SSA life table - range calculator
Life expectancy at 40 for men: an estimate range, not a date
Updated 2026-06-14 - estimate language only
The SSA 2023 period life table reports an average of 38.6 years remaining for men at exact age 40. That is a population-table statistic, not a forecast about one person.
Use the widget below to turn the table into a confidence band. If smoking applies, the quick widget uses DaysLeft's existing intake defaults until the full calculator asks amount and duration.
Interactive estimate
Mini remaining-years calculator
The displayed band uses DaysLeft life-table logic; cited statistics below use public SSA, WHO, or CDC sources. This is an estimate band, not a medical diagnosis or a personal death prediction.
80% band
17-50 years
Broad remaining-time estimate range.
50% inner band
26-44 years
Narrower middle band, still not a date.
Smoker=yes uses the existing quick-intake defaults from DaysLeft until the full calculator asks amount and duration. HR index: 1.20.
Page statistics
SSA average remaining years
38.6 years
Period-table average for a man at exact age 40.
One-year mortality probability
0.31%
SSA qx for the next year in the 2023 period table.
Survivors in table cohort
94,727
Out of 100,000 synthetic births alive at this exact age.
Male-female table gap at 40
4.0 years
women table average differs under the same SSA source.
How to read this page
A life table describes a population under a set of period mortality rates. It is useful for context, but it cannot know your medical history, family history, fitness, sleep, alcohol use, or luck.
That is why this page avoids a single death age. The mini calculator returns a range, then routes to the full DaysLeft calculator for a broader biological-age estimate.
Why the widget asks about smoking
Smoking is one of the largest modifiable mortality signals in public-health data, but amount and duration matter. A three-input tool cannot responsibly infer pack-years, so it treats the yes/no flag as a quick screening input and labels the result as an estimate.
For a more specific result, the full calculator asks smoking frequency, duration, sleep, alcohol, activity, diet, chronic conditions, and other factors before showing a confidence band.
Sources
FAQ
What is life expectancy at 40 for men?
The SSA 2023 period table average is 38.6 years remaining for men at exact age 40. Treat that as a population statistic, not a personal prediction.
Why does DaysLeft show a range?
Individual lifespan has wide uncertainty. A range is more honest than a single date or a single death age.
Can habits change the estimate?
Habits can shift a statistical estimate, but DaysLeft avoids guarantee language. Use the full calculator to see a broader confidence band.
Next step
The public table is only the starting point. Use the full calculator when you want habits and biological-age context included in the estimate band.