What data source does this use for the baseline?

The baseline remaining life expectancy values come from the US Social Security Administration (SSA) Period Life Table, which publishes remaining life expectancy by single year of age and sex. These are the same tables used by actuaries and pension funds.

How are lifestyle adjustments applied?

Each lifestyle factor adds or subtracts years from the baseline based on published epidemiological estimates. For example, current smoking is associated with roughly 10 fewer years (CDC/MMWR), obesity (BMI ≥ 30) with 3–7 fewer years, and regular vigorous exercise with 3–5 additional years.

Is this a medical prediction?

No. This tool provides a statistical estimate based on population averages, not an individual medical forecast. Many factors — genetics, access to healthcare, specific medical history — are not captured here. Consult a physician for personalized health guidance.

Why does BMI affect life expectancy?

Sustained obesity raises the risk of cardiovascular disease, type 2 diabetes, and certain cancers. Underweight (BMI < 18.5) is also associated with higher mortality risk. The normal BMI range (18.5–24.9) has the lowest all-cause mortality in large cohort studies.

How much does exercise matter?

Meeting the US Physical Activity Guidelines (150+ minutes of moderate activity per week) is associated with 3–5 additional years of life expectancy compared to a sedentary lifestyle, based on meta-analyses of prospective cohort studies.

Can I use this for insurance or legal purposes?

No. This tool is for educational and planning purposes only. It is not a certified actuarial assessment and should not be submitted as evidence in legal, financial, or insurance proceedings.

Life Expectancy Estimator

Name: Life Expectancy Estimator
Availability: InStock
Author: Nham Vu

Enter your age, sex, and lifestyle habits to get an estimate of your remaining life expectancy based on US actuarial data.

Your Profile

Current Age

Biological Sex

Male Female

Smoking Status

Height & Weight (for BMI)

Height (cm)

Weight (kg)

Weekly Exercise Level

Diet Quality

Fill in your profile on the left and click Estimate.

Summary

Enter your age, sex, and lifestyle habits to get an estimate of your remaining life expectancy based on US actuarial data.

How it works

Enter your current age (18–99) and biological sex.
Select your smoking status: never, former, or current smoker.
Enter your height and weight so BMI can be computed automatically.
Choose your typical weekly exercise level.
Choose your overall diet quality.
The estimator applies each lifestyle factor as a multiplicative year adjustment to your SSA baseline remaining life expectancy.

Use cases

Estimate how many years of retirement savings you may need.
Understand the quantified impact of smoking or obesity on longevity.
Set a health baseline before starting a fitness or diet program.
Use in financial planning to model longevity risk.
Compare estimated longevity before and after a lifestyle change.
Educate patients or students on modifiable risk factors for mortality.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu