Baby Clothes Size Chart: A Step-by-Step Guide to Finding the Right Size

1 comment by Mark Jacobovits
Baby Clothes Size Chart: A Step-by-Step Guide to Finding the Right Size
Photo by Matilda Wormwood

Choosing the right-size baby clothes for your little one seems like it should be simple enough — in theory. Baby clothes are typically sized by age, so you'd think you would just buy pieces that correspond to your baby's age and that would be it.

Unfortunately, that's not always how it works. Like adults, infants come in all shapes and sizes. And different brands of baby clothes are not consistently sized the same way.

So, if you’re feeling lost when it comes to baby’s clothing sizes, you’re not alone. Here are a few tips to keep in mind when shopping or organizing a baby's closet.

Importance of Choosing the Right Size

When it comes to dressing your baby, choosing the right size is crucial for their comfort and well-being. Ill-fitting clothes can cause irritation, restrict movement, and even affect their development.

Additionally, buying baby clothes that are too small will result in them outgrowing them quickly, leading to frequent shopping trips and unnecessary expenses.

On the other hand, purchasing clothes that are too big can pose safety risks, such as tripping on oversized pants or sleeves covering their hands.

It's essential to find the right balance between comfort, functionality, and proper fit when selecting baby clothes.

Overview of Baby Clothes Size Chart

Baby Clothes Size Chart

Body Measurement

To help parents navigate the world of baby clothes sizes, a baby clothes size chart serves as a valuable tool.

This chart provides a general guideline for selecting the appropriate size based on various factors such as age, weight, and height.

However, it's important to note that each baby is unique and may deviate from the average measurements.

The size chart typically includes sizes ranging from preemie to 24 months, with corresponding age ranges, weights, and lengths.

It's important to consult the specific size chart provided by the brand you're interested in purchasing from, as sizing can vary between brands. Checkout our kids clothing size chart.

Now, let's dive into a step-by-step guide on understanding baby clothes sizes and finding the right fit for your little one.

Understanding Baby Clothes Sizes

When it comes to baby clothes sizes, there are several factors to consider, including age, weight, and height. Let's take a closer look at each of these factors:

Age-Based Sizing

One common method of sizing baby clothes is by age. This method categorizes clothing sizes into newborn, infant, and toddler sizes based on the child's age in months or years.

For example, newborn clothing is typically marked as NB, while infant clothing may be labeled as 0-3M or 3-6M.

It's important to keep in mind that babies grow at their own pace, so the age-based sizing may not always align with your baby's actual size.

It's recommended to size up when uncertain, as babies tend to grow quickly, and slightly larger clothing can be adjusted or rolled up if needed.

Weight-Based Sizing

In addition to age, weight is another factor used to determine baby clothes sizes. Many clothing brands base their sizes on average baby weight at a given age range.

The weight-based sizing provides a more personalized approach and allows for a better fit, considering the individual variations in baby sizes.

Typically, baby clothes sizes based on weight range from preemie (up to 5 pounds) to toddler sizes such as 2T and 3T (ranging from 29 to 35 pounds).

It's essential to consult the specific size chart provided by the brand to ensure accurate sizing.

Here’s a general guide for baby clothing sizes by weight:

  • P (Preemie): Preemie clothes are clothes that are specially designed for premature babies who are smaller than average newborns. The size of preemie clothes can vary by brand, but generally they are based on the baby's weight and length.
  • NB (Newborn): Newborn clothes are clothes that are designed for babies who weigh between 5 to 7 pounds and measure up to 21.5 inches long They are usually the first size of clothes that babies wear after they are born. However, some babies may outgrow them quickly or skip them altogether if they are bigger or smaller than average. Therefore, it's a good idea to have a few pieces of NB clothes on hand, but not too many, as you may need to switch to a larger size soon. 
  • 3 Months: 3 months clothes are clothes that are designed for babies who weigh between 7 to 11 pounds and measure up to 24 inches long. They are usually the next size of clothes that babies wear after they outgrow the NB size. 
  • 6 Months: Are clothes that are designed for babies who weigh between 11 to 16 pounds and measure up to 26.5 inches long They are usually the next size of clothes that babies wear after they outgrow the 3 months size. 
  • 9 Months: Are clothes that are designed for babies who weigh between 16 to 20 pounds and measure up to 28.5 inches long. They are usually the next size of clothes that babies wear after they outgrow the 6 months size. 
  • 12 Months: Are clothes that are designed for babies who weigh between 20 to 24 pounds and measure up to 30.5 inches long. They are usually the next size of clothes that babies wear after they outgrow the 9 months size.
  • 18 Months: Are clothes that are designed for babies who weigh between 24 to 28 pounds and measure up to 32.5 inches long. They are usually the next size of clothes that babies wear after they outgrow the 12 months size. 
  • 24 Months: Are clothes that are designed for babies who weigh between 28 to 30 pounds and measure up to 34.5 inches long. They are usually the next size of clothes that babies wear after they outgrow the 18 months size.

Height-Based Sizing

While age and weight are common sizing factors, some brands, especially those using European sizing standards, base their sizes on height rather than age.

