CDC Growth calculator for 2 to 20 years

2000 and 2022 CDC growth charts to calculate growth metric percentiles and Z-scores on children and adolescents from 2 to 20 years of age. Includes Weight-for-age, Stature-for-age, Weight-for-stature, and BMI-for-age.

Always uses the CDC 2022 extended BMI-for-age for BMI over the 95%ile because of poor performance of the original CDC 2000 charts when extrapolating beyond the 97%ile.

From 2 to 20 years
Male Female
Age (months)
OR Date of birth
and Date of measure
Weight (kg)
Height (cm)
Optional: GA at birth

BMI categories for children or adolescents >2 years of age

  • Underweight, for BMI < 5th percentile
  • Healthy weight, for BMI >= 5th percentile to < 85th percentile
  • Overweight, for BMI >= 85th to < 95th percentile
  • Obesity, for BMI >= 95th percentile
  • Severe obesity, if the BMI is >=120% of the 95th percentile or >=35 kg/m2

Tips and Tricks

  • Valid ages from 2 to 20 years
  • For BMI over the 95th percentile, CDC extended BMI-for-age calculations are performed
  • Weight-for-stature charts available only for stature between 77 and 121.5 cm
  • Age: months assumed. To enter years and months, enter #y #m; e.g., 4y 5m
  • Weight: kg assumed. To enter pounds and ounces, enter #-#; e.g., 8-4 for 8 lb and 4 oz
  • Height: cm assumed. To enter feet and inches, enter #' #"; e.g., 4' 5" for 4 feet 5 inches
  • Gestational age, enter in the form of ## #/7; e.g., 30 3/7 for 30 weeks and 3 days gestation

Based on