Hat Size Calculator
Convert head circumference to hat sizes across US, UK, and international sizing charts for adults and children. Find your perfect hat size.
What Size Hat Am I?
Finding the right hat size is essential for comfort and style. A hat that is too tight can cause headaches, while one that is too loose will not stay in place. Our hat size calculator helps you determine your correct hat size by converting your head circumference to US, UK, and international sizing standards.
Simply measure the circumference of your head and enter it into the calculator. We support both inches and centimeters, and provide separate sizing charts for adults and children.
How to Measure Your Head for a Hat
- Take a flexible measuring tape.
- Find the part that protrudes most at the back of your head.
- Connect it to the most protruding part of your forehead, leaving about 0.4-0.8 inches (1-2 cm) above your ears.
- Complete the circumference measurement and note the result.
If your measurement falls between two sizes, it is recommended to choose the larger size since it can be adjusted for a better fit.
Frequently Asked Questions
What hat size is 23 inches?
A head circumference of 23 inches corresponds to size L, which is US size 7 3/8 or UK size 7 1/4 according to the adult hat size chart.
What hat size is a large?
A large hat size typically fits head circumferences of 22.8 to 23.2 inches (58-59 cm). In US sizing, this is 7 1/4 to 7 3/8, and in UK sizing it is 7 1/8 to 7 1/4.
What is a 24 inch hat size?
A 24 inch head circumference corresponds to US size 7 5/8 (XL) and UK size 7 1/2 (XL) in the adult hat size chart. In international sizing this is considered XL.
What if my head circumference falls between two hat sizes?
If your measurement falls between two sizes, it is recommended to choose the larger size. A larger hat can be modified with padding or a hat sizer for a better fit, while a hat that is too small cannot be stretched enough.
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