1. What is BMI for Children?

BMI (Body Mass Index) 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:

The result is then compared to NHS growth charts to determine the percentile for the child's age and gender.

3. Importance of BMI Calculation

Details: Tracking BMI in children helps identify potential weight problems. Unlike adults, children's BMI must be interpreted relative to other children of the same age and sex.

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters, age in years (2-18), and select gender. For accurate results, measurements should be taken with minimal clothing.

5. Frequently Asked Questions (FAQ)

Q1: Why use percentiles for children instead of fixed values?
A: Children's body composition changes as they grow, so their BMI must be compared to others of the same age and sex.

Q2: What do the percentile ranges mean?
A: Below 2nd = underweight; 2nd-91st = healthy weight; 91st-98th = overweight; Above 98th = very overweight.

Q3: Is BMI accurate for all children?
A: BMI is a screening tool but doesn't directly measure body fat. Athletic children may have high BMI due to muscle.

Q4: How often should children's BMI be checked?
A: NHS recommends annual checks as part of routine health assessments.

Q5: What if my child is above the 91st percentile?
A: Consult a healthcare professional for personalized advice on diet and activity.