Pediatric BMI

Calculate BMI percentiles and Z-scores for ages 2–20 years based on CDC standards.

BMI Calculation Unavailable

CDC BMI-for-Age charts are only standardized for children aged 2 to 20 years. The current patient is .... For infants under 2 years, please use weight-for-length charts in the Growth section.

Patient Demographics

BMI Input

Calculated BMI
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Age at Test
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Enter BMI Readings

Input the child's weight and height to automatically compute BMI-for-Age percentile, standard Z-score, and clinical growth categorization.

BMI-for-Age Assessment

Results for children aged 2-20 years

Pending Input
BMI Percentile
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Z-Score (SD)
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Weight Status Category

  • Underweight (< 5th)
  • Healthy Weight (5th - 85th)
  • Overweight (85th - 95th)
  • Obese (≥ 95th)

BMI-for-Age Comparison

BMI History

# Age Height Weight BMI Percentile Action

BMI Reference Guide

Obese ≥ 95th Percentile
Overweight 85th to < 95th Percentile
Healthy Weight 5th to < 85th Percentile
Underweight < 5th Percentile