BMI Calculator

Calculate your Body Mass Index (BMI) to check if you're at a healthy weight.

Important Disclaimer: This calculator is for informational purposes only and not intended as a substitute for professional medical advice. BMI is a screening tool, not a diagnostic of body fatness or health. Consult with a healthcare professional for proper health assessment.

Body Mass Index (BMI) is a measure of body fat based on your weight and height. It's a useful indicator to assess whether you are at a healthy weight for your height.

This calculator is designed for adults 18 years and older. For children and teens, please consult a healthcare professional.

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BMI calculator is for adults 18+
Optional - for statistical purposes only

How to Use the BMI Calculator

  1. Select your preferred unit system (Metric or Imperial)
  2. Enter your weight (in kilograms or pounds)
  3. Enter your height (in centimeters or feet/inches)
  4. Enter your age (must be 18 or older)
  5. Optionally select your gender (for statistical purposes)
  6. Click the "Calculate BMI" button

About BMI (Body Mass Index)

BMI is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared.

BMI Categories:

  • Underweight: BMI less than 18.5
  • Normal weight: BMI 18.5 to 24.9
  • Overweight: BMI 25 to 29.9
  • Obesity: BMI 30 or greater

Limitations of BMI

While BMI can be a useful tool for identifying potential weight issues, it does have limitations:

  • It doesn't account for differences in body composition (muscle vs. fat)
  • It doesn't consider the location of body fat
  • It may not be accurate for athletes, elderly individuals, or pregnant women
  • It doesn't account for ethnic and racial differences in body composition

Always consult with a healthcare professional for a complete assessment of your health and appropriate recommendations for your individual situation.

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