⏳ Life Expectancy Calculator

This calculator provides a rough estimate based on population-level statistics from WHO and academic longevity research. Individual lifespan varies enormously based on genetics, healthcare access, accidents, and factors not covered here. Treat it as a motivational guide, not a medical prediction.

On average, smoking reduces life expectancy by 10 years. This figure is from the CDC and multiple longitudinal studies. However, quitting at any age helps — quitting before 40 reduces the risk of smoking-related death by about 90%.

Yes. Research consistently shows that regular moderate exercise (150 minutes/week) is associated with 3–7 additional years of life. It reduces the risk of cardiovascular disease, diabetes, some cancers, and cognitive decline.

Globally, women live 4–7 years longer than men on average. Biological factors include higher estrogen levels (protective of the heart), differences in immune response, and lower rates of risk-taking behaviour. Occupational hazards and social factors also contribute.

Japan consistently ranks at or near the top with an average life expectancy of 84–85 years. Monaco and Singapore also rank very highly. The USA, despite high healthcare spending, ranks around 46th globally at approximately 78.5 years.