Head Height Ratio

A new born infant is 3 heads tall.

At 3 months old, ratio is 3 1/12 heads tall.

At 6 months old, ratio is 3 1/6 heads tall

At 9 months old, ratio is 3 1/4 heads tall.

At 12 months old, ratio is 3 1/3 heads tall.

At 15 months old, ratio is 3 5/12 heads tall.

At 18 months old, ratio is 3 1/2 heads tall.

At 21 months old, ratio is 3 7/12 heads tall.

At 24 months old, ratio is 3 2/3 heads tall.

At 27 months old, ratio is 3 3/4 heads tall.

At 30 months old, ratio is 3 5/6 heads tall.

At 33 months old, ratio is 3 11/12 heads tall.

At 3 years old, ratio is 4 heads tall, classify as toddler.

At 3.25 years old, ratio is 4 1/12 heads tall.

At 3.5 years old, ratio is 4 1/6 heads tall.

At 3.75 years old, ratio is 4 1/4 heads tall.

At 4 years old, ratio is 4 1/3 heads tall.

At 4.25 years old, ratio is 4 5/12 heads tall.

At 4.5 years old, ratio is 4 1/2 heads tall.

At 4.75 years old, ratio is 4 7/12 heads tall.

At 5 years old, ratio is 4 2/3 heads tall.

At 5.25 years old, ratio is 4 3/4 heads tall.

At 5.5 years old, ratio is 4 5/6 heads tall.

At 5.75 years old, ratio is 4 11/12 heads tall.

At 6 years old, ratio is 5 heads tall, classify as child.

At 6.5 years old, ratio is 5 1/12 heads tall.

At 7 years old, ratio is 5 1/6 heads tall.

At 7.5 years old, ratio is 5 1/4 heads tall.

At 8 years old, ratio is 5 1/3 heads tall.

At 8.5 years old, ratio is 5 5/12 heads tall.

At 9 years old, ratio is 5 1/2 heads tall.

At 9.5 years old, ratio is 5 7/12 heads tall.

At 10 years old, ratio is 5 2/3 heads tall.

At 10.5 years old, ratio is 5 3/4 heads tall.

At 11 years old, ratio is 5 5/6 heads tall.

At 11.5 years old, ratio is 5 11/12 heads tall.

At 12 years old, ratio is 6 heads tall, classify as young adult.

At 13 years old, ratio is 6 1/12 heads tall.

At 14 years old, ratio is 6 1/6 heads tall.

At 15 years old, ratio is 6 1/4 heads tall.

At 16 years old, ratio is 6 1/3 heads tall.

At 17 years old, ratio is 6 5/12 heads tall.

At 18 years old, ratio is 6 1/2 heads tall.

At 19 years old, ratio is 6 7/12 heads tall.

At 20 years old, ratio is 6 2/3 heads tall.

At 21 years old, ratio is 6 3/4 heads tall.

At 22 years old, ratio is 6 5/6 heads tall.

At 23 years old, ratio is 6 11/12 heads tall.

At 24 years old, ratio is 7 heads tall, classify as full adult.

At 25 years old, ratio is 7 1/12 heads tall.

At 26 years old, ratio is 7 1/6 heads tall.

At 27 years old, ratio is 7 1/4 heads tall.

At 28 years old, ratio is 7 1/3 heads tall.

At 29 years old, ratio is 7 5/12 heads tall.

At 30 years old, ratio is 7 1/2 heads tall.

At 31 years old, ratio is 7 7/12 heads tall.

At 32 years old, ratio is 7 2/3 heads tall.

At 33 years old, ratio is 7 3/4 heads tall.

At 34 years old, ratio is 7 5/6 heads tall.

At 35 years old, ratio is 7 11/12 heads tall.

At 36 years old, ratio is 8 heads tall, classify as mature adult.