1. What is BMI For Children?

Body Mass Index (BMI) for children is calculated the same way as for adults, but the results are interpreted differently. Children's BMI is compared to growth charts for children of the same age and sex to determine a percentile ranking.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in meters

Explanation: The result is then compared to UK growth charts to determine the child's percentile for their age and gender.

3. Importance of BMI Calculation

Details: BMI percentile is the most common indicator of weight status in children and adolescents. It helps identify potential weight problems that may lead to health issues.

4. Using the Calculator

Tips: Enter weight in kg, height in meters, age in years (2-18), and select gender. For accurate results, measurements should be taken with minimal clothing and no shoes.

5. Frequently Asked Questions (FAQ)

Q1: What do the percentile results mean?
A: Percentiles indicate how a child's BMI compares to others of the same age and gender. Below 2nd percentile: underweight; 2nd-91st: healthy weight; 91st-98th: overweight; Above 98th: very overweight.

Q2: Why is BMI interpreted differently for children?
A: Children's body composition changes as they grow, and differs between boys and girls, so age- and sex-specific percentiles are used.

Q3: Is BMI accurate for all children?
A: BMI is a screening tool but doesn't directly measure body fat. Athletic children with more muscle mass may have higher BMI without excess fat.

Q4: How often should my child's BMI be checked?
A: The NHS recommends measuring BMI annually as part of routine health checks.

Q5: What should I do if my child's BMI is concerning?
A: Consult your GP or health visitor for a more comprehensive assessment and advice.