The Ultimate Hat Sizing Guide (2024)

The Ultimate Hat Sizing Guide (1)

Creative and practical ways to determine your hat size at home.

You’ve looked high and low, and have finally picked out the perfect hat online. Now comes the tricky part: determining which size to buy. Most of us know our sizes and measurements for items like pants, shirts and shoes, and when in doubt, it’s generally easy enough to guess. But hat sizes can be another story entirely—and this is one personal item for which guessing generally just won’t cut it.

Here, we explore everything you need to know about hat sizing, including some of our favorite ways to find your perfect fit when trying on isn’t an option.

Simple—because heads come in so many sizes! And many shapes, too. Some people have heads that are generally round, while others have more of an elongated shape, which is often described as “long oval.”

Meanwhile, most head sizes fall within a common range, while others can fall on the extremely small or large ends of the size spectrum. With these factors combined, a simple hat purchase can quickly become a real head-scratcher if you’re not prepared.

Typically, adult hats will fall between 6 and ¾ on the small end, and 7 and ⅝ on the larger end. These sizes correspond to specific measurements of the circumference of your head, and depending on where you live, those measurements could be in either inches or centimeters.

Our hat size chart lays out these most common hat sizes and measurements, as well as how they correlate to our more standard sizing of Small (S) through Extra Large (XL).

The Ultimate Hat Sizing Guide (2)

For the most foolproof sizing, you can’t go wrong with a soft tape measure. But what if you don’t have one handy? You can also accomplish the same basic measurements by using a piece of string or twine, along with a standard ruler. Here’s how:

  1. First, wrap the tape measure or piece of string around the largest part of your head. As a general rule, this should be positioned about one half-inch above your eyebrows, across the mid-forehead and just above the ears. This is where your hat will ultimately rest.
  2. If using a tape measure, record the measurement in your choice of inches or centimeters. If you only have a piece of string, keep track of the precise point where the end meets the slack as you wrap it around your head—then measure that length against a standard ruler to determine the measurement.
  3. Once you’ve measured your head, map your chosen measurement to our hat size chart.
  4. If the measurement falls between two corresponding sizes, go with the larger 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).

Beyond these sizes, one option is to select a cap that’s listed as OSFM—meaning One Size Fits Most. These hats are made to suit a range of common Medium (M) and Large (L) measurements, and may incorporate features such as elastic banding that enable them to stretch or contract to fit a wide range of head sizes. With these hats, you can skip the measuring and the guesswork, and still take home a generally well-fitting hat in a snap.

Sometimes, you may not have access to a tape measure nor a piece of string when you need to figure out your hat size. In such cases, you could always compare your measurements to your favorite sized baseball cap, assuming you have one handy. (The sizing will typically be printed on a tag or directly on the inside of the cap.)

Alternatively, you could try on a friend or family member’s sized hat, and try to extrapolate whether you need a larger or smaller fit than theirs. If the borrowed hat is too large for you, see if adding one finger to the interior liner, against your forehead, helps the fit. One adult finger loosely correlates to 2 centimeters, which could help you gauge if you’re the next full size down. Granted, this method is very imprecise, so your best bet is always to try to measure.

The Ultimate Hat Sizing Guide (3)

The truth is, hat sizing is not an exact science. Every head is different, and even with the most accurate measurements, hat sizing can vary by hat style, material, or even in the presence of a liner or sweatband.

Thankfully, with Panama Jack, you have a number of options. If your head falls between sizes and your hat is a bit too roomy, we offer free “hat spacers” that can help you achieve just the right fit. And when in doubt, you can always contact us directly with your questions about sizing.

With these tips and hands-on support, you can take the guesswork out of choosing the right hat, and you’ll be sporting the perfect fit in no time at all.

The Ultimate Hat Sizing Guide (2024)

FAQs

Should you size up or down on hats? ›

Size up, Not Down

We recommend sizing up because you can always size your hat back down using our Hat Sizing Tape, which you can find on our website. It's important for a hat to fit securely, but there's a difference between a secure fit and a fit that leaves you uncomfortable.

How do I know what size hat to order? ›

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.

What size hat is L XL? ›

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. It will fit sizes from hat size 6 3/4 up to 7 5/8.

Is 21 inches a small head? ›

For example, if you found that your head measures 21 inches overall, then you would pick a hat size of small. You can use our convenient hat size chart below to see what your hat size will be.

Is it better for a hat to be tight or loose? ›

The sweatband inside the hat should provide a snug fit, not a tight fit. If you feel any tension or end up with deep red marks on your forehead, pick a looser-fitting hat. If you can fit one finger between your head and the cap then you know you have the right size.

Is it better to get a fitted hat bigger or smaller? ›

If you are not certain about size, or are between sizes, we suggest you buy the larger size. We carry several brands that have size adjusters inside the hat. We also carry terry cloth and cotton twill inserts that not only help you find the perfect fit, but protect your hat from sweat and oil from your skin and hair.

What is the average hat size for a man? ›

Tips for Choosing the Perfect Size

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).

What is the most popular hat size? ›

Head sizes and shapes differ from region to region. The most common male size is 7-3/8 and the average hat size for females is 7-1/4.

How do I know my hat size without measuring? ›

Wrap a length of string around your head.

Place 1 end of the string in the middle of your forehead, and wrap it around your head. You want the string to rest about 0.5 inches (1.3 cm) above your ears, right where you'd like the hat to sit on your forehead. This can also be done with a sewing tape measure.

Do fitted hats shrink over time? ›

Natural fibers in hats can cause gradual shrinking over time, especially if you ever have to wash it. Not to mention sweat, humidity, and weather all contribute to shrinking hat syndrome. But that doesn't mean if a hat is a little too snug you have to ditch it altogether and buy a new hat.

What size hat for a 23 inch head? ›

What size are you?
Head Size in InchesHead Size in CentimetersAmerican Hat Sizes
23"58.4 cm7-1/4
23 3/8"59.3 cm7-3/8
23 3/4"60.3 cm7-1/2
24 1/2"62.2 cm7-5/8
11 more rows

Does height affect head size? ›

There is no doubt that under normal nutritional and health conditions, body height, weight, and head circumference are significantly related. This is true for all ages and reflects the general proportionality in the human form (5).

What is the average male human head size? ›

According to Wikipedia, one study in the United States shows, the average adult head circumference to be 55cm (21 3⁄4 ) in females and 57cm (22 1⁄2 in) in males. Another study conducted in UK shows a slightly different result: with the average female head size being 55.2 cm and the average male head size being 57.2 cm.

What is normal head size for adults? ›

Adult
WomanMan
Circumference (in.)21–2322–24
(cm.)53–58.556–61

Do you round up or down for hat size? ›

Rounding Off: Hat sizes are rounded to the nearest whole centimetre. This standardisation simplifies finding the right hat size. Choosing Size: If your measurement falls between two sizes, round up to the larger size for the best fit. Opting for a slightly larger size can offer more comfort and adjustability.

Do hats shrink or stretch? ›

Some natural fibres like cotton can shrink after washing, and the hat could reduce its size over time because of sweat, humidity and weather. Therefore, the hat needs to be stretched to maintain its optimum shape and achieve a prolonged comfortable fit.

Should you size up or down for cowboy hats? ›

Your hat should sit about 1-2 fingers above your eyebrow and 1-2 fingers above your ear. We use a strong sweatband so our hats fit really well, but If it drops down over your ears or wobbles around that means it's too big.

How do you know if a hat is too big? ›

Too small, and your hat will sit awkwardly high on you head or feel uncomfortably tight. Too large, and it'll sit too low, with visible extra space around the edges—not the look you're going for.

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