Toddler Growth: Height, Weight & IQ Milestones

Toddler development at 21 months includes significant linguistic and physical milestones. Tracking height and weight percentiles helps identify healthy growth patterns and early signs of a high IQ.

Height & Weight Percentiles of Infants & Toddlers

Published Jun,13 2017 | By Alexis Jenkins

In order to assist doctors in plotting children's height and weight, the Centers for Disease Control and Prevention developed growth and weight percentile charts. These charts show how the size and growth patterns of one child compare with other children of the same age and gender.