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Hat size charts

I know this has probably been covered, but I thought we should have a thread for discussion of size charts. Look around the interwebs and you'll find numerous different size charts, each claiming different inch measurements corresponding to hat sizes. Is there a definitive one? Or is there definitive information? If so, what makes it definitive? Do these charts on the internet list sweatband sizes, or measured head sizes?

This is my favourite. Apparently US hatters are like the rabbits in Watership down. Can't count above 7: The country of one size fits all!

hat-sizes-chart.gif
 

viclip

Practically Family
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567
Location
Canada
The US sizes 6 & 7 in the chart are clearly erroneous & need to be corrected. I hope that someone new to hats doesn't rely on those numbers to his detriment.
 

The Wiser Hatter

I'll Lock Up
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4,764
Location
Louisville, Ky
This chart is off I am a 7 3/8 and where a 59 metric sized hat not a 60. To get one's true size you need to be fitted with a conformer. Numbers are based on a fully round head and no ones head is a perfectly round head.
 

rlk

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6,100
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Evanston, IL
UK 7-3/8 is 60.

Circumference is the same on a given size regardless of oval shape. This doesn't mean all manufacturers agree on the size. I always thought Resistols ran larger--I was right.

SCAN0541.JPG
 

Simonds

Vendor
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853
Location
Atlanta
Great thread! The hat sizing charts IMO are based on each makers preferences. The true formula is: Circumference divided by 3.14, Although, depending on type of headwear felt hat/cap this will change from maker to maker to allow room for the weights and thicknesses of materials used in their hats/caps. Such as sweatband materials, hems, etc.. So it is up to the maker to determine what they should add to the true size in order for a proper fit. So it's very important to know your exact circumference.
 

viclip

Practically Family
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567
Location
Canada
I wonder whether the manufacturers take into account hair style. My current Yul Brynner look is probably a full size smaller vs. when I was a young buck sporting my infamous Duck Tail.
 
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16,379
Location
Maryland
I have a couple old JHS stiff felts that have 1/4 (French) Point sizing (for example: Point 6 1/4).

Robert, Have you seen this elsewhere?
 
Last edited:
Messages
14,721
Location
Buffalo, NY
UK 7-3/8 is 60.

Circumference is the same on a given size regardless of oval shape. This doesn't mean all manufacturers agree on the size. I always thought Resistols ran larger--I was right.

What does the last column measurement correspond to, Robert?... perimeter of the crown from the outside? Or the inside of the hat body before finishing?
 

rlk

I'll Lock Up
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6,100
Location
Evanston, IL
I believe the outside of the crown. This column is near standard on most of these Hatter's Rules.

Some devices also measure the interior of a finished hat body--without the sweatband-- and will read one size off approximately.
 

ManofKent

My Mail is Forwarded Here
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3,039
Location
United Kingdom
Typically UK sizes are a size smaller than US sizes for the same circumference e.g. a 60cm hat is a 7 3/8 UK and a 7 1/2 US but there's an awful lot of variation between one companies sizing and another. I think some companies allow for a degree of shrinkage when worn, and others don't. German hats seem quite generous for their stated metric size.
 

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