Everyday tool
BMI Calculator
Enter your height and weight to get your Body Mass Index and weight category.
—BMI
—Category
How BMI categories are defined
Under 18.5 is underweight, 18.5–24.9 is normal weight, 25–29.9 is overweight, and 30 or above is obese, per the standard WHO classification. BMI doesn't distinguish muscle from fat, so it's a rough screening measure rather than a diagnosis — athletes and very muscular people often read "overweight" despite low body fat.