When it comes to buying shoes for your little one, one of the biggest challenges is determining the right size. Whether you’re shopping for a newborn or a toddler, selecting the correct shoe size ensures comfort, support, and healthy foot development. However, finding the right size can be a little tricky, especially when shoe sizing systems differ between countries. If you are in the United States, this guide will walk you through everything you need to know about the baby shoe size chart US, and help you confidently choose the best shoes for your baby.
In this blog post, we’ll provide a comprehensive guide to baby shoe sizes in the US, including detailed information on baby shoe size charts by age, conversion charts for different measurements (like CM and inches), and specific insights for both boys and girls. By the end of this article, you’ll have all the tools you need to make an informed decision about baby shoe sizes.
Why Baby Shoe Size Matters
Choosing the right shoe size is more than just a matter of style—it’s essential for your baby’s foot health and comfort. Ill-fitting shoes can lead to discomfort, blisters, and even foot problems later in life. Babies’ feet grow quickly during their first few years, which makes it all the more important to get the right size each time you purchase new shoes.
As your baby starts to walk, their feet need proper support to develop correctly. Properly sized shoes provide a balance of comfort and structure, which encourages healthy movement and development.
The Baby Shoe Size Chart US: A Simple Breakdown
When it comes to baby shoes, sizes are usually given in US infant sizes, which can be a bit different from other countries’ systems. To make it easier for you, we’ve broken down the baby shoe size chart US by age, along with corresponding measurements in both inches and centimeters.
Baby Shoe Size Chart US by Age
| Age Range | US Shoe Size | Foot Length (inches) | Foot Length (cm) |
|---|---|---|---|
| Newborn (0-3 months) | 0 | 3.25″ | 8.3 cm |
| 3-6 months | 1 | 3.50″ | 8.9 cm |
| 6-9 months | 2 | 3.75″ | 9.5 cm |
| 9-12 months | 3 | 4.00″ | 10.2 cm |
| 12-18 months | 4 | 4.25″ | 10.8 cm |
| 18-24 months | 5 | 4.50″ | 11.4 cm |
As you can see, baby shoe sizes progress relatively quickly, so it’s important to check your child’s foot length every few months to ensure their shoes still fit comfortably.
Key Measurements: Inches vs. Centimeters
Baby shoe sizes can be measured in both inches and centimeters, but the US sizing system typically uses inches. When shopping for baby shoes, it’s helpful to know both measurements, especially if you are shopping online or buying from international stores. The baby shoe size chart US includes both inch and centimeter measurements, so you can ensure a perfect fit regardless of the measurement system you are using.
For example, a baby’s foot that measures 3.5 inches corresponds to a size 1 in the US. This size also measures 8.9 cm in length, which can be particularly useful if you’re looking at international brands that use the European system or the metric system.

Conversion Between US and European Sizes
When shopping internationally, you may encounter different sizing systems, such as the European (EU) system. This can make it difficult to choose the right size for your baby. For your convenience, here’s how US baby sizes convert to European sizes:
| US Size | EU Size |
|---|---|
| 0 | 16 |
| 1 | 17 |
| 2 | 18 |
| 3 | 19 |
| 4 | 20 |
| 5 | 21 |
When looking for shoes online or in international stores, use these conversion charts to ensure you’re choosing the correct size. Keep in mind that sizing can still vary by brand, so always double-check the store’s size guide before making a purchase.
Baby Shoe Size Chart US for Boys and Girls
Though baby shoe sizes are generally the same for boys and girls, some brands offer designs or specific sizing options tailored to gender. For example, baby shoe size chart US girl shoes might feature different colors or styles, while baby shoe size chart US boy shoes could include designs with different patterns or construction.
However, the measurements themselves typically remain the same across genders. Whether you’re shopping for a baby shoe size chart US girl or a baby shoe size chart US boy, the length of the foot is the deciding factor for determining the correct size.
Understanding Toddler and Big Kid Shoe Sizes
As your child grows, their foot size will continue to increase, and the shoe sizing system will shift from “baby sizes” to “toddler” and “big kid” sizes. It’s important to be familiar with these different size categories, as the progression of foot growth can vary by age.
