BMI Calculator

Calculate your Body Mass Index

BMI Categories

Underweight< 18.5
Normal18.5 - 24.9
Overweight25 - 29.9
Obese>= 30

Understanding Your BMI Results

Body Mass Index (BMI) is a simple calculation using your height and weight to estimate body fat.

BMI Categories

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

Limitations of BMI

  • Does not distinguish between muscle and fat mass
  • Athletes may have a high BMI due to muscle, not fat
  • May not be accurate for elderly or very short/tall individuals

Understanding Your BMI Results

Body Mass Index (BMI) is a simple calculation using your height and weight to estimate body fat. It's widely used by healthcare professionals as a screening tool.

BMI Categories

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

How to Calculate BMI

BMI = weight (kg) / height squared (m2). In imperial: BMI = (weight in lbs x 703) / height in inches squared.

Limitations

  • Does not distinguish between muscle and fat mass
  • Athletes may have a high BMI due to muscle
  • May not be accurate for elderly or very short/tall individuals
  • Does not account for body composition or fat distribution

Use BMI as a starting point, not a final diagnosis. Combine it with other measurements like waist circumference and body fat percentage for a complete picture.

© 2026 SaaS Farm