What is a healthy BMI?

For most adults, a BMI between 18.5 and 24.9 is considered a healthy weight range. However, BMI is only a screening tool.

BMI is a useful population-level screen but doesn't measure body fat directly or account for muscle mass, so it can misclassify athletes and others.

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BMI Calculator

Body Mass Index (BMI) estimates whether your weight is in a healthy range for your height. Enter your details below.

Height (cm)Weight (kg)

Enter your height and weight to see your BMI.

What your BMI means

BMI divides your weight by the square of your height. The result places you in one of four general categories: underweight, healthy weight, overweight, or obesity.

Below 18.5 — underweight
18.5–24.9 — healthy weight
25.0–29.9 — overweight
30.0 and above — obesity

BMI is a screening tool, not a diagnosis. Factors like muscle mass, age, and ethnicity affect what's healthy for you, so discuss your results with a healthcare professional.