Baby BMI-for-Age Calculator
Calculate your baby's BMI and compare it to age- and sex-specific CDC growth chart percentiles.
How It Works
Enter your baby's weight, height, age, and sex. The calculator computes BMI and compares it to CDC age-specific reference data to determine whether the baby is underweight, healthy weight, or overweight for their age.
Formula
BMI = Weight (kg) / Height (m)²
Frequently Asked Questions
Is BMI useful for babies?
BMI-for-age is used for children 2 years and older. For babies under 2, weight-for-length and weight-for-age charts are more appropriate tools used by pediatricians.
What is a healthy BMI percentile for children?
A BMI between the 5th and 85th percentile is considered healthy for children. Below 5th is underweight; 85th-95th is overweight; above 95th is obese by CDC standards.