Hats and Heads

Since I am always making hats of all types, when I came across this I knew I needed to hang on to it. This way I can also know what size to make American Girl Doll hats.
Preemies

1 -2 lbs 1kg
Baby's Head Circumference is 9" - 10" 23-25 cm (so hat circ. should be about 7.5" -8" 18-20 cm) Height of hat should be 3.5 - 4" 10cm

2 - 3 lbs 1.4 kg
Head Circumference 10" - 11 1/4" 25-28 cm hat circ = 8.5" - 10" 22-25 cm Hat height = 4" 10 cm

4 - 5 lbs 2 kg
Head Circumference 11 1/2" - 12 1/2" 28-33 cm hat circ = 9" - 11.5" 23-28 cm Hat height = 4 to 4.5" 10-11cm

5 1/2 - 6 lbs 2.7 kg
Head Circumference 12 1/2" - 13" 31-33 cm hat circ = 11" - 12" 28-33 cm Hat height = 5 to 5.5" 13-15 cm

Newborns
Head Circumference 13" - 14 " 33-36cm; hat circ = 11.5" - 13" Hat height = 5.5 to 6" 13-15 cm

Baby - 3 to 6 months
Head Circumference: 14" - 17 " 36-43 cm; Hat height= 6.5 - 7" 15-18 cm

Baby - 6 to 12 months
Head Circumference: 16" - 19 " 41-48 cm ; Hat height = 7.5" 18 cm

Toddler - preschooler (12 months - 3 years)
Head Circumference: 18" to 20 " 46 -48 cm; Hat height = 8" 20 cm

Child (3 - 10 years)
Head Circumference: 19" - 20 1/2" 48-51 cm; Hat height =8.5" 22cm

Pre-teens and Teens Hat
Head Circumference: 20 1/2" - 22" 53 -56 cm; height 9-10" 25 cm

Adult Woman
Head Circumference: 21.5" - 22.5" Hat height = 11"

Adult Man
Head Circumference: 23" - 24" 58.4 cm - 61 cm; Hat height = 11"-11.5"

Following is a chart for measurements of a Bitty Baby Doll

1	Total Height: head to toe	38 cm
2	Chest: under the armpits over the shoulder blades and across the chest	31 cm
3	Waist: around the waist	31 cm
4	Hip: around the fullest part of the hips	35 cm
5	Neck to Waist: from the cervical to the waistline	8 cm
6	Inside Leg: from the crotch to the soles	15 cm
7	Arm & Shoulder Length: from the side of the neck to the wrist bone 8 Head Circumference: around the head right above the ears.	16 cm
		32 cm Baby Size Chart Yarn Weights Yarn Weight 1: Super Fine 2: Fine 3: Light 4: Medium 5: Bulky 6: Super Bulky Yarns in Category Baby, Fingering, Sock Baby, Sport DK, Light, Worsted Afghan, Aran, Worsted Chunky, Craft, Rug Bulky, Roving Needle Size (US) 1-3 3-5 5-7 7-9 9-11 11 and up Average stitches per 4 inches 27-32 23-26 21-24 16-20 12-15 6-11 Knitting Needle Conversion Chart Metric American British 2 mm 0 14 2.25 mm 1 13 2.75 mm 2 12 3 mm N/A 11 3.25 mm 3 10 3.50 mm 4 N/A 3.75 mm 5 9 4 mm 6 8 4.50 mm 7 7 5 mm 8 6 5.50 mm 9 5 6 mm 10 4 6.50 mm 10.5 3 7 mm N/A 2 7.50 mm N/A 1 8 mm 11 0 9 mm 13 00 10 mm 15 000 11 mm 17 N/A 19 mm 19 N/A 25 mm 50 N/A