Life Expectancy Estimate Calculator

Work out life expectancy estimate instantly with clear inputs, formula shown and shareable results.

About Life Expectancy Estimate Calculator

Starts from the published period life expectancy for your population and applies an explicit net adjustment for lifestyle and health factors.

Formula

Adjusted expectancy

Estimated life expectancy = population period life expectancy + net adjustment; years remaining = estimate - current age

Worked example

With the default values below, Life Expectancy Estimate Calculator returns Adjusted life expectancy of 75.0. Change any input above and every figure here is recalculated in your browser.

Inputs used

Current ageaccepts 1–110 years: 45 years
Period life expectancy at birth for your populationaccepts 40–95 years: 79 years
Net adjustment for lifestyle and healthaccepts -20–15 years: -4 years

Results

Adjusted life expectancy: 75.0 years
Years remaining on this estimate: 30.0 years
Share of the estimate already lived: 60.0%
Adjustment applied: -4.0 years

Step by step

1Values used
2Adjusted expectancy
3Adjusted life expectancy= 75.0 years
4Years remaining on this estimate= 30.0 years
5Share of the estimate already lived= 60.0
6Adjustment applied= -4.0 years

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or fees or charges into account.
Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

Why not model each risk factor?

Published hazard ratios overlap and interact, so summing them double counts; a single transparent adjustment is more honest.

What is period life expectancy?

It assumes today's age-specific death rates persist; cohort measures allow for future mortality improvement and are usually higher.