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March 26, 2025 • 10 minutes
Updated April 2026 with current SSA life expectancy data.
Nobody really wants to think about how long they’ll live. It’s a weighty question that can feel both too important and too unknowable. But it’s also a retirement planning variable you can get a handle on if you use the right tools.
The best life expectancy calculators go beyond age and gender. They factor in your health history, lifestyle habits, and family background to give you an estimate that means something for planning. This is a detailed comparison of seven general-use life expectancy calculators, plus a list of six medical-specific ones that focus on specific health conditions.
The SSA Actuarial Life Table, which is based on 2022 mortality data used in the 2025 Trustees Report, puts life expectancy for a 65-year-old at roughly 82.5 for men and 85 for women. The 2025 Trustees Report also includes projected life expectancy figures through 2024, which show upward improvement. Those SSA projections aren’t finalized actuarial data, but they reflect the current direction.
At least half of Americans live longer than the median figures, often by a wide margin. There’s a compounding effect worth knowing: the longer you live, the longer you’re likely to keep living. An 85-year-old man can expect to live past 90, on average. That dynamic is one of the core reasons longevity planning needs to account for a range of outcomes.
Older Americans are also living more active lives than previous generations, which affects both spending patterns and healthcare costs across a longer retirement.
The tools below are organized roughly by depth of inputs: how many personal factors they incorporate and how specific their outputs are. More inputs generally means a more individualized estimate.
Built on the New England Centenarian Study, the world’s largest longevity research project, the Living to 100 calculator asks nearly 50 questions across health, lifestyle, and family history. What sets it apart is the personalized feedback: for each data point, it explains why that factor affects longevity. You get a number and a detailed breakdown of what’s driving it.
Best for: People who want the most thorough estimate and are willing to spend 10–15 minutes on the assessment.
Built on research into the world’s longest-lived populations, the Blue Zones True Vitality Test incorporates lifestyle factors specific to communities where high percentages of people live past 90. It blends demographic inputs with questions about purpose, community, and diet.
Best