According to current growth charts, an infant can be expected to increase his or her birth length by in 1 year.

According to current growth charts, an infant can be expected to increase his or her birth length by 9,8 inches in 1 year, that is, half of what it measured at birth, a growth that will not be repeated in the rest of life. An average height increase of two centimeters per month is estimated, although the growth is not uniform, but increases more rapidly during the first months and slows down as the child approaches the year of life.