Human head
Society and culture
One study in the United States estimated the average human head circumference to be 57 centimetres (22 1⁄2 in) in males and 55 centimetres (21 3⁄4 in) in females.[dubious – discuss] A British study by Newcastle University showed an average size of 57.2 cm for males and 55.2 cm for females with average size varying proportionally with height
Human head-18