Baby Growth Percentile Calculator
Calculate your baby's height and weight percentile based on CDC/WHO growth charts for age and sex.
How It Works
Enter your baby's age, weight, and height. The calculator compares values against WHO growth chart LMS parameters to compute the percentile rank, showing where your baby falls among peers of the same age and sex.
Formula
Z-score = (X^L - 1) / (L x M x S) where L, M, S are WHO LMS parameters
Frequently Asked Questions
What is a normal growth percentile for babies?
Any percentile between the 3rd and 97th is considered normal. What matters most is consistent growth along a curve, not a specific percentile number.
Should I worry if my baby is in a low percentile?
Not necessarily. Small parents often have small babies. Consult your pediatrician if your baby drops more than two major percentile lines or shows sudden growth changes.