Buying clothes for kids shouldn’t be this stressful—but if you’ve ever stood frozen in a baby aisle wondering what “6M” really means, you’re not alone.
While the Carters Size Chart is designed to help, it’s still easy to get lost in the tags and age labels. Pair it with a reliable baby clothing size guide, and you’ll have a much clearer idea of what actually fits.
I remember buying my niece a cute little romper and wondering if “12 months” actually meant a 1-year-old would fit in it—or outgrow it tomorrow. Turns out, there’s more to sizing than just going by age.
This guide breaks it down for you—clear, easy, and without the confusion.
Understanding Carters Sizes: What Do Those Labels Mean?
Carters organizes its sizing by age groups, but kids don’t always grow according to the calendar. That’s where the size chart becomes your best friend. It helps you match your child’s height and weight to the right fit, avoiding too-snug or overly baggy clothes. By using it as a guide, you can shop confidently and skip the frustration of constant returns.
Infant Sizes (0–24 Months)
This range includes:
- NB or 0M: Newborns
- 3M, 6M, 9M: Corresponds to the baby’s age in months
- 12M, 18M, 24M: For older babies nearing toddlerhood
Each size also ties to height and weight, not just age. So check those numbers before you grab that adorable onesie.
Toddler Sizes (2T–5T)
For the little walkers, climbers, and snack hoarders. These sizes fit children from roughly age 2 to 5. They include more room for movement and diaper accessibility.
Kid Sizes (4–14)
Once your kiddo graduates from toddler status, these sizes take over. Carters Big Kid line offers tees, leggings, and school-ready clothes in this range.
Why Height and Weight Matter More Than Age
One of the biggest mistakes I see? Picking sizes solely based on age. Babies grow differently, and that 9-month-old on the chart might be wearing 12M clothes already.
Always go by your child’s height and weight first. Most Carters tags and the size chart online will give exact measurements. Use a tape measure at home or check with your pediatrician for current stats.
If your child is in between sizes, size up—especially if you want room to grow or you’re planning ahead for the next season.
How to Use the Carters Size Chart the Smart Way
Using the chart doesn’t have to be complicated. Here’s my go-to process:
1. Take Measurements First
Measure your child’s height (top of the head to heel) and current weight. Don’t guess—growth spurts can surprise you.
2. Match with Chart Guidelines
Carters’ official size chart lists ranges for each size. For example, 6M fits babies 12.5–17 lbs and 24–26.5 inches tall. The full chart is available on Carters under each product page. It’s updated regularly and accounts for most fabrics and fits.
3. Think About Shrinkage and Stretch
Cotton items, especially onesies and footies, may shrink slightly after washing. If you’re close to a size cutoff, go one size up.
Real-Life Tips for Shopping with the Size Chart
Here’s what I’ve learned over many Target runs and baby showers.
Size Up for Longevity
If your baby is 6 months old but on the taller side, 9M will likely last longer and save you from rebuying too soon.
Prioritize Flexibility and Comfort
Look for stretchy waistbands, snap closures, and roomy leg holes. Carters excels at designing clothes that move with your child.
Stock Up on Essentials
Basics like onesies, bodysuits, and pajamas are perfect for bulk-buying. I keep a drawer of multiple sizes so I’m always ready for the next growth spurt.
Can You Trust the Carters Size Chart?
In most cases, yes. Carters is known for being true to size, especially compared to other baby brands. That said, always double-check before a big haul. Try one or two items before buying multiples in the same size. Also, Carters has a solid return policy if something doesn’t fit right. Keep in mind that babies grow quickly, so you may want to size up for longer wear. Seasonal items, like coats or swimwear, can also fit differently, so checking the Carters size chart before each purchase is always a smart move.
Your Questions—Answered
What does 3T mean in Carters sizing?
3T is made for toddlers around 3 years old. It typically fits kids 34.5–38 inches tall and 29–33 lbs. It’s ideal for walkers and potty-training toddlers.
Do Carter’s sizes match other brands?
Not exactly. Carters tend to run slightly more accurately or true to size, while brands like Gerber may run small. Always check each brand’s size guide separately.
Can newborns fit in 0-3M sizes?
Sometimes—but “newborn” size is better for babies under 8 lbs. 0–3M often fits babies 8–12 lbs, so it may be too big right after birth.
Are Carter’s toddler and baby clothes the same?
No. Baby clothes (up to 24M) are cut differently to accommodate diapers and infant movement. Toddler clothes (2T+) are made for kids who are mobile and starting to dress themselves.
Sizing Confidence Starts with Good Info
Buying the right size for your little one doesn’t have to be a guessing game. Once you understand the Carters size chart and how to use it, shopping becomes easier, faster, and way less stressful. So go ahead and grab that matching set or cozy sleeper—just make sure it fits more than once!
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