BMI Calculator for Children

Welcome to Dike’s BMI Calculator for Children. Children grow and develop at different rates, so BMI interpretation for kids and teenagers must take into account age and gender. This calculator uses percentile charts to help parents and guardians understand if their child is underweight, healthy, overweight, or obese.

Calculate Your Child's BMI

Understanding BMI in Children

Unlike adults, children's BMI is interpreted using percentile charts based on age and gender. This accounts for the natural growth patterns and differences between boys and girls. The BMI percentile shows how your child compares to others of the same age and gender.

BMI Percentiles for Children

Underweight: <5th percentile
Healthy weight: 5th – 84th percentile
Overweight: 85th – 94th percentile
Obese: ≥95th percentile

Health Risks for High BMI in Children

Children with high BMI may face:

Type 2 diabetes
High blood pressure
Early puberty
Orthopedic problems
Psychological challenges (self-esteem, bullying)

Low BMI Concerns

Children with low BMI may experience:

Delayed growth or puberty
Weakened immune system
Nutritional deficiencies
Fatigue or poor concentration

Tips for Maintaining a Healthy BMI in Children

Encourage a balanced diet with fruits, vegetables, whole grains, and lean protein
Limit sugary drinks and snacks
Promote regular physical activity and outdoor play
Monitor BMI regularly using percentiles
Consult pediatricians for personalized guidance

Related Tools & Resources

Frequently Asked Questions (FAQ)

1. How is BMI different for children?

Children's BMI is interpreted using age- and gender-specific percentiles instead of fixed cutoffs like adults.

2. At what age can children start using BMI calculators?

BMI can be monitored from age 2 and up to adolescence.

3. Can BMI identify growth problems?

Yes, BMI helps parents identify potential underweight or overweight issues, but professional evaluation is recommended.

4. How often should children's BMI be checked?

Once or twice a year is sufficient, or more frequently if advised by a pediatrician.

5. Are BMI charts reliable for all children?

They provide a good general screening tool but may not account for every individual variation in body composition.

Medical Disclaimer

This calculator and content are for educational purposes only. They do not replace medical advice. Consult your child’s pediatrician for personalized recommendations.