How to Measure Hat Size for Kids: Age & Head Size Chart

Key Takeaways

• Measure the child's actual head circumference instead of relying only on age.
• Keep the measuring tape level above the eyebrows and ears and around the fullest part of the head.
• Centimeters are especially useful because many children's hat listings use cm measurements.
• Treat age-based hat charts as approximate references rather than universal standards.
• Fitted hats require a closer circumference match than adjustable hats.
• Twenty inches equals exactly 50.8 cm.
• A 52 cm or 54 cm hat should not automatically be assigned to one exact age.
• Retailers benefit from products that state measurable size ranges instead of only vague labels such as "kids" or "youth."

How to Measure a Child's Head for a Hat

The most useful measurement is the circumference where the hat will actually sit.

Nike's kids' hat size chart instructs shoppers to measure around the head at the normal hat position, roughly 1 inch or 2.5 cm above the eyebrows.

New Era's cap size guide follows the same general principle: measure above the eyebrows and ears and around the widest part of the back of the head.

A flexible sewing tape is the easiest tool. If one is not available, a non-stretch string can be wrapped around the head and then measured with a ruler.

The tape should stay level from front to back. It should touch the head without being pulled tight enough to compress the hair or skin.

Record the result in centimeters and, if useful, inches. Then measure again. New Era recommends taking the measurement twice and using the larger reliable result when the readings differ.

That extra check is particularly useful for fitted hats because a difference of one or two centimeters can meaningfully change the fit.

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Why Head Circumference Matters More Than Age

Age helps narrow the search, but it cannot determine a child's hat size by itself.

Two children of the same age can have different head circumferences. A product labeled "6 years" may therefore fit one child well and another poorly.

This problem also appears in real user discussions. Parents and makers have complained about children's products and patterns that provide only labels such as toddler or child without an actual circumference. Those discussions are anecdotal rather than scientific evidence, but they illustrate why shoppers often want a measurable number instead of an age label alone.

The safest approach is to treat actual head circumference as the main measurement, the product or manufacturer's size information as the matching tool, and age as a supporting reference.

Generic labels such as XS, S, M, L, child, or youth should also be interpreted through the specific brand. They are not guaranteed to represent the same circumference everywhere.

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Kids Hat Size Chart: Age Is a Reference, Not a Rule

A useful kids' hat chart should show what a measurement means without pretending that every child of a certain age has the same head size.

The examples below come from currently verified brand, retailer, and product information. They are not a universal children's sizing standard.

The overlap between 52 cm and 54 cm is especially important. Both can appear in the same broad age range on one reference chart even though they are physically different sizes.

That is why the final choice should come from the child's measured head and the specific hat, not from age alone.

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What Is 20 Inches in Hat Size?

Twenty inches equals exactly 50.8 cm.

The conversion is based on the standard relationship published by NIST:

If a child's head measures 20 inches but the hat listing uses centimeters, compare the product with approximately 50.8 cm.

Do not automatically convert 50.8 cm into a universal small, medium, or large size because those labels depend on the brand or product.

A listing that gives a measurable range such as 50–52 cm provides more useful sizing information than one that simply says "kids medium."

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What Age Is a 52 cm Hat For?

A 52 cm hat can fall within the range used for many children's hats, but it does not correspond to one exact age.

Hatshopping's current reference chart places 52 cm at approximately ages 4–8. That is useful as a rough age guide, but it should not override an actual measurement.

AccsWholesale currently has a 52 cm kids bucket hat, SKU ACC-KH-HeiYang001.

If a child's measured head is close to 52 cm, that physical specification is more useful than asking whether the child is exactly 5, 6, 7, or 8 years old.

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What Age Is a 54 cm Hat For?

A 54 cm hat also cannot be assigned to one exact age.

Hatshopping places 54 cm in the same approximate 4–8-year reference range as 52 cm. That does not mean the two sizes are interchangeable. It shows why broad age categories should be treated cautiously.

AccsWholesale's multi-size kids bucket hat, SKU ACC-KH-TuYu001, is available in 50, 52, and 54 size options.

Another product, ACC-KH-TuYu002, lists a 54 cm adjustable specification.

These examples show why size information should be read together with the hat construction. A measurable size plus an adjustable closure gives the buyer more information than an age label alone.

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What Size Hat Does a 5-, 6-, or 7-Year-Old Need?

The answer should begin with measurement.

A 5-year-old, 6-year-old, and 7-year-old may appear within similar age-based sizing categories, but their actual head circumferences can differ.

If one 6-year-old measures 51 cm and another measures 53 cm, the best product choice may be different even though both children are the same age.

The same principle applies to questions such as "What size cap for a 6-year-old?" or "What size fitted hat does a 7-year-old need?"

