FASHIONDISTRICT

Size reviews · Big kid

Brand Sizing Overview · Little & Youth

What is a size 6?How girls' and boys' size 6 compare across 38 kids' brands

A size 6 isn't the same size everywhere, and unlike the toddler sizes most brands cut it differently for girls and boys. Here is where all 38 brands on Little & Youth land, taken straight from each brand's own published size chart.

The short answer: Across the 38 brands on Little & Youth that publish a size 6, a typical girls' fit lands about 45–46½" tall and a typical boys' fit about 44–47". But the same "size 6" is used for children anywhere from 43 to 49½ inches tall depending on the brand, so the label alone cannot tell you the fit.

How far a size 6 drifts, brand to brand

One kid's height, 38 different ideas of 'size 6' — and most brands cut it differently for girls and boys.

Where each group of brands puts a girls' size 6

38 brands publish a girls' size 6. Every tick is a real inch, so a wider band really is a wider range.

Shorter-cut
43–46"
Typical
45–46½"
Longer-cut
45–49½"
43" 44" 45" 46" 47" 48" 49" 50"
Height (inches)

Where each group of brands puts a boys' size 6

38 brands publish a boys' size 6. Every tick is a real inch, so a wider band really is a wider range.

Shorter-cut
43–46"
Typical
44–47"
Longer-cut
45–49"
43" 44" 45" 46" 47" 48" 49"
Height (inches)

Is your child a size 6?

Enter their height and we’ll highlight every brand whose published size 6 covers it — then get their size at every brand.

in
lb
in

Which brands' size 6 runs shorter, typical, or longer

Grouped by where each brand's own published height range lands. The table below is the full roster.

4 brands cut their size 6 a little shorter

The whole range sits lower, so it fits a slightly shorter kid.

20 brands cut a typical size 6

They land in the most common range, about 45–46½".

14 brands cut their size 6 a little longer

The whole range sits higher, so it fits a taller kid.

Every size 6 on Little & Youth, by height

All 38 brands that publish a size 6, shortest-cut first — 11 chart girls and boys differently and show both, and 3 publish a single height rather than a range.

11 brands chart girls and boys differently

Size 6 height ranges across 38 kids' clothing brands (inches).
BrandSize 6 fits (height)How it runs
Converse Kids43–45"Shorter
Levi's Kids43–46"Shorter
JCPenney ThereaboutsGirls 44–46" · Boys 44–47"charts by genderShorter
Under Armour KidsGirls 44–46" · Boys 44–46½"charts by genderShorter
Gymboree44–46½"Typical
Tea Collection44–46½"Typical
The Children's Place44–46½"Typical
Calvin Klein Kids44–47"Typical
Primary44–47"Typical
Carter's44½–47"Typical
Little Planet by Carter's44½–47"Typical
OshKosh B'gosh44½–47"Typical
Otter Avenue44½–47"Typical
The North Face Kids44½–47"Typical
Puma Kids45–46"Typical
French ToastGirls 45–46½" · Boys 45–46"charts by genderTypical
Justice45–46½"Typical
Reebok KidsGirls 45–46½" · Boys 44–48"charts by genderTypical
Walmart Wonder NationGirls 45–46½" · Boys 45–47½"charts by genderTypical
Target Cat & Jack45–47"Typical
Macy's Epic Threads45–47½"Typical
Appaman45–48"Longer
Janie and Jack45–48"Longer
Kohl's Jumping Beans45–48"Longer
Kohl's SO45–48"Longer
Little Sleepies45–48"Longer
Fabletics45–49"Longer
Gap KidsGirls 45–49" · Boys 45–48"charts by genderLonger
Garnet Hill45–49"Longer
Old NavyGirls 45–49" · Boys 45–48"charts by genderLonger
Vineyard Vines KidsGirls 45–49" · Boys 45–48"charts by genderLonger
Brooks Brothers KidsGirls 45–49½" · Boys ≈45½"charts by genderLonger
H&M Kids≈46" (116 cm)Typical
Hatley≈45¾"Typical
Tommy Hilfiger KidsGirls 46–46½" · Boys 44–47"charts by genderTypical
Lands' End KidsGirls 46–48" · Boys 46–47"charts by genderLonger
Polo Ralph Lauren Kids46–48½"Longer
Eddie Bauer≈46½"Longer

Looking for a different size?

Kids move through these faster than anyone plans for. Each page is built the same way — every brand’s own published chart for that size.

All big kid sizes: size 5 · size 7 · size 8 · size 10 · size 12 · size 14 · size 16 · size 18 · size 20

Common questions about size 6 sizing

What age is a size 6 for?

A size 6 is designed with 6-year-olds in mind, but age is only a rough guide. Because it is built around height and build, plenty of children wear a size 6 a year earlier or later than the label suggests. Checking your child's height against a specific brand's chart is far more reliable than going by age alone.

What height is a size 6 for?

Most brands cut a girls' size 6 for about 45–46½" and a boys' size 6 for about 44–47", but across brands the label covers 43–49½" — that full span is the honest answer. Check your child's height against the brand you are buying.

Is a girls' size 6 the same as a boys' size 6?

Not always. Many brands publish one unisex size 6 that covers both, but 11 of the 38 brands here chart girls and boys separately — and where they do, the two can differ by an inch or more at the same number. The table above shows both, so you can compare the one that matches your child.

Does a size 6 run big or small?

Neither, reliably — a size 6 is not standardized. Across these 38 brands it covers heights from 43 to 49½", a spread of about 6½ inches, so "big" or "small" only means anything next to a named brand.

Is a size 6 the same at every brand?

No, and there is no industry standard that would make it so. Each brand sets its own size 6 height range, which is why the number cannot be carried from one brand to the next: the size that fits in one can be short or roomy in another under an identical label.

What size comes after size 6?

After a size 6, most brands move to a size 7. Sizing can shift noticeably at that step, so it is worth checking the next size's height range rather than assuming it picks up exactly where size 6 left off.

When should I size up from a size 6?

When your child's height is near the top of a brand's published size 6 range, check that brand's a size 7 before buying — the next size's range doesn't always pick up where size 6 ends. We can't predict how long a garment lasts, so we point you to the boundary, not a guess.

Which brand's size 6 runs the longest?

Among the brands here, Brooks Brothers Kids cuts the longest size 6, fitting up to about 49½ inches of height. That is about published height only — it says nothing about how long the garment itself lasts.

Stop guessing which size 6 fits. Let Little & Youth do it.

Enter your child's measurements once and Little & Youth shows the size to buy across all 100+ brands on the site — girls' or boys', size 6 or otherwise — each pulled from that brand's own published chart.

Find your child's size →
Their Measurements. Right Size. Brand by Brand.
How we know this is accurate. Every size 6 height range on this page is transcribed from that brand's own published US size chart — no estimates and no averaged-out "standard." Expand any row to see its source, the chart it came from and the date we captured it. Where a brand charts girls and boys differently we show both rather than merging them into one wider band, and where a brand publishes a single height we show one reference point rather than inventing a range. Brands update their charts, so confirm against the live chart before you buy. Little & Youth is independent and not affiliated with any brand listed. Figures verified 2026-09-04.