Longevity & Life Expectancy Methodology
How our life-expectancy estimates are calculated, and what they can't tell you.
How it works
Dayswise's life-expectancy estimates are based on published U.S. period life expectancy statistics from the Social Security Administration and the CDC's National Center for Health Statistics. A period life table estimates how long a person of a given age would be expected to live if current mortality conditions stayed exactly the same for the rest of their life. It is a statistical snapshot, not a prediction about any individual. Dayswise interpolates between published decade-interval figures by age and sex to produce an estimate for any birth date you enter.
What it can't tell you
These figures are illustrative statistical estimates, not medical, financial, or actuarial advice, and they cannot account for your personal health history, lifestyle, family history, or access to healthcare, all of which meaningfully affect individual life expectancy. Period life tables also tend to lag real-world improvements in mortality, since they're built from a recent snapshot of age-specific death rates rather than a forecast. For an estimate tailored to your circumstances, talk to a physician or a licensed actuary.
Remaining Life Expectancy by Age
Social Security Administration, Period Life Table, 2023 (2026 Trustees Report), retrieved from ssa.gov/oact/STATS/table4c6.html and verified 2026-10-01.
| Age | Remaining Years (Female) | Remaining Years (Male) |
|---|---|---|
| 0 | 81.06 | 75.79 |
| 10 | 71.59 | 66.39 |
| 20 | 61.74 | 56.69 |
| 30 | 52.08 | 47.5 |
| 40 | 42.64 | 38.59 |
| 50 | 33.45 | 29.9 |
| 60 | 24.73 | 21.79 |
| 70 | 16.76 | 14.66 |
| 80 | 9.82 | 8.5 |
| 90 | 4.8 | 4.11 |
| 100 | 2.23 | 2.04 |
| 110 | 1.13 | 1.13 |
Source: Social Security Administration Period Life Table methodology and CDC/NCHS National Vital Statistics Reports on U.S. life expectancy.