BMI Calculator

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
  • Obese: BMI 30 or greater

Important Notes:

  • BMI is a screening tool and not a diagnostic of health or body fatness
  • It may not be accurate for athletes, pregnant women, elderly, or individuals with high muscle mass
  • Consult with a healthcare provider for personalized health advice

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