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How do I Determine my Hat Size?

Diane Goettel
By
Updated May 21, 2024
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Finding one's hat size is a process of taking accurate measurements, considering the kind of hat that the measurements are for, and considering where the hat will be made. As with many other types of clothing and accessories, sizing charts vary from country to country. A hat size in the United States does not necessarily correspond to a hat size in the United Kingdom, even if the sizes are numerically identical. The best way to determine one's hat size is to find a sizing chart and sizing instructions distributed by a hat company that one plans to patronize. This is the best way to take accurate hat size as the information should also include specific instructions about how and where to measure the head.

For those who are interested in learning their hat size for more general purposes, there are basic measurements that can be taken. In order to take these measurements one will need a tape measure made of cloth or flexible plastic and, perhaps, a friend to help take the measurements. The circumference of the head should be measured at the widest part of the head. First, take the tape measure and measure 1 inch (about 2.5 cm) straight up from the arch of the eyebrows. This will determine the latitude on the head from which the circumference can be taken.

Have a friend measure this circumference two times. If the measurements differ, try a few more times until a dominant measurement presents itself. This is most likely the accurate measurement. In general, a circumference that is 21 inches (about 53 cm) is considered to be small. A person with this hat size will wear hats that are sizes small or extra small.

A circumference between 21 inches (about 53 cm) and 22 inches (about 56 cm) would also be considered small, but not extra small. A medium sized hat would fit a person with a head circumference between 22 inches (about 56 cm) and 22.5 inches (57 cm). A person with a head circumference between 22.5 inches (57 cm) and 23.5 inches (60 cm) would probably wear a large-sized hat. Those with head circumferences that exceed these measurements would have to wear hats that are sized as extra large and higher. Those who have especially large heads may have to have their hats custom made whereas those with more common hat sizes can usually purchase hats that have already been fabricated.

BeautyAnswered is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Diane Goettel
By Diane Goettel
"Diane Goettel has a BA from Sarah Lawrence College and an MA in English from Brooklyn College. Diane lives in Mount Vernon, New York with her husband, Noah. They are the proud parents of a Doberman Pinscher named Spoon. Specialties: book editing, book marketing, book publishing, freelance writing, magazine publishing, magazine writing, copywriting,"
Discussion Comments
By irontoenail — On Jun 20, 2014

I wonder if hat stores keep stockings on hand for your head the way shoe stores will often keep them for feet. It does seem rather gross to know that people will have tried on your hat multiple times before you buy it, but I'm not sure I'd want to get a hat without trying it on, even if it seemed on paper to be the right size.

By umbra21 — On Jun 19, 2014

@KoiwiGal - Even if the hat is adjustable, that might not be enough. When I was visiting Prague I discovered that one of the more popular souvenirs was Russian army hats and I had a friend who would love one, so I got him one. I tried to get one that would be adjustable, but even then it was too small and he basically just keeps it on display.

I think the best rule is to go as big as you can, if you aren't sure what size you need. It's always a lot easier to make something smaller than it is to make it bigger.

By KoiwiGal — On Jun 18, 2014

If you aren't sure and you aren't in a place where you can get proper measuring tape, then just pick a hat that will adjust to your size. If you're looking for one to keep the sun out of your eyes most baseball hats are going to be size adjustable. If you're looking for one that will keep your head warm, then most will be made from fairly stretchy materials.

Just remember that a lot of stores won't give you a refund on hats because of hygiene issues, so either make sure it's going to fit or make sure that they will take it back.

Diane Goettel
Diane Goettel
"Diane Goettel has a BA from Sarah Lawrence College and an MA in English from Brooklyn College. Diane lives in Mount...
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