European baby clothes size charts are labeled in centimeters and display the maximum height per size.

For example, size 60 in European baby clothes size charts is meant for a maximum height of 60 centimeters (approximately 23.6 inches), while size 70 corresponds to a maximum height of 27.5 inches.

These height-based sizes provide a more precise fit, as they take into account the length of the baby rather than relying solely on age or weight.

Gender-Based Sizing

Gender-based sizing is another consideration when it comes to baby clothes. While many brands offer unisex options, some clothing items may be specifically designed for boys or girls. These gender-based differences may include variations in colors, patterns, and styles.

It's important to note that gender-based sizing doesn't necessarily mean the actual measurements differ. However, certain designs may be more tailored to fit the typical body shape associated with a particular gender.

Measuring Your Baby for Clothes

Now that we've covered the different factors involved in baby clothes sizing, let's discuss how to measure your baby accurately to ensure the best fit. Here's what you'll need and how to take accurate measurements:

Tools Needed

To measure your baby for clothes, you'll need a few basic tools:

  • A tape measure or ruler
  • A soft measuring tape (preferably fabric or flexible)
  • A willing assistant (it can be challenging to measure a squirming baby on your own!)

Taking Accurate Measurements

Follow these 5 simple steps to take accurate measurements of your baby:

  1. Lay your baby flat on their back on a stable surface, such as a changing table or bed.
  2. Ensure your baby is calm and relaxed to minimize movement during the measurement process.
  3. Using the soft measuring tape, measure your baby's length from the top of their head to the bottom of their feet. This measurement represents their height.
  4. Next, measure your baby's weight using a baby scale or by weighing yourself while holding your baby and then subtracting your weight from the total.
  5. Record the measurements in inches or centimeters, depending on the size chart provided by the brand.

Using the Baby Clothes Size Chart

Once you have accurate measurements of your baby's height and weight, you can refer to the baby clothes size chart provided by the brand.

This chart will help you determine the appropriate size based on your baby's measurements.

It's important to note that different brands may have slight variations in their sizing, so it's recommended to consult the specific brand's size chart before making a purchase.

Additionally, considering customer reviews and feedback can provide insights into how a particular brand's clothing fits.

Tips for Buying Baby Clothes

Armed with the knowledge of your baby's measurements and an understanding of baby clothes sizes, you're ready to shop. Here are some tips to keep in mind when buying baby clothes:

Shop in Advance

Babies grow quickly, so it's a good idea to shop for clothes ahead of time. This allows you to be prepared for the next growth spurt and reduces the stress of having to shop for new clothes at the last minute.

Consider the Season

When shopping for baby clothes, consider the season and climate. Choose breathable, lightweight fabrics for warmer months and cozy, warm materials for colder weather. Additionally, make sure to select appropriate outerwear to protect your baby from the elements.

Check the Material

The material of the baby clothes is essential for your baby's comfort and safety. Opt for soft, natural fabrics such as cotton, which are gentle on your baby's skin and allow for breathability. Avoid materials that may cause irritation or allergies, such as synthetic fabrics.

Buy a Mix of Sizes

Since babies grow at different rates, it's helpful to have a mix of sizes in their wardrobe. This ensures that you have clothes that fit well at every stage of their growth and minimizes the chances of being caught off guard by a sudden growth spurt.

Common Questions about Baby Clothes Sizes

Parents often have questions when it comes to baby clothes sizes. Here are some common queries and their answers:

What if My Baby Falls Between Two Sizes?

If your baby's measurements fall between two sizes, it's generally recommended to choose the larger size. This allows for some growing room and ensures that the clothes will not be too tight or restrictive.

Should I Buy Clothes that are a Little Bigger?

It's a good idea to buy clothes that are slightly larger than your baby's current size, as they will likely grow into them in no time.

However, avoid buying clothes that are too big, as they can pose safety risks and be uncomfortable for your baby.

How Often Should I Check My Baby's Size?

It's essential to regularly check your baby's size, as they can grow rapidly in the first few months of life.

It's a good idea to measure their height and weight every couple of months or so, particularly during growth spurts.

This will help you stay up to date on their clothing needs and ensure that their wardrobe is always appropriately sized.

What Size is Preemie Clothes?

Preemie Clothes typically range from 0-3 pounds to 5-7 pounds.

What Is Size 70 In Baby Clothes?

Size 70 in baby clothes is a European size that corresponds to babies who are 7 to 12 months old or have a height of 26 to 30 inches.

In the US, size 70 is similar to a 6–12-month size and should fit babies who are 16 to 20 pounds, or 26 to 28 inches long.

However, different brands may have different size charts, so it's always best to check the specific measurements before buying. 

Conclusion

Finding the right baby clothes size for your little one may seem daunting at first, but with the right tools and knowledge, it becomes much more manageable.

By understanding the different factors involved in sizing, taking accurate measurements, consulting brand-specific size charts. And following the tips provided above, you'll be well-equipped to outfit your baby in comfortable well-fitting clothes that allow them to grow and thrive. Remember, a happy baby equals happy parents!

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1 comment


  • Christopher Kyle Abrenica

    I want to buy my granddaughter something


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