BMI Formula:
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Body Mass Index (BMI) for children is a measure that adjusts for age and gender, comparing a child's weight to their height. Unlike adults, children's BMI is evaluated using percentile charts specific to their age and sex.
The calculator uses the standard BMI formula:
The result is then compared to CDC growth charts to determine the child's BMI percentile for their age and gender.
Details: Tracking BMI in children helps identify potential weight problems early. The percentile indicates how a child's BMI compares to others of the same age and gender.
Tips: Enter weight in kilograms, height in meters, and exact age in years. For accurate results, measurements should be recent and taken with calibrated equipment.
Q1: Why use percentiles for children instead of fixed values?
A: Children's body composition changes with growth, so percentiles account for normal developmental changes.
Q2: What are the BMI categories for children?
A: Underweight (<5th percentile), Healthy weight (5th-85th), Overweight (85th-95th), Obese (≥95th).
Q3: How often should children's BMI be checked?
A: Annually is typical, but more frequent monitoring may be needed if weight concerns exist.
Q4: Are there limitations to BMI for children?
A: BMI doesn't distinguish between fat and muscle mass. Athletic children may have high BMI without excess fat.
Q5: What if my child's BMI is high?
A: Consult a healthcare provider for further evaluation. They may assess diet, activity levels, and growth patterns.
Q6: Where can I find official growth charts?
A: CDC growth charts are available at: https://www.cdc.gov/growthcharts/