Many people want to understand how everyday habits—such as smoking, body weight/BMI, regular physical activity, sleep, stress, and a sedentary lifestyle—may influence long-term health prospects. The calculator below uses these factors, along with a few common health conditions (e.g., high blood pressure, diabetes), to provide an informational, heuristic estimate of expected lifespan and the estimated…

Our online BMI calculator helps you determine your Body Mass Index (BMI) in seconds using only your height and weight. It instantly shows whether you fall into the underweight, normal weight, overweight, or obesity range, and it also displays the WHO classification, your healthy weight range, and your distance from the target zone. The formula…