What BMI tells you
Body Mass Index (BMI) estimates whether your weight is in a healthy range for your height. It's a quick, widely used screening number. Enter your height and weight in US or metric units and this calculator returns your BMI, its category, and the healthy weight range for your height.
BMI categories
- Under 18.5 — Underweight
- 18.5 – 24.9 — Healthy weight
- 25 – 29.9 — Overweight
- 30 and above — Obese
The limits of BMI
BMI doesn't distinguish muscle from fat, so very muscular people can read as "overweight" while being healthy. It also doesn't reflect fat distribution. Treat it as a starting point, not a diagnosis, and talk to a healthcare professional about your individual health.