BMI Calculator

Calculate your Body Mass Index and check your health category

BMI Calculator
Enter your height and weight to calculate your BMI
BMI Categories
Standard BMI weight categories for adults
Underweight
< 18.5
Normal Weight
18.5 - 24.9
Overweight
25.0 - 29.9
Obese
≥ 30.0
About BMI

BMI Formula

Metric: BMI = Weight (kg) / (Height (m))²

Imperial: BMI = (Weight (lb) / (Height (in))²) × 703

What is BMI?

Body Mass Index (BMI) is a measure of body fat based on height and weight. It's commonly used as a screening tool to identify whether a person is at a healthy weight for their height. BMI applies to most adults 18-65 years old.

Important Note

BMI is a useful indicator of health at the population level. However, it is not accurate for use on an individual level as it does not distinguish between body fat and muscle mass. Always consult with a healthcare professional for personalized health advice.

Limitations of BMI

  • Does not distinguish between muscle and fat mass
  • May not be accurate for athletes, elderly, or children
  • Does not account for bone density or overall body composition
  • Different standards may apply for different ethnic groups