Accurate US Kids' Clothing Size Calculator
Wondering what size to buy for your child? Our free US Kids Clothing Size Calculator helps you find the right size in seconds using your child's height and weight. Whether you're shopping for baby clothes, toddler outfits, or big kid apparel, this tool gives you the most accurate size match based on standard American size charts.
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Disclaimer: This calculator provides an estimated size based on the US sizing data provided. Sizing and fit can vary significantly between brands. Always check a specific brand's size chart for the most accurate fit. We may earn a commission from purchases made through links on this site.
How Our US Kids' Clothing Size Calculator Works
Choosing the right clothing size for kids can be tricky—especially when shopping online from popular US stores like Carter’s, Old Navy, The Children’s Place, or Target. That's why we created this free USA Kids Clothing Size Calculator — to help American parents, grandparents, and caregivers find accurate size recommendations based on their child's height and weight.
Whether you're shopping for baby clothing (Preemie, Newborn, 0–3 months) or big kids' clothes (sizes 6–16), our tool takes the guesswork out of sizing. Simply enter your child's height and weight in inches/pounds or cm/kg, and you'll get an instant US clothing size suggestion based on official sizing charts used by most American brands.
Why Accurate Sizing Matters in the USA
In the US, kids' clothing sizes can vary significantly between brands. A size 5T in one brand may fit like a size 6 in another. Our calculator helps avoid returns and wasted money by offering a personalized sizing result, along with alternative size recommendations for room to grow.
This tool is especially useful during back-to-school shopping, holiday sales, or when buying clothes as gifts. And because we update our size chart regularly using the latest US standards, you can trust that the result is always current.
Trusted by US Shoppers Nationwide
Parents across the United States—from California to New York—use our kids’ size calculator every day to make confident online purchases. Whether you're shopping at Walmart, Amazon, or Gap, our calculator can help guide your decision with ease.
Try it now and find the right fit for your child today!