| Head Sizes for Babies* | ||||
| Grammie's Attic Size Group |
Girls | |||
| Age | Average | Range | ||
| small | preemie | 12½" | 10" | 13" |
| newborn | 13½" | 12¾" | 14¾" | |
| medium | 3 months | 15¼" | 14¾" | 16¾" |
| 6 months | 16¾" | 16" | 17½" | |
| 9 months | 17¼" | 16½" | 18" | |
| large | 12 months | 17¾" | 17" | 18½" |
| 18 months | 18¼" | 17½" | 19" | |
| 24 months | 18½" | 17¾" | 19½" | |
| 36 months | 19" | 18" | 20" | |
| Grammie's Attic Size Group |
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| Boys | ||||
| Age | Average | Range | ||
| small | preemie | 13" | 11" | 14" |
| newborn | 14" | 12¾" | 15¼" | |
| medium | 3 months | 16¼" | 15" | 17" |
| 6 months | 17" | 16½" | 18" | |
| large | 9 months | 17¾" | 16¾" | 18½" |
| 12 months | 18" | 17¼" | 19" | |
| 18 months | 18¾" | 18" | 19¾" | |
| 24 months | 19" | 18" | 20" | |
| 36 months | 19¼" | 18¼" | 20½" | |
| * Measurement around the head just above the eyebrows | ||||