Step 2: Measure the String with a Ruler. If you don't own a hat, then try on a random hat next time you are visiting a shop that stocks hats. Step 3: Match the Circumference to the Hat Sizing Chart. The most commonly used sizing you will see here are SM, MD, LG, XL and occasionally 2 & 3X sizes. Medium/Large (M/L) Large/XL (L/XL) #N#Head Circumference. … The second most common sizing that we have on our site is that of half-sizes. Hat sizing comes in three general flavors. Not to worry -- the team at Fedoras.com will help you find yours in a jiffy, so you and your new hat can start your love affair as soon as possible.
Meaning there are usually only two sizes: SM/MD, and LG/XL.
What You'll Need Without Tool Step 1: Use a Piece of String to Measure Your Head. Hat Sizing Figuring out your ideal hat size can be a difficult task, especially when shopping online.
Another valid method to determine hat size is to try on a hat and check the size. Sizes, even though they do vary depending on the hat maker, are technically universal. One Size Fits Most.