Check your Body Mass Index instantly — metric or imperial. Free, private, no signup.
Under 18.5 underweight • 18.5–24.9 healthy • 25–29.9 overweight • 30+ obese
Body Mass Index estimates body fat from height and weight. It's a screening tool used worldwide — not a diagnosis. Athletes with high muscle mass can score "overweight" while being perfectly healthy, so treat it as a rough guide and talk to a doctor for real advice.