Top of Page
 
Main Content

NBA Hat Sizing Guide

Are you looking to upgrade your NBA fan gear with a brand new NBA hat but are unsure of which to buy? At NBAStore.com, we can help you pick out the perfect hat to fit your unique style. After you determine your hat size, browse hundreds of hats from adidas, '47 Brand, and more to cap off your fan gear!

Determining Your Hat Size

Choosing the right size fitted hat is an important yet simple process. Fitted hats require that you know your head size. You do not have to measure your head if you are buying an adjustable hat. To figure out your hat size, measure your head with a tape measure about a half-inch above your eyebrows where your hat will rest. If you don't have a tape measure, use a string and measure it against a ruler. If you are unsure or between sizes, buy the larger size. Use the charts below when choose your hat style.

adidas Hat Sizing

Men's Flex Sizing
Size Hat Size Circumference (in) Circumference (cm)
Youth 6 5/8 - 7 21 - 21 5/8 53 - 55
Adult S/M 7 - 7 1/4 22 1/8 - 23 56 - 58
Adult L/XL 7 3/8 - 7 5/8 23 3/8 - 24 59 - 61
Adult XL/XXL 7 3/4 - 8 24 1/2 - 25 1/8 62 - 64
Adult XXL/XXX: 8 1/8 - 8 3/8 25 5/8 - 26 3/8 65 - 67

Womens Flex Sizing
Womens S/M 6 5/8 - 7 21 - 21 5/8 53 - 55
Womens L/XL 7 - 7 1/4 22 1/8 - 23 56 - 58

Mitchell & Ness Sizing

Centimeters Inches Fitted Size Flexfit Adjustable Sized
54 21 1/4 6 3/4 S/M One Size
Fits All
S
55 21 5/8 6 7/8
56 22 7 M
57 22 3/8 7 1/8
58 22 3/4 7 1/4   L
59 23 1/8 7 3/8
60 23 1/2 7 1/2 L/XL XL
61 23 7/8 7 5/8  
62 24 1/4 7 3/4  
63 24 5/8 7 7/8    
64 25 8    
66 25 3/4 8 1/4    
68 26 1/2 8 1/2    

New Era Cap Sizing

Men's Sizing
Style Size Hat Size Circumference (in) Circumference (cm)
39Thirty Small - Medium 6 7/8 - 7 1/4 21 5/8 - 22 3/4 54.9 - 57.7
Medium - Large 7 1/4 - 7 5/8 22 3/4 - 23 7/8 57.7 - 60.6
Large - XLarge 7 5/8 - 8 23 7/8 - 25 60.6 - 63.5
29Twenty Small 7 1/4 22 3/4 57.7
Medium 7 3/8 23 1/8 58.7
Large 7 1/2 23 1/2 59.6
XLarge 7 5/8 23 7/8 60.6
9Twenty / 9Forty One Size 7 - 7 5/8 22 - 23 7/8 55.8 - 60.6
Knit One Size 7 - 7 3/4 22 - 24 1/4 55.8 - 61.5

Kids' Sizing
Style Size Hat Size Circumference (in) Circumference (cm)
39Thirty Child / Youth 6 1/2 - 6 7/8 20 1/2 - 21 5/8 52 - 54.9
29Twenty One Size Fits Most 6 3/8 - 6 7/8 20 1/2 - 21 5/8 51.1 - 54.9