How accurate is this calculator?

It uses WHO baseline life-expectancy data combined with well-documented statistical risk adjustments. Individual results vary greatly; treat this as a rough statistical estimate, not a medical prediction.

What countries are available?

The top 30 most-populated countries are included, covering the vast majority of the world's population.

How does smoking affect the estimate?

Smoking is associated with roughly 10 years of reduced life expectancy on average, based on epidemiological studies.

Is my data stored anywhere?

No. All calculations happen in your browser and no personal data is ever transmitted or stored.

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Life Expectancy Calculator

Estimate your life expectancy based on lifestyle

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About this tool

Get a statistical estimate of your life expectancy by entering your age, sex, country, and a handful of lifestyle factors—smoking status, exercise frequency, BMI range, and diet quality. The calculator adjusts the WHO/UN baseline life-expectancy figures for your country based on well-studied risk modifiers and shows you years remaining, the percentage of life already lived, and a breakdown of how each habit affects your estimate. This is a statistical model, not medical advice.

How to use

1 Enter your current age.
2 Select your biological sex.
3 Choose your country from the dropdown.
4 Fill in lifestyle factors: smoking, exercise, BMI range, and diet quality.
5 Click 'Calculate' to see your estimated life expectancy and years remaining.
6 Review the habits breakdown to see which factors have the biggest impact.

Frequently Asked Questions

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