International hat size chart | Guide | Measuring tips (2024)

FAQs

How do I guess my hat size? ›

To get your size, measure comfortably around your head where your cap will sit, with a tape measure. Take that number in inches, divide by 3.14 (pi) and round up to the nearest eighth. This is your cap size. See the chart for size conversions.

Keep in mind that head shapes and sizes differ among hat lovers. However, the hat size that men most commonly wear is 7 ⅜. Meanwhile, the average cap size for women is 7 ¼. Make sure that there's some space between your head and the hat (about the width of your finger).

Take the circumference of your head in inches, then divide that number by pi and you've got your hat size. According to deGrasse Tyson your hat size is the diameter of your head in inches if your head were a perfect circle.

If you don't have a measuring tape, a piece of string, knitting yarn, or even dental floss can work in a pinch. First, wrap the string around your head, starting and ending at one point. Then measure the length of string using a tape measure or ruler.

For example, if you found that your head measures 22 inches overall, then you would pick a hat size of medium or fitted size of 7 to 7 1/8" circumference. You can use our convenient hat size chart below to see what your hat size will be. These sizes range from S or 21 1/4" to XXL or 25" in circumference.

What is considered an XL (X-Large) head? Someone with an XL head size measures at about 61cm, or 24” in circumference. Xl is the most common hat size for those who find “normal” hats too tight.

For example, if you found that your head measures 21 inches overall, then you would pick a hat size of small.

Is there a “standard” hat size? Generally, no—but there are a few sizes that tend to be common. For men, the average head size is right around 23 and ¼ inches, which corresponds to a Large (L), while for women, the average size is around 22 and ⅜ inches, or a size Medium (M).

What is the most worn hat in the world? ›

The Baseball Cap. Undeniably, the most popular hat in the world today, the baseball cap, is, as its name suggests, a product of American baseball. In 1860, the forerunner to the baseball cap was born and was worn by the Brooklyn Excelsiors baseball team.

Odilon Ozare was crowned by the Guinness Book of Records as the creator of the world's tallest hat. The stovepipe behemoth is 4.8m tall.

To measure your head circumference, take a sewing measuring tape or even a string, and wrap around above the ears and across your eyebrows. Please stick your finger under the tape so there is a little room and there you have head circumference! If you fall between measurements go for the next size up.

Sizes, even though they do vary depending on the hat maker, are technically universal. You may refer to the sizing chart above to convert a medium to an actual hat size. SIZING TIPS: Small is usually 55cm, the medium is typically 57cm, Large is generally 59cm, and X-Large is usually 61cm.

So a S/M hat would fit heads with measurements of 21 inches to 22 1/2 inches, or hat sizes 6 3/4 to 7 1/8. A L/XL (Large through Extra Large) hat would fit measurements just over 22 1/2 up to 24 inches, or hat size 7 1/4 to 7 5/8.

So a S/M hat would fit heads with measurements of 21 inches to 22 1/2 inches, or hat sizes 6 3/4 to 7 1/8. A L/XL (Large through Extra Large) hat would fit measurements just over 22 1/2 up to 24 inches, or hat size 7 1/4 to 7 5/8. If a hat does not list sizes, it is a 'one-size-fits-most' hat.

What size head does an XL hat fit? Up to 61cm, or 24” circumference.

Hats like beanies, bucket hats, snapback hats, and strap-back hats (aka dad hats) are often listed as “One Size Fits Most (or All)” since they are stretchy or have an adjustable strap to help secure the fit. Fitted baseball caps without a back strap are more dependent on your head size to fit properly.