Now that you’re addicted to knitting and crochet, you’ll likely make many hats! Getting a hat sized just right is tough sometimes, especially if you’re making the hat as a gift. I’ve found these measurements to be quite true to size but of course there is always the chance of slight variation.

Refer to this handy hat sizing chart the next time you are asked to crochet a hat for a friend, family member or your shop!

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Size: Preemie
Circumference: 11-12″
Recommended Hat Circumference: 10″
Hat Length: 4″
Crown Diameter (increase to this diameter): 3.24″
Size: Newborn
Circumference: 13-15″
Recommended Hat Circumference: 13″
Hat Length: 5″
Crown Diameter (increase to this diameter): 3.75″
Size: 3-6 months
Circumference: 15-17″
Recommended Hat Circumference: 14″
Hat Length: 5.5″
Crown Diameter (increase to this diameter): 4.5″
Size: 6-12 months
Circumference: 16-19″
Recommended Hat Circumference: 16″
Hat Length: 6.5″
Crown Diameter (increase to this diameter): 5″
Size: Toddler (1-3 years old)
Circumference: 18-20″
Recommended Hat Circumference: 18″
Hat Length: 7″
Crown Diameter (increase to this diameter): 5.75″
Size: Child (3-10 years old)
Circumference: 19-21″
Recommended Hat Circumference: 20″
Hat Length: 7.5″
Crown Diameter (increase to this diameter): 6.25″
Size: Teen/Adult Small
Circumference: 21-22″
Recommended Hat Circumference: 21″
Hat Length: 8″
Crown Diameter (increase to this diameter): 6.75″
Size: Mens/Adult Large
Circumference: 23-24″
Recommended Hat Circumference: 23″
Hat Length: 8.5″
Crown Diameter (increase to this diameter): 7.25″

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Need help customizing the size of your hat?

Check out my guide to sizing a hat that fits every time!

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