BMI Calculator

How BMI is calculated

Body Mass Index (BMI) is calculated by dividing your weight in kilograms by your height in meters squared. The formula is: BMI = weight (kg) / height (m)². BMI is a simple screening tool that provides a rough assessment of whether your weight is in a healthy range. It doesn't account for muscle mass, bone structure, or body composition, and should be used as a starting point — not a diagnosis.

What your result means

A BMI between 18.5 and 24.9 is considered normal weight. Below 18.5 indicates underweight, while above 25 suggests overweight. A BMI over 30 is classified as obese. Keep in mind that BMI doesn't distinguish between fat and muscle mass — a well-trained athlete may have a high BMI without being overweight. Consult your doctor for a comprehensive assessment.

Frequently Asked Questions