Life Expectancy Calculator
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Life expectancy is an average, not a prediction for one person. In the Social Security Administration’s 2023 period life table, a 40-year-old U.S. man has 38.59 more years on average and a 40-year-old woman has 42.64.
The longer you have lived, the older your expected age at death: surviving the early years raises the average.
| Your result | |
| Remaining life expectancy | 40.6 years |
| Expected age | 80.6 |
| By sex at age 40 | |
| Male | 38.59 more years (to age 78.59) |
| Female | 42.64 more years (to age 82.64) |
| Life expectancy at other ages (average) | |
| At age 0 | 78.43 more years (to 78.43) |
| At age 20 | 59.22 more years (to 79.22) |
| At age 40 | 40.62 more years (to 80.62) |
| At age 50 | 31.68 more years (to 81.67) |
| At age 60 | 23.26 more years (to 83.26) |
| At age 65 | 19.39 more years (to 84.39) |
| At age 70 | 15.71 more years (to 85.71) |
| At age 75 | 12.26 more years (to 87.26) |
| At age 80 | 9.16 more years (to 89.16) |
| At age 85 | 6.53 more years (to 91.53) |
| At age 90 | 4.455 more years (to 94.45) |
| At age 100 | 2.135 more years (to 102.1) |
Show steps
- The calculator uses the Social Security Administration's 2023 period life table (used in the 2026 Trustees Report).
- Period life expectancy at age 40: male 38.59, female 42.64; average 40.62 more years.
- Expected age at death = current age + remaining years = 40 + 40.62 = 80.62.
- This is an average for everyone your age and sex, from death rates observed in one year. It is not a personal prediction.
How to use the life expectancy calculator
- Enter your age (decimals are fine).
- Choose male, female or the average of both.
- Press Calculate to see the average number of years left and the expected age, plus values for other ages.
What the numbers mean
A period life table takes the death rates observed at every age in one year (here 2023) and asks: if those rates stayed the same, how long would people live on average? It does not try to predict medical progress, and it says nothing about any one person, whose health, habits and family history matter far more.
Why expected age rises as you get older
A newborn’s life expectancy includes the small chance of dying young. Each year you survive removes that risk, so your expected age at death goes up. In the table, a U.S. newborn boy averages 75.79 years, but a 65-year-old man averages 18.12 more years, to about 83.
The math: expected value
Life expectancy is an expected value: the sum of each possible remaining lifetime times its probability. Because ages at death are skewed (a few people die young), this mean is usually a little lower than the median age at death.
Life expectancy and averages quiz: 10 questions
Test yourself with 10 multiple-choice questions. Choose an answer and press Submit to see if you are right and why. Your score appears at the end.
Quiz complete
Frequently asked questions
How accurate is this life expectancy calculator?
It reports exactly what the Social Security period life table says for your age and sex. It is accurate as a population average but cannot predict an individual lifespan.
Why does the calculator not ask about smoking or exercise?
Adding personal factors needs risk models that we cannot verify. Talk to a doctor about how your health affects your outlook.
Where does the data come from?
The Social Security Administration's 2023 period life table, published with the 2026 Trustees Report.
What is the life expectancy in the U.S.?
In this table, at birth it is 75.79 years for males and 81.06 years for females.
Why is my expected age higher than the life expectancy at birth?
Because you have already survived the years in between, and the average only counts people who reach your age.
Sources
- Social Security Administration: Actuarial Life Table (2023 period life table, 2026 Trustees Report)
- CDC National Center for Health Statistics: Life Expectancy
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