Free Online BMI Calculator

Calculate your Body Mass Index and understand your health better

Calculate Your BMI

BMI Categories

Underweight < 18.5
Normal weight 18.5 - 24.9
Overweight 25 - 29.9
Obese ≥ 30
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Understanding Your 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 is a screening tool that can indicate whether a person is underweight, healthy weight, overweight, or obese. However, BMI does not directly measure body fat, so some people, such as athletes, may have a BMI that identifies them as overweight even though they do not have excess body fat.

Why BMI Matters

BMI is used as a screening tool to identify potential weight problems in adults. It's a useful measure of overweight and obesity.

BMI Limitations

BMI doesn't account for muscle mass, bone density, or overall body composition. Athletes may have high BMI but low body fat.

Health Implications

Maintaining a healthy BMI can reduce your risk of developing serious health conditions like heart disease and diabetes.

Next Steps

If your BMI is outside the healthy range, consult with a healthcare provider for personalized advice and guidance.