How To Properly Size Crochet Hats With Crochet Hat Size Chart 
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How To Properly Size Crochet Hats With Crochet Hat Size Chart



Getting a crochet hat to fit properly without a model is not always easy. I have put together a crochet hat size chart to help you properly size your crochet hat. I basically use this chart in sizing all my crochet hat patterns.


Crochet Hat Size Chart

Preemie: 1 – 2 Pounds
Head Circumference: 9 - 10"
Hat Circumference: 7.5 - 8 "
Crown Circle Diameter: 1.5 - 2"
Hat Height: 3 - 3.5"
 
Preemie: 2-3 Pounds
Head Circumference: 10 - 11"
Hat Circumference: 8.5 - 10 "
Crown Circle Diameter: 2 - 2.5"
Hat Height: 3.5"
 
Preemie: 4 - 5 Pounds
Head Circumference: 11.5 - 12"
Hat Circumference: 9 - 10 "
Crown Circle Diameter: 2.5 - 3"
Hat Height: 4"
 
Preemie: 5.5 - 6 Pounds
Head Circumference: 12 - 13"
Hat Circumference: 10 - 11 "
Crown Circle Diameter: 3 - 3.5"
Hat Height: 5"
 
Newborn
Head Circumference: 13"
Hat Circumference: 12 - 12.5 "
Crown Circle Diameter: 3.5 - 4"
Hat Height: 6"
 
Baby: 2 weeks - 3 months
Head Circumference: 14"
Hat Circumference: 13 - 13.5 "
Crown Circle Diameter: 4.5 - 5"
Hat Height: 6"
 
Baby: 3 - 6 months
Head Circumference: 15"
Hat Circumference: 14 - 14.5 "
Crown Circle Diameter: 5"
Hat Height: 6"
 
Baby: 6 - 9 months
Head Circumference: 16"
Hat Circumference: 15 "
Crown Circle Diameter: 5"
Hat Height: 6.5"
 
Baby: 9 - 12 months
Head Circumference: 16.5"
Hat Circumference: 15.5 "
Crown Circle Diameter: 5.5"
Hat Height: 6.5"
 
Baby: 12 - 18 months
Head Circumference: 17"
Hat Circumference: 16 "
Crown Circle Diameter: 5.5"
Hat Height: 7"
 
Toddler: 18 - 24 months
Head Circumference: 18"
Hat Circumference: 17 "
Crown Circle Diameter: 6"
Hat Height: 7"
 
Toddler: 2 - 5 years
Head Circumference: 18 - 19"
Hat Circumference: 17 - 18 "
Crown Circle Diameter: 6"
Hat Height: 7.5"
 
Child
Head Circumference: 19 - 20"
Hat Circumference: 18 - 19"
Crown Circle Diameter: 6.5"
Hat Height: 8"
 
Teen
Head Circumference: 20 - 21"
Hat Circumference: 19 - 20"
Crown Circle Diameter: 6.5"
Hat Height: 8"
 
Adult Woman
Head Circumference: 22"
Hat Circumference: 21"
Crown Circle Diameter: 7 - 7.5"
Hat Height: 9"
 
Adult Man
Head Circumference: 23"
Hat Circumference: 22"
Crown Circle Diameter: 8"
Hat Height: 9.5"

Formulas I Use For Sizing My Crochet Hat Patterns

Crown circle diameter, I take the head circumference and divide by 3.14.

Crochet hat height, I take the head circumference and divide by 10, and multiply by 4.

I generally round my numbers off to the nearest half inch.

Hats are generally made about an inch smaller in circumference than the circumference of the head. This keeps the hat fitting snug and from falling off. Most crochet hats have about an inch of stretch to them.


Happy crocheting!


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