There is no specific size
22
16 inches
3 billion miles
30 inches
46
There is no specific size
22
Head circumference of 3 year old?
55 cm
16 inches
3 billion miles
the average size for a 10 year old boy 4'7 is 19-21 inches
The average circumference of an 8-year-old's head is around 21-22 inches. However, head sizes can vary greatly among individuals, so it's best to measure the specific child's head for a more accurate result.
Head circumference is related to body weight. As the normal weight varies widely HC can also vary. The two should correspond on a centile chart. To answer the question... Average is roughly 16 inches or 40 cm (both numbers rounded to the nearest whole number.
my 3 year old has big head. his is 53 cms. (21 in)
to be honest there is no average to this.It all really depends on the persons brain size and capacity.