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Calvin Klein Kids
Here’s how Calvin Klein Kids fits your child compared to other brands you might be considering, so you know before it’s in your cart.
Find your child’s size in Calvin Klein Kids
Enter your child’s measurements once — we’ll size them in Calvin Klein Kids and at 100+ other brands, each from that brand’s own published chart. Height and weight are required; add chest, waist, hips and inseam to sharpen the fit.
Your child wears one size in Calvin Klein Kids. What should you buy elsewhere?
Pick the size your child wears at Calvin Klein Kids to see which brands have the same label and measurements (twins) and which run shorter or longer (strangers) — based on each brand’s own chart.
Show the full cross-brand table (every size)
| Calvin Klein Kids | Size twinssame number fits the same | Size strangerssame number, different cut |
|---|---|---|
| 0/3 Months22–24" | None — consistent across brands | |
| 3/6 Months24–26" | Mayoral↑ longer | |
| 6/9 Months26–28" | Mayoral↑ longer | |
| 12 Months28–30" | Mayoral↑ longer | |
| 18 Months30–32" | Mayoral↑ longer | |
| 24 Months32–34" | — | Kohl's Jumping Beans↑ longer |
| 2T33–35" | H&M Kids↑ longerBurt's Bees Baby↑ longerCarter's↑ longerHudson Baby↑ longerLittle Planet by Carter's↑ longerOshKosh B'gosh↑ longer+1 more | |
| 3T35–37" | H&M Kids↑ longerKohl's Jumping Beans↑ longerPolo Ralph Lauren Kids↑ longerColumbia Kids↑ longerEddie Bauer↑ longerNautica↑ longer+8 more | |
| 4T39–41" | Tommy Hilfiger Kids↓ shorter | |
| 439–41" | Noralee↑ longer | |
| 5T40–42" | BoxLunch↑ longerCat & Jack↑ longerPatagonia Kids↑ longerFabletics↑ longerKohl's Jumping Beans↑ longerMonica + Andy↑ longer+14 more | |
| 541–44" | Polo Ralph Lauren Kids↑ longer | |
| 644–47" | ||
| 6X47–48.5" | None — consistent across brands | |
| 748.5–51" | Converse Kids↓ shorterLevi's Kids↓ shorterNext Kids↓ shorterMonica + Andy↓ shorterU.S. Polo Assn.↓ shorterMagnetic Me↓ shorter+5 more | |
| 851–53.5" | Il Gufo↓ shorterBonpoint↓ shorterU.S. Polo Assn.↓ shorterNext Kids↓ shorterMini Mioche↓ shorterJacadi↓ shorter+10 more | |
| 1053.5–56" | ||
| 1256–58.5" | Noralee↑ longerRylee + Cru↑ longerMayoral↑ longerHanna Andersson↑ longerJacadi↑ longerMagnetic Me↑ longer+12 more | |
| 1458.5–60.5" | Petit Bateau↑ longerLacoste Kids↑ longerMini Mioche↑ longerMonica + Andy↑ longerRylee + Cru↑ longerConverse Kids↑ longer+5 more | |
| 1660.5–62.5" | Petit Bateau↑ longerAppaman↑ longerLacoste Kids↑ longerConverse Kids↑ longerLevi's Kids↑ longerIl Gufo↑ longer+3 more | |
| 1864.5–67" | Justice↓ shorterWalmart Wonder Nation↓ shorterCat & Jack↓ shorterTommy Hilfiger Kids↓ shorterColumbia Kids↓ shorterLands' End Kids↓ shorter+9 more | |
| 2067–69.5" | Justice↓ shorterWalmart Wonder Nation↓ shorterLands' End Kids↓ shorterReebok Kids↓ shorterMacy's Epic Threads↓ shorterKohl's SO↓ shorter+4 more |
Sizes shown use Calvin Klein Kids’ girls’/unisex chart where the brand splits by gender; boys’ sizes at the same number can run slightly taller.
In short
Where the number just works. At 0/3 Months, 6X, Calvin Klein Kids lines up with every brand we track — the size carries straight over.
Where labels drift. The exceptions are the “strangers” above — e.g. at size 5, Polo Ralph Lauren Kids cut the same number differently. Check those before you trust the label.
Bottom line: for most sizes, a Calvin Klein Kids number is a safe bet elsewhere — measure once, then double-check only the handful of “stranger” brands above.
Curious about a size that isn’t your child’s here? Every size, compared across every brand, lives here: Browse all size comparisons →
Fit & the transitions that trip parents up
Calvin Klein Kids-specific things the size number alone won’t tell you — drawn from its own charts.
Runs small and slim — size up
The dress shirts are cut slim and the most common note is that they run small, so size up — especially for an average or broad build. Slender kids tend to like the trim fit as-is.
Boys and girls are charted separately
Calvin Klein charts boys (to size 20) and girls (to size 16) on separate ladders, so size by the matching line.
Specialty & inclusive fits
Which trimmer, roomier, or adaptive cuts Calvin Klein Kids publishes alongside its standard sizes.
What shoppers say about the fit
Community consensus
Shopper opinion · not Little & Youth’s measurementThis is what parents report anecdotally — crowd sentiment, not a Little & Youth determination. Our sizing above is computed from Calvin Klein Kids’ own published chart; the notes here come from public parent discussion.
Calvin Klein Kids runs small and slim — size up. Its big-boys dress shirts are cut slim (parents of slender children specifically praise the fit), and across hundreds of ratings the most common note is that they run small with a recommendation to size up. Macy’s aggregated fit meter sits left of neutral, toward “runs small.” The shirts are well-liked for soft fabric and a sharp look; just order a size up, especially for an average or broad build.
Based on anecdotal discussion from multiple publicly available online sources; your experience may differ.
Should you buy Calvin Klein Kids?
Consider it if…
- You have a slim or average-build child — the slim cut is flattering on slender frames.
- You want sharp dress shirts — soft stretch poplin that looks polished for occasions.
- You want recognizable branding at a mid-tier price.
Think twice if…
- You have a broad or husky build — the slim, small-running cut means sizing up (or another brand).
- You want rugged playwear — the strength here is dressier shirts.
- You dislike sizing up — you’ll almost certainly need to here.
Skip the cross-referencing — let Little & Youth do it.
Enter your child’s measurements once. We’ll show their Calvin Klein Kids size and their size at 100+ other brands, each from that brand’s own chart.
Find my child’s size →Shop Calvin Klein Kids ↗A few things parents ask that the chart won’t tell you
Does Calvin Klein Kids run small?
Yes — across hundreds of ratings the dominant note is that the shirts run small and shoppers recommend sizing up. The cut is also slim, so a broad or average-build child should go up a size; slender children can often take their regular size.
Is Calvin Klein Kids cut slim?
Yes — the big-boys shirts are a slim fit that parents of slender children specifically like. Combined with running small, most families size up for anything but a lean build.
What measurements do I need to size Calvin Klein Kids accurately?
Calvin Klein Kids publishes height, weight, chest, waist, hip, inseam in its size chart. Height is the primary driver, and the chest/waist figures let you confirm body fit for a child between sizes.
Do Calvin Klein Kids boys’ and girls’ sizes fit the same?
From the bigger sizes up, Calvin Klein Kids publishes separate girls’ and boys’ charts, so the same number can differ by gender. The figures on this page use Calvin Klein Kids’ girls’/unisex chart.
Where do I buy Calvin Klein Kids?
Calvin Klein Kids is sold on its own site and on Amazon, so you can pick the marketplace you prefer.