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Sizes for Crochet Hats (Baby to Adult)

Head Sizing Chart Newborn to 2 years 

 Lisa Auch Crochet 


Head Circumference 

To Fit 

Newborn 

0-3 months

3-6 months 

6 months 

12 months 

2 Years 

Inches 

13.5 

14 inches

16

17

18

19

Centimeters

34

37

41

43

46

48

Crown Diameter 

Inches 

4.26

4.5

5

5.4

5.7

6

Centimeters

10.8

11.5

13

13.5

14.5

15.2

Length of Crochet to BASE of EAR 

Inches 

5

5.75

6

6.25

6.75

7

Centimeters

13

14.5

15

16

17

18

Back of Head - Ear to Ear( behind head) (NOT including ears)

Inches 

6

6.25

6.35

6.25

6.75

7

Centimeters

15

15.5

16

16

17

18

Forehead (ear to Ear Across Forehead - Do not include Ears) 

Inches 

6.25

6.75

7.25

8

8.5

9.5

Centimetres

16

17

18

20

22

24

JAW (Ear to Ear Underneath Chin (NOT including Ears)

Inches 

5.5

5.75

6.5

6.75

7.25

7.5

Centimeters

14

15.5

17

17

18

19

Ear to Shoulder (from middle of ear to top of Shoulder) 

Inches 

2

2.3

2.5

2.5

2.75

3

Centimeters

5

5.5

6

6

7

8

Mid Ear to CROWN (middle of ear to the Top of crown) 

Inches 

4.5

5

5.25

5.5

5.75

6.25

Centimeters

11

11.5

13

14

15

16



For Quick Reference when I am crocheting a HAT 

ALL Head Sizes for Crochet Hats 

When working on Crochet hats for babies, I generally like to follow these sizes guidelines and have found them to be invaluable, when making baby hats

Newborn-3 months
Head Circumference 13" - 15 "
Crown Width/ Diameter 3.75'' 
 Hat length  5''
___________________________________________
3- 6 months
Head Circumference 15-17 inches
Crown Width 4.5 inches''
 Hat length  5.5''
____________________________________________
 6 to 12 months
Head Circumference 16"  19 "
Crown Width  5''
Hat height  6.5'
____________________________________________

Toddler 12 months  (1yr) - 3 years
Hat height - 7"
Crown Width 5.75
Head Circumference: 18-20 "
____________________________________________

Child - 3 - 10 years
Hat height - 7.5"
Crown Width 6.25 inches''
Head Circumference:  19-21"
_____________________________________________

Teens /Small Adult/ Woman
Hat height 9-10"
Crown width 6.75
Head Circumference: 21''- 22"
_____________________________________________
____
Adult Man
Head Circumference: 23" - 24"

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