Notice For informational purposes only, not medical advice. Every longevity figure below is a statistical rule of thumb, never a guarantee — no number on this page is a prediction or promise about your life or health.

Life Expectancy Calculator

Informational-only longevity estimate — estimated remaining years, estimated age at death, and a range, built from your profile plus clearly-labeled rule-of-thumb risk adjustments.

Profile OFF
enter age and details
Life Table OFF
Risk Factors OFF
Estimate OFF
Range OFF

Profile

The three inputs that pick your starting point before any risk adjustments.

base expectation = table[country][sex]
  • Current age — years lived today, used to convert life-expectancy-at-birth into remaining years for a survivor.
  • Sex — male / female national expectation-at-birth columns differ.
  • Country — selects the national life-expectancy-at-birth table (US / UK / Canada / Australia).

Life Table

The tool ships approximate life-expectancy-at-birth values (in years) for four countries, split by sex. You can edit them inline if you want to use your own source figures.

base = life expectancy at birth (editable years)
e.g. US male 75.0 · US female 80.0
  • National values are averages at birth — they already reflect the whole population, including health risks.
  • Edits apply immediately to every calculation on the page; the Reset table button restores the shipped values.
  • Official life tables are far richer (age-by-age mortality curves). This flat table is a deliberate simplification that is safe only because the output is informational.

Risk Factors

Optional lifestyle factors are applied as rule-of-thumb multipliers on the base expectation. They are crude population-level approximations — not medical advice and not a diagnosis.

adjusted expectation = base × smoker × activity × BMI × alcohol
e.g. 75.0 × 0.88 × 1.00 × 1.00 × 1.00 ≈ 66.0 yrs
  • Multipliers are clearly shown next to every choice so nothing about the math is hidden.
  • Real longevity depends on genetics, health history, medical care, and environment in ways a multiplier cannot capture.
  • Choosing a risk factor neither raises nor lowers your actual lifespan — it only moves this informational estimate.

Estimate

The headline output is an estimated age at death and the remaining years behind it. Once you have survived past the starting expectation, a small survivor edge is added because each year lived past expectation is itself evidence of robustness.

remaining ≈ (adjusted expectation − age) × 0.95 + survivor edge
survivor edge = clamp((age − 50) × 0.18, 0, 9)
estimated age at death = age + remaining
  • Remaining years are clamped so they can never go negative, even decades beyond the table value.
  • All numbers use one decimal place so the estimate is readable without looking precise.
  • This is a single-digit accuracy tool on purpose — a rounded estimate is safer than a fake-exact prediction.

Range

Every estimate ships with a deliberately wide range (±8 years around the point estimate). Real lifespans vary enormously, so the correct takeaway is the range, not the middle number.

range = estimated age at death ± 8 years
  • The width is a convention for this informational tool, not a statistically derived confidence interval.
  • Some individuals live decades either side of the range — that is normal, not a product flaw.
  • Use the result for curiosity and planning context, never for decisions that depend on a date.
Your Profile Inputs
Years lived so far, 0–120.
Picks the male or female expectation-at-birth column.
Selects the base life-expectancy-at-birth table (editable below).
Risk Factors Rule of thumb
Each choice shows its multiplier in the breakdown below — no hidden adjustments.
Applied Multipliers Yearly ×
Longevity Estimate Informational
Estimated age at death
—
years old
Estimated remaining years
—
years from now
Plausible range
—
years old (wide)
Combined adjustment ×1.00
Enter your age to see the estimate. No figure here is a guarantee — it is a rule-of-thumb point estimate with a wide informational range.
Life Expectancy at Birth Editable
Country Code Male (years) Female (years)
Shipped approximate national life-expectancy-at-birth values. Edit any cell to use your own source — changes recalculate the estimate immediately. Rule-of-thumb figures, not official actuarial tables.