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How to measure for a man's hat size

Updated April 17, 2017

Hats are an important accessory in any man’s wardrobe. They complete an outfit and have practical purposes. You can wear a baseball cap to support your favourite team, a fedora to stay warm and look fashionable in winter or a summer hat to shade yourself from the sun. Before you shop for hats, you must determine your exact hat size. Buying the correct-sized hat will ensure a comfortable fit and avoid unsightly hat marks on your head.

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  1. Stand in front of a mirror and place the end of the measuring tape on the middle of your forehead, above your nose.

  2. Wrap the tape around the back of your head, making sure to place the tape across the wide part of the back of your head and 1/8 of an inch above your ear. Then bring the tape to the middle of your forehead to meet the other end.

  3. Determine the measurement by looking at the measuring tape in the mirror.

  4. Measure your head several times to avoid error, and then write down the head measurement.

  5. Compare your head measurement to the sizing chart (see Tips) to determine what hat size you wear.

  6. Tip

    Head Measurement in Inches = Hat Size: 21 1/8 = 6 ¾ (S); 21 1/2 = 6 7/8 (S); 21 7/8 = 7 (M); 22 1/4 = 7 1/8 (M); 22 5/8 = 7 ¼ (L); 23 = 7 3/8 (L); 23 1/2 = 7 ½ (XL); 23 7/8 = 7 5/8 (XL); 24 1/4 = 7 ¾ (XXL); 24 5/8 = 7 7/8 (XXL). If your head measurement does not correspond with the sizing chart, it is customary to round your head measurement up a quarter of an inch.


    When measuring your head, do not wrap the measuring tape too tight. If the tape is too tight, your hat will also be too tight.

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Things You'll Need

  • Cloth measuring tape

About the Author

Chris Winston has been writing since 2005. She is an attorney in Florida and has written on numerous legal topics during her career, with her work appearing on various websites. She holds a Bachelor of Arts in English and a law degree.

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