Age helps identify a likely starting range. Circumference is what allows the buyer to compare that child with the actual product.

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What Size Head Is a 10-Year-Old?

There is no single head circumference that applies to every 10-year-old.

Some brands may place that age within a youth category, while other brands use a different age or circumference system.

New Era is a useful example because its children's adjustable hats use Infant, Toddler, Child, and Youth categories, while its fitted children's hats use numerical fitted sizes tied to circumference.

If the child can be measured, that circumference should be used instead of estimating a size from age.

If the child cannot be measured, an age range may help identify where to begin, but the product's own size information still needs to be checked before purchase.

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How to Measure Baseball Hat Size for Kids

Measure a child's head for a baseball cap at the position where the cap's sweatband will sit.

The measurement method is similar across many hat types. What changes is how much flexibility the hat provides after that measurement is known.

A fitted baseball cap depends heavily on circumference. An adjustable cap can cover a wider range, while a stretch-fit cap can accommodate multiple circumferences through its stretch band.

Before choosing a baseball cap, check which construction is being sold and compare the child's measured circumference with that sizing system.

AccsWholesale currently lists a 52–54 cm children's baseball cap, SKU ACC-KH-WoBang003.

Its current verified product information lists a 52–54 cm size range, cotton material, 100 g weight, MOQ 1, and a price of $4.70.

The measurable 52–54 cm range gives a buyer more useful fit information than the phrase "children's baseball cap" alone.

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How to Measure Fitted Hat Size for Kids

Fitted hats need the closest circumference match because there is no rear strap or buckle to correct a poor size choice.

New Era's current children's fitted 59FIFTY range provides a useful brand-specific example. Its kids fitted range covers approximately 48.2 cm through 53.9 cm across multiple fitted sizes.

That range should not be copied to every brand. It demonstrates how detailed fitted sizing can be when compared with a broad label such as child or youth.

Measure the child's head where the cap will sit and repeat the measurement. Then compare that number with the exact fitted chart for the brand being purchased.

If two measurements differ, use the larger reliable reading rather than choosing a smaller size from an uncertain measurement.

If the child falls between sizes, follow the specific manufacturer's guidance because fitted constructions can vary.

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Adjustable and Stretch-Fit Kids' Hats

Adjustable hats give shoppers more flexibility, but the underlying size still matters.

Snapbacks, hook-and-loop closures, straps, and buckles can allow one hat to fit more than one circumference. Stretch-fit designs can cover a range through an elastic or stretch component.

New Era's current sizing guide demonstrates this difference directly by separating fitted, adjustable, and stretch-fit systems.

For buyers, the important question is not simply whether a hat is adjustable. It is whether the base product was designed for an appropriate kids or youth range and whether the listed sizing provides enough information to compare with the child's head.

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Bucket Hats and Sun Hats Still Need Accurate Sizing

Baseball caps are not the only children's hats where circumference matters.

Bucket hats, fisherman hats, and sun hats may have less adjustment than a rear-closure cap, making the stated size range especially useful.

AccsWholesale's ACC-KH-DaQi002 baby sun hat lists a 46–51 cm size range, MOQ 1, a weight of 150 g, and a current price of $6.72.

The ACC-KH-JingHong006 children's fisherman hat gives both an age description and a measurable range: the product title specifies ages 1–3 while the size is listed as 50–51 cm.

That pairing shows how age and circumference can work together.

The age label gives a quick category. The circumference gives the buyer a number that can be compared with the actual child.

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Common Kids' Hat Sizing Mistakes

Choosing only by age is one of the easiest mistakes to make.

Another is assuming that child, youth, small, medium, and large represent the same physical measurements across different brands.

Unit confusion can also create serious errors. A 50 cm head is not a 50-inch head. User discussions about children's hat sizing and patterns still show that shoppers can confuse centimeters, inches, and broad size labels when product information is unclear.

Another mistake is ignoring construction. A fitted 52 cm cap and an adjustable product covering approximately 52–54 cm should not automatically be treated as equivalent.

Buyers should also avoid turning an approximate age range into a fixed rule. If one chart says approximately ages 4–8, that does not mean every child within that range needs the same circumference.

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How to Compare Kids' Hat Listings

The strongest listings make the product's sizing understandable before purchase.

For a parent, that means being able to compare the child's measured head with a real number.

For a retailer, detailed sizing also makes assortment planning and customer questions easier.

Useful product information includes actual circumference or a measurable range, the type of fit or closure, age guidance where relevant, material, MOQ, price, and clearly separated size variants.

A vague "kids hat" label tells the buyer much less than "52–54 cm adjustable kids cap."

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Real Kids' Hat Size Examples From AccsWholesale

The wholesale kids hats collection shows several different ways children's hats can be sized.

These examples should not be combined into a universal AccsWholesale age chart.

They demonstrate something more useful: individual children's products can use a single circumference, a range, several selectable sizes, an adjustable size, or a combination of age and physical measurement.

For a retailer, those distinctions matter when choosing which sizes to test.

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How Small Retailers Can Plan Kids' Hat Sizes

A parent usually needs one hat for one child. A retailer has to serve multiple head sizes without putting too much inventory into the wrong range.

Low-MOQ purchasing can reduce that risk because a retailer can test several size ranges or constructions before increasing order depth.

Faire's August 2026 platform buying guide reports that its broader Hats, Gloves & Scarves catalog contains more than 2,000 brands and more than 17,000 products. Within Kids' Hats, Faire reports more than 3,200 products from more than 400 brands.

Faire also reports that MOQs on its platform often begin at one unit, although most brands have first-order minimums in the $85–$200 range.

Those figures describe Faire's marketplace rather than the children's hat market as a whole. They nevertheless show how broad assortment and smaller initial quantities can support inventory testing.

A retailer could test different measurable size ranges and fit structures rather than buying deeply into one generic "kids" size. Sales results can then guide later replenishment.

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Where Can Small Retailers Buy Kids' Hats Wholesale?

Small retailers have several sourcing routes, and the differences matter more than simply comparing the lowest unit price.

AccsWholesale

AccsWholesale is relevant when a small retailer wants product-level size specifications and low SKU-level quantities.

Several verified products in its kids' hat assortment currently list MOQ 1 while also providing measurable ranges such as 46–51 cm, 50–51 cm, 52 cm, 52–54 cm, or separate 50/52/54 options.

Retailers researching baseball caps more broadly can use the separate guide on where to buy baseball caps rather than treating kids' sizing information as a complete baseball-cap sourcing guide.

Faire

Faire wholesale kids hats provides a marketplace rather than a single-supplier catalog.

Its strength is breadth. Faire's 2026 platform data reports more than 3,200 Kids' Hats products from more than 400 brands, and the platform says MOQs often begin at one unit.

Individual brands can still have different first-order minimums, sizing systems, and product specifications, so retailers need to compare individual listings rather than assuming one marketplace-wide standard.

Katydid Wholesale

Katydid Wholesale kids hats is a B2B source aimed at retailers.

Its current site requires a valid Tax ID and lists a $50 minimum order amount. It also states that orders ship daily from Texas.

That creates a different buying route from both an open marketplace and a supplier focused on single-SKU MOQ 1 ordering.

Foremost Hat

Foremost Hat kids hats provides a specialist hat-wholesale option and currently advertises no MOQ.

Its own taxonomy describes Kids as approximately ages 4–7 and Youth as ages 8–14, and many of its children's styles use adjustable closures.

Those age ranges belong to Foremost's own product system and should not be treated as a universal sizing standard.

Joe's USA

Joe's USA provides useful age-specific examples through its 1010 Hats toddler range.

Its toddler style is labeled for ages 1–3, while the matching youth version is labeled for ages 4–8. The verified pages showed a price of $11.90 and no minimum order requirement.

At the time those pages were reviewed, the selected toddler and youth variants showed unavailable or backordered status. Retailers should therefore confirm current availability before relying on those exact products for inventory planning.

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What Retailers Should Compare Beyond MOQ

MOQ is useful, but it should not be the only filter.

A low minimum provides little sizing advantage if the listing gives no meaningful information about fit.

For kids' hats, circumference or measurable size range should be compared alongside closure type, age guidance, available variants, material, price, and order minimum.

A retailer may prefer a broad marketplace for assortment discovery, a specialist hat wholesaler for focused category selection, or a low-MOQ supplier when testing specific size ranges.

The strongest sourcing choice is the one that fits the retailer's inventory model while still giving customers enough sizing information to make a confident purchase.

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FAQ

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Final Answer

To measure hat size for kids, measure the child's real head circumference where the hat will sit and use that number as the main sizing reference.

Age charts can help narrow the range, but they should not override actual measurement. A 52 cm or 54 cm hat cannot be assigned to one exact age across every brand, and a 6- or 7-year-old should not be given a fitted cap size without first checking the head circumference.

Hat construction matters as well. Fitted hats need a closer circumference match, while adjustable and stretch-fit hats provide more flexibility.

For retailers, the same principle improves buying decisions. Products with clear centimeter or inch measurements are easier to compare and explain than products labeled only "kids" or "youth."

Measure first, use age as a reference, and let the specific product's verified size information guide the final choice.

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Compare Kids' Hats With Clear Size Information

Browse children's baseball caps, bucket hats and sun hats with current product-level size information for small-order testing.