs, such as a standard, mini, bassinet, travel crib, and more.

However, the ANSWER to your question is as follows: Crib mattress sheets have different sizes.

And before we forget…

Make sure the crib mattresses fit tightly so that your baby doesn’t accidentally get tangled with the sheets.

REMEMBER: Keeping your baby comfortable will ensure a good night’s sleep for both you and your baby!

Are Crib Sheets a Standard Size?

These technically DO and DO NOT follow a standard size.

If you plan to purchase a standard mattress, we highly recommend you buy a standard crib sheet. If you opt for different mattress sizes, then you have to buy a different one that fits.

There are a wide variety of baby crib sheets in the market; all you have to do is measure it to pick the right sheet, and buy enough sheets that will last!

Do All Crib Sheets Fit All Crib Mattresses?

These are not universal; they vary greatly.

Whether it would fit or not depends on what baby crib mattress size you have.

So be sure to pick the right size sheets for the type of crib your baby has!

Different Types of Crib Sheet Materials: Which Material Is the Safest for Your Baby?

Picking out the right bedding for the mattress is ESSENTIAL.

Why? This serves as a barrier between your baby and the bed.

Pesky dust mites tend to lurk around beddings, but fear not because clean sheets with the best material are the solutions to this!

We’ve listed down some of the best fabrics you should keep an eye out for:

#1 Cotton


First, on the list, we have cotton sheets. These are a classic and automatic choice for parents. Some of them are also considered organic sheets.

Cotton sheets are known to be soft, affordable, and breathable!

Here are the pros and cons of cotton sheets:


  • Soft, affordable, breathable
  • Easy to clean
  • Available in stores


  • If made from low-quality cotton, the babies can feel scratchy
  • Prone to wrinkle
  • Can wear thin over time

There is also a wide variety of designs that are cotton-made. If you want the crib to look fun and cute, this is the clear choice for you!

Like we mentioned previously, some of them also come in organic sheets if that’s what you prefer.

#2 Bamboo


Moving on to the next, we have bamboo.

Bamboo bedding gained popularity over time due to its eco-friendliness.

Here are the pros and cons of this type of bedding:


  • Organic bamboo bedding is softer than cotton sheets
  • Hypoallergenic and anti-bacterial
  • Durable than other traditional sheets


  • These organic fabrics are expensive

#3 Polyester


Polyester is next on our list. These crib sheets are a good choice if you want to save money. 

Here are the pros and cons:


  • Inexpensive
  • Available in most stores
  • Retains appearance and shape


  • Low quality
  • Can irritate sensitive skin
  • Not as breathable as compared to the fabrics mentioned above

#4 Flannel


If you live on the colder side of town, then these crib sheets are your best bet.

The pros and cons of flannel crib sheets are listed below:


  • Ideal for winter
  • Durable
  • Easy to care for and clean


  • Not breathable
  • Can overheat your baby
  • Prone to pilling

Frequently Asked Questions


Are Crib Sheets and Toddler Bed Sheets the Same Size?

Typically, crib sheets and toddler bed sheets are the same sizes because their mattress sizes are also similar.

The measurement of baby sheets is 52 inches x 28 inches, while toddler/baby bed sheets and mattresses are also 52 inches x 28 inches.

The difference between the set is that toddler/baby bed sheets usually come with bedding sets. These bedding sets include a pillowcase, a top sheet, and sometimes a blanket.

Are Crib Sheets the Same Size as a Twin Sheet?

Crib sheets and twin sheets DO NOT share the same size.

Twin sheets are best suited for a twin bed and crib sheets for baby cribs.

Twin sheets measure up to 75 inches long and 39 inches wide. This is way bigger than a baby mattress.

This is why it is advised that when a kid outgrows their toddler bed, their parents must now get them a twin bed which would require twin sheets. 

Do Crib Sheets Have to Be Fitted?

Loose sheets are definitely a no-no.

The baby crib sheet should TIGHTLY fit the mattress.

