How to Calculate BMI Correctly

Body Mass Index (BMI) is a simple height-to-weight ratio used to classify underweight, normal weight, overweight, and obesity in adults. While it's not a direct measure of body fat, it correlates strongly with metabolic disease risk.

The Formula

The basic formula is Weight (kg) / Height (m)².

For example, if you weigh 70 kg and your height is 1.75 meters: 70 / (1.75 * 1.75) = 22.86

BMI Categories

• Underweight: Below 18.5
• Normal weight: 18.5 - 24.9
• Overweight: 25.0 - 29.9
• Obesity: 30.0 and above

Why BMI Matters

Maintaining a normal BMI reduces the risk of chronic conditions such as heart disease, high blood pressure, type 2 diabetes, and certain cancers. However, athletes with high muscle mass might have a high BMI without having excess body fat.

Try our BMI Calculator to check your status instantly!