Life Expectancy Calculator

Life expectancy varies dramatically based on where you live, how you live, and your health history. Using WHO baseline data for 20 countries combined with well-studied lifestyle modifiers, this calculator estimates your statistical lifespan and shows you — in clear terms — which factors are adding years to your life and which are subtracting them.

The factors included — smoking status, exercise frequency, BMI range, and chronic conditions — are among the most evidence-backed predictors of longevity. A current smoker, for example, loses an average of 8 years of life expectancy. Conversely, consistent vigorous exercise can add 3 or more years. Seeing these impacts side by side makes the trade-offs tangible in a way that general health advice rarely does.

This calculator is based on population-level statistics and is not a medical prediction. Individual outcomes vary widely based on genetics, access to healthcare, and factors not captured here. Use the result as a reflection tool, not a forecast — and speak with a doctor about any specific health concerns.