BMI Calculator for Kids
Calculate BMI for children ages 2-10 with age-specific percentiles and growth charts
Calculate Your Child's BMI
For children aged 2-10 years
BMI Results
Example Calculation
Example: 6-year-old boy, height 110 cm, weight 20 kg
Calculation: 20 kg ÷ (1.1 m)² = 16.5 BMI
Result: 50th-75th percentile (Normal weight status)
BMI Percentile Guide
Underweight
Below 5th percentile
Normal Weight
5th to 85th percentile
At Risk
85th to 95th percentile
Overweight
95th percentile and above
Healthy Tips for Kids
Focus on healthy habits, not weight
Encourage daily physical activity and play
Provide balanced, nutritious meals
Limit screen time and sedentary activities
Regular pediatrician check-ups
Understanding BMI for Children
Why BMI is Different for Kids
Children's BMI must be interpreted differently than adults because children are still growing. BMI changes substantially as children grow, and the amount of body fat differs between boys and girls. This is why BMI for children is compared to percentiles of other children of the same age and gender.
What Percentiles Mean
- •50th percentile: Average for age and gender
- •75th percentile: Above average (25% higher)
- •90th percentile: Well above average (10% higher)
- •95th percentile: Among the highest 5%
Important Considerations
Growth Patterns
Children grow at different rates and patterns. Some may have growth spurts that temporarily affect their BMI percentile.
Individual Variation
BMI doesn't distinguish between muscle and fat. Some muscular children may have higher BMI values but still be healthy.
Professional Guidance
Always consult with your child's pediatrician for comprehensive health assessment and personalized recommendations.
Medical Disclaimer
This BMI calculator for children is for informational purposes only and should not be considered as medical advice. Children's growth patterns vary significantly, and BMI interpretation requires professional medical expertise. Always consult with qualified pediatricians or healthcare professionals for comprehensive health assessments, growth monitoring, and personalized recommendations. This tool does not replace professional medical evaluation or diagnosis. Individual results may vary based on numerous factors including growth phase, body composition, genetics, and overall health status.