Skip to Content

Baby Blanket Size Guide: How Big is a Baby Blanket? (2023)

This site is supported by our readers. We may earn a commission, at no cost to you, if you purchase through links.

Search for a size chart for baby blanket? We’ve got you covered.

Expecting a child can be an exciting time for couples. After all, it’s pretty fun to think about how to decorate your future child’s rooms and imagine what their life will hold for you and for them.

However, this kind of planning can also be a source of stress. The sizes of baby blankets and baby quilts in particular can be quite a hassle as babies easily outgrow them within a few months.

Don’t worry, this Quick Guide will help you choose the right baby blanket sizes, baby quilt sizes, crib blanket sizes and crib quilt sizes for your new arrival.

Baby blanket size guide ]

A quick warning before you begin: The American Academy of Pediatrics recommends that you not use soft bedding in your baby’s crib for at least the first year of life, including baby blankets, safety blankets, cotton muslin, pillows or soft toys.

This can increase the risk of SIDS or SIDS, as well as accidental strangulation or suffocation.

, it you only use a close-fitting sheet in your baby’s crib until at least 12 months old.

Baby blanket materials

Your baby’s skin is quite sensitive, so it’s best to wear soft, easily washable materials such as organic cotton and lightweight flannel.

Wool is also a good, durable material; however, you must first make sure that your baby is not allergic to it. Hypoallergenic fabrics or fabrics that are lightweight and breathable are ideal.

While crochet a blanket for your baby, it’s best to avoid it. loose knit blankets until your baby is at least 12 months old.

Watch this video for more information:

Dimensions of the receiving blanket

The first and smallest size of the baby blanket is the receiving blanket, the type that parents take their newborn baby home from the hospital. These can vary in size depending on whether your baby is a preemie (born premature) or not.

The dimensions of the smaller preemie baby blanket should be 18 x 20 inches, while larger preemie The dimensions of the baby blanket should be 24 inches square.

The average size of the newborn blanket should be 28 x 34 inches or 30 inches all around if a square blanket is what you want.

You can also use a 30-inch square quilt or 30 x 40-inch quilt if you prefer.

Baby blanket sizes

How big is a baby blanket?

The average dimensions of the baby blanket are typically 34 x 46 inches, or anywhere from 34 to 36 inches around if you want a square blanket.

Because babies have the vary in size, so do baby blanket sizes, so make sure you choose the right size for your child.

Sizes for baby quilt, crib blanket and crib quilt

All of these are the same size. On average, the blankets are 36 x 52 inches.

However; it is best to measure the dimensions of your baby’s crib beforehand to avoid any sizing changes to the blanket or quilt.

It is always advisable to double check these measurements, as cribs can vary anywhere from 4 to 8 inches in both width and/or length of the average measurements given.

It is best to add length to the quilt if you are still unsure when measuring so that the edges of the quilt overlap the edge of the mattress.

Always remember that crib blankets should be free of loose threads, knots or large holes that could pose a risk to your baby. The same goes for any kind of quilt.

The dimensions of a baby quilt can be larger than 36 inches if desired, especially if you intend to use it solely as a play blanket for your baby to crawl on (these may be a size be bigger). This increased width can also serve as a blanket for your child as they get older.

baby blanket size

The dimensions of the crib blanket can also be smaller, averaging about 30 x 36 inches.

The dimensions of the quilt depend a lot on the pattern you want to sew, as well as the dimensions of the batting and the backing.

If you choose to baste and quilt your baby’s blanket yourself, leave a few inches overhang for both the filling and the backing. However, if you would like to use a long arm quilter instead, you will need to allow 4” (10cm) on each side for both batting and backing.

Guide to Adjusting Quilt Size ]

Of course, after a long time sewing your babys swaddle or quilt, it’s hard to part with it once they’ve outgrown it.

This blanket or quilt can always as a throw or as a safety item for children, but you can also adjust the size of your baby’s blanket or quilt to grow with.

First, it is crucial to know what size you want the quilt to be and whether you want to change the number of blocks or the size of the pre-existing blocks on the quilt. Note that it is easier to change the number of blocks.

For each of these resizing methods, you must first measure the width (A), length () of your old pattern B), and the width of all the borders of the quilt (C).

You will then need to subtract the width of your quilt from the width of the borders to find the width of your center block (AC=D). The same goes for finding the length of this center block (BC=E), as this block is the cornerstone of the entire quilt. You should also do the same with the desired width and length for your new pattern.

Double, or even triple, check your math on these measurements, as they are absolutely crucial to the correct size baby blanket.

To change the number of blocks, the length and width of the center block (D and E) here. Allow 0.5 inch for seam allowances on each square. So, for example, if you’re cutting a 3-inch square, decrease each side by0.5 inch for seam allowances to make a 2.5-inch square.

To calculate how many blocks you need to fit your desired dimensions, take the desired width and length and divide each by the block size. Rounding off the number you end up with gives you a rough estimate of the blocks the quilt will need.


Desired width: 36 inch

Desired length: 52 inch

Block size: 2.5 inches (after seam allowance)

36/2.5 = 14.4 blocks

52 /2.5 = 20.8 blocks

When completed, the sample quilt would be 14 blocks over 21 rows.

To resize the quilt to have the same number of blocks, determine how much larger you need to make your center block.

You must specify a percentage calculate by taking the width and length of your desired measurements and dividing them by the old measurements.


Desired width: 54 inches

Old Width: 36 inch

54/36 = 1.5 or 150%

Old height: 48 inches

48 x 1.5 = 72 inches

Desired length: 72 inches

New dimensions: 54×72 inch

crib quilt size

You must also remove the seam allowance from the size of the center block you need to cut according to the pattern, multiply that by the percentage to which you want to resize the block and add the seam allowance again.


Pattern sizes to cut: 3 inch

Seam Allowance: 0.5 inch

3-0.5 =2.5 inches

Percent increase: 150% or 1.5

2.5 x 1.5 = 3.75 inches + 0.5 inches (seam allowance) = 4.25 inches

So you would then cut to 4.25-inch squares, with the blocks ending 3.75-inches after they .

Use the same number of blocks and placement as the pattern originally requested, and your quilt will in size.

Again, check all your math before you cut to get the measurements correct to get. Don’t feel pressured to make it perfect though!

Our favorite baby blankets

We know that the most of you love the idea of making your own baby blankets and baby quilts, but we thought we’d put together some of our favorite products in case you run out of time to make.

Look at these beauties:


Sizes of baby blankets and quilts, and crib blankets and quilt sizes can can be quite a hassle to agree, so hopefully this guide has given you some insight into finding the one that best suits your baby.

Congratulations Parents! On to the next step!

For more sewing projects and tutorials, visit our Sewing Tutorials section, where you’ll find hundreds of ideas for your next project!

Avatar for Mutasim Sweileh

Mutasim Sweileh

Mutasim is the founder and editor-in-chief of, a site dedicated to those passionate about crafting. With years of experience and research under his belt, he sought to create a platform where he could share his knowledge and skills with others who shared his interests.