A healthy BMI generally falls between 18.5 and 24.9 according to the World Health Organization, but that single range does not tell the full story. This calculator computes your BMI and shows exactly where you fall on the spectrum from underweight through normal weight, overweight, and the three classes of obesity. It provides the specific weight range that would place you in the healthy category for your height, giving you a concrete target if you are working toward a healthier weight.
Calculator
Calculate your Body Mass Index and see exactly where you land on the healthy-weight scale.
Enter your height and weight
Your BMI and weight category will appear here instantly.
Body Mass Index (BMI) is calculated by dividing your weight in kilograms by the square of your height in meters (kg/m²). It provides a simple numeric measure of a person's thickness or thinness. While widely used by health organizations, BMI does not directly measure body fat percentage.