Why? Because loose crib sheets can be a MAJOR suffocation risk and SIDS risk to your little one. (we’ll talk more about this below.)

Keep that in mind whenever you secure the bed of your baby.

The elastic should easily hook along the edges of firm mattresses as much as possible!

Fitted and flat sheets are the GOAL.

Are All Crib Sheets Fitted?

A fitted crib sheet will only fit snugly if it is the right size for the mattress.

Crib mattresses must have fitted sheets to provide the baby with the right comfort and safety.

To know if the sheets are fitted, make sure the mattress has firm corners where the sheets can be tucked away.

Flat sheets and fitted sheets are other topics we can shed light on:

  • A flat crib sheet is used to make the bed feel more welcoming, which is great for the baby. A flat sheet also helps regulate body temperature at night.
  • Fitted sheets, on the other hand, have elasticated corners and are designed to stay in place on the bed.

IMPORTANT NOTE: Avoid putting pillows or a mattress pad inside your baby’s crib. For the safety of babies, firm surfaces and bare cribs are a MUST. Remember this when you’re out buying sheets!

What Are the Hazards of Loose Sheets?

It’s CRUCIAL for crib sheets to fit the bed. We can’t stress this enough!

Crib sheets tend to get dislodged overnight while the baby sleeps. The possibility of suffocation is high if cribs sheets are not secured properly on the bed.

An infant’s airway can be blocked, which could then lead to unintentional suffocation or Sudden Infant Death Syndrome (SIDS).

Baby crying

Since we’re talking about hazards, there are recommendations by experts about the Dos and Don’ts of putting your baby to sleep.

The American Academy of Pediatrics has voiced out its concerns about wrongful information in regards to safe sleep.

Luckily for you, we listed down all the Dos and Don’ts below:


  • DO lay your baby on their back.
  • DO choose a firm mattress.
  • DO ensure that that you follow current safety standards.
  • DO add mattress pads for extra comfort.


  • DON’T add extra pillows or extra blankets on the bed.
  • DON’T use positioners or wedges in the cribs.
  • DON’T use bumper pads.

How Do I Make My Own DIY Crib Sheets?

As a bonus piece of information for moms who love doing DIY projects for their little ones, here’s a quick guide on how you can make your own crib sheets at home!

To make your own baby crib sheets, you’ll need the following:

  • The fabric needed is 2 yards of 44″ wide
  • Sewing machine
  • Sewing machine needle
  • Matching thread
  • Sewing pins
  • Safety pins
  • Fabric scissors
  • Measuring tape
  • 8″ square paper pattern (for cutting out the corners)

To create your own baby crib sheet, we have a 7 step process you can follow:

  1. Cut the fabric so that you get a piece that measures 68″ long x 44″ wide.
  2. Cut out the corners using the 8″ square paper.
  3. Pin the edges of the corners that have been cut. Sew with a 5/8″ seam allowance to create corner seams.
  4. Hem the edge of the sheet.
  5. Create a small casing for the elastic. Then fold the edge under 1/2 inch and sew with a straight stitch. Remember to leave a 1″ opening so that you can insert the elastic.
  6. Cut the elastic about 60-70″ long. Feed the elastic through the casing, then overlap the elastic ends and sew them together.
  7. Sew the small opening shut. You can either do this to add your personal touch to your baby’s bed or give it as a gift during baby showers.

Final Words

Who would’ve thought that buying the correct crib sheets could affect our babies so much?

We hope this guide informed you of the dangers of loose sheets and the IMPORTANCE of buying the CORRECT crib sheet sizes!

Feel free to share this guide with other parents; let them know that the fabric or color of the sheets shouldn’t be their main concern — it should be the size!


October 10, 2022 – added 1 new article link, minor content edits

About the author

Angelica Graham

A few years ago, Angelica found out about all the plastic and toxic ingredients that got into most children’s products. And this worried her to no end. Because of this, she began to research what the best ingredients and materials were for children and made it her mission to share this information with other mothers.