Toddler Shoe Size Chart US by Age
| Age Range | US Shoe Size | Foot Length (inches) | Foot Length (cm) |
|---|---|---|---|
| 2-3 years | 7 | 5.00″ | 12.7 cm |
| 3-4 years | 8 | 5.25″ | 13.3 cm |
| 4-5 years | 9 | 5.50″ | 14.0 cm |
| 5-6 years | 10 | 5.75″ | 14.6 cm |
Big Kid Shoe Size Chart US
| Age Range | US Shoe Size | Foot Length (inches) | Foot Length (cm) |
|---|---|---|---|
| 6-7 years | 11 | 6.00″ | 15.2 cm |
| 7-8 years | 12 | 6.25″ | 15.9 cm |
| 8-9 years | 13 | 6.50″ | 16.5 cm |
| 9-10 years | 1 | 6.75″ | 17.1 cm |
When it comes to big kid shoe sizes, the sizing increases rapidly, so it’s important to check regularly.
Frequently Asked Questions
What size shoe is a 1-year-old?
A typical 1-year-old will wear a shoe size ranging from 3 to 4 in US sizing, depending on their foot growth. However, it’s essential to measure your baby’s feet regularly, as their foot size can change quickly during this stage. The foot length for a size 3 shoe is around 4 inches (10.2 cm), while size 4 measures about 4.25 inches (10.8 cm).
What size are kids shoes in the US?
Kids’ shoe sizes in the US generally range from 0 (newborn) to 13 (big kids), after which they transition into adult sizes. For toddlers, you’ll find sizes ranging from 0 to 5, while bigger kids (ages 4 and up) typically wear sizes 6 to 13. Keep in mind, children’s feet grow quickly, so always measure their feet before purchasing shoes.

What are US infant sizes?
US infant sizes typically start at 0 and go up to 4, with each size representing the length of the baby’s foot. A size 0 is typically for newborns, while size 1 is for babies aged 3 to 6 months, and size 3 is for babies nearing their first year. You can refer to a baby shoe size chart for more accurate foot measurements in inches and centimeters.
How to check baby shoe size?
To check your baby’s shoe size, measure their foot length from heel to toe using a soft ruler or a piece of paper. Make sure your baby is standing or sitting with their foot flat for the most accurate measurement. Once you have the foot length, compare it to a baby shoe size chart that includes US sizes in both inches and centimeters to determine the right shoe size.
How often should I check my baby’s shoe size?
It’s a good idea to check your baby’s shoe size every 2 to 3 months, as their feet grow rapidly in the first few years of life. Regular checks will ensure that their shoes fit properly and provide the necessary support for healthy foot development.
What’s the difference between US and European baby shoe sizes?
US baby shoe sizes are based on foot length in inches, while European shoe sizes use a different system. To convert between US and European sizes, you can use a size conversion chart. For example, a US size 1 corresponds to a European size 17. Always refer to the specific brand’s size guide when shopping internationally.
Are toddler shoe sizes the same for boys and girls?
Yes, toddler shoe sizes in the US are the same for both boys and girls, though the styles and designs may differ. The size of the shoe is determined by foot length, not gender. To find the perfect fit, measure your toddler’s feet and refer to the shoe size chart.
How do I know if my baby’s shoes fit properly?
To ensure your baby’s shoes fit properly, check that there is enough room for their toes to wiggle, but not too much extra space. A general rule of thumb is to leave about a thumb’s width of space between the shoe and the toes. The shoe should also be snug around the heel to prevent slipping.
What is the typical shoe size for a 2-year-old?
A typical 2-year-old may wear a shoe size ranging from 5 to 6 in US sizes. However, it’s always important to measure your child’s feet, as there can be variations in growth rates. A size 5 shoe typically measures 4.5 inches (11.4 cm) in length, while a size 6 measures around 4.75 inches (12.1 cm).
Can I use the same shoe size for boys and girls?
Yes, the shoe size for boys and girls is generally the same. The only difference is the style and design of the shoes, not the size. Focus on your baby’s foot length when choosing shoes, and you’ll find that both boys’ and girls’ shoes will fit similarly if the size is correct.
Conclusion
Choosing the right shoe for your baby can seem daunting, but with the help of the baby shoe size chart US, it doesn’t have to be. Always measure your baby’s feet to ensure they’re getting the best fit possible, and don’t forget to check regularly as their feet grow quickly. Whether you’re using inches, centimeters, or shopping internationally, understanding your baby’s shoe size is crucial to keeping them comfortable and supporting their foot development.
So, next time you go shopping for your little one, make sure to use this guide to find the perfect pair. Healthy feet lead to happy steps, so don’t compromise on quality or fit when it comes to baby shoes.




