BMI Percentile Calculator

How to Use the Calculator

To calculate your child’s BMI percentile, provide the following inputs:

• Age (years): Enter the age of the child.
• Gender: Select whether the child is male or female.
• Weight (kg): Input the child’s weight in kilograms.
• Height (cm): Input the child’s height in centimeters.

The calculator will compute:

• BMI: Body Mass Index (in kg/m²).
• Percentile: Where the child’s BMI stands compared to peers.
• Category: The child's weight status (e.g., underweight, healthy weight, overweight, or obese).

What's a Healthy or Unhealthy Range?

• Healthy Range: A BMI percentile between the 5th and 85th percentile typically indicates a healthy weight for children and teens.
• Unhealthy Range:
  • Below the 5th percentile: Underweight – Potential nutritional or developmental concerns.
  • Above the 85th percentile: Overweight or Obese – May indicate increased risk of health issues; requires further evaluation.

How Does the BMI Percentile Calculator Work?

• The BMI is calculated using the formula: BMI = weight (kg) / height² (m²)
• This BMI value is compared to standardized pediatric growth charts, factoring in age and gender, to assign a percentile.
• Based on the percentile, the child’s weight status is categorized:
  • Underweight: < 5th percentile
  • Healthy Weight: 5th - 85th percentile
  • Overweight: 85th - 95th percentile
  • Obese: > 95th percentile

Why Use This Calculator?

• Early Detection: Quickly identifies potential growth or weight concerns in children.
• Customized Insights: Adjusts for age and gender, making results more precise than standard BMI for adults.
• Track Development: Helps monitor changes in weight status over time, ensuring early intervention if necessary.
• Ease of Use: Combines growth chart analysis with BMI calculations, saving time and effort.