A rough estimate of life expectancy based on your age and general lifestyle.
This calculator gives a rough, non-medical life expectancy estimate based on your age, sex, smoking status, and activity level.
The tool starts from general population averages by age and sex, then adjusts for smoking status and how active you are. These factors are among the most studied influences on longevity, so they give a reasonable rough picture. The result is a single estimated age, not a prediction of any individual's actual lifespan.
This is an educational estimate and not medical advice, and it cannot account for your family history, specific health conditions, diet, or other personal factors. Real life expectancy depends on far more variables than four inputs can capture. Use the number only as a general reference point, and talk with a healthcare professional for guidance about your own health.
No, it is an educational estimate based on broad averages and a few factors. It is not medical advice and should not be used for health or financial decisions.
Smoking is strongly linked in research to reduced life expectancy, while quitting recovers some of that gap over time. The tool reflects this with an adjustment for current and former smokers.
Factors like staying active and not smoking are associated with longer life in population studies. For real guidance tailored to you, speak with a doctor.
See the exact formula and a worked example on our methodology page.