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Learn How to Measure Your Head and Determine Your Hat Size

Follow these steps to learn how to measure your head and find your hat size. Then use the hat size chart below to determine your hat size. We know hats only look stylish when they fit your head properly. There's nothing worse than a hat that slips down or fits too tighlty. That's why it is so important to find the right hat size before you shop. Our handy hat size chart and conversion table will show you exactly how to measure your head to find the perfect fit. It is easy to do, and ensures a perfect fit so you look your best in your new hat.

How to size for a hatTo measure hat size, take a string and wrap it around your head. Measure the distance with a ruler. Then use the hat size chart below to perform a size conversion.

Steps to Measure Hat Size

Follow these steps to determine your hat size and get the perfect fit. The correct fitting hat makes you look your aboslute best.

  1. Wrap a string around the back of your head approximately 1/8" above your ears. Meet the two ends at the center of your forehead just above your eyebrows as shown in the diagram. The string should be comfortably wrapped around your forehead, not too tight and not too loose.

  2. Take the string from around your head and lay it on the ruler. Measure the distance rounding the measurement up to the nearest 1/8".

  3. Compare the measurement to the hat size chart below and use the conversion to find the corresponding hat size.

For example, we measured 22 inches. Using the hat size chart, we can see our general hat size is Medium and the fitted size is 7 – 7 1/8.

Please Note: Not all hats will fit the same. Hat sizing is not a perfect science. Many factors affect the fit of a hat such as manufacturer, material and even your hairstyle. This chart is a helpful guide and an approximation of size.

There are different types of hat sizes. Fitted hat or specific sizes use numbers like 7 – 7 1/8. General hat sizes use words; Small, Medium, Large and X-Large. Match yours to the type of hat you plan to buy.

When buying a hat keep in mind that different manufacturers have slightly different types of crowns, and you may want to buy hats slightly larger depending on how you will wear them.

Information for first time hat buyers:

Hat Size Chart

Use this hat size chart to find your perfect fit. It includes conversions to numeric or specific fitted hat sizes and general hat sizes. Keep in mind, different hat manufacturers may size their hats differently.

Head Circumference
Adult Hat Size
Inches Centimeters
Easy Fit
Sized Stretch Fit
Stretch Fit/Adjustable
21 1/4546 3/4 Small (S) Small/Medium (S/M)  
21 5/8556 7/8  
2255.97Medium (M)
One Size Fits Most
22 3/856.87-1/8Medium/Large (M/L)
22 3/457.87-1/4Large (L)
23 1/858.77 3/8
23 1/259.77 1/2XLLarge/XL (L/XL)
23 7/860.67 5/8 
24 1/461.67 3/4XXL
24 5/862.57 7/8 

Finding the right sized hat is the first step to enhancing your style with a brand new stylish hat! Now, that you know what size hat you need, take a look at our wide selection of designer men's hats and womens hats. Or, shop by style we feature fedora hats, flat caps and newsboys, boater hats, trilby and straw hats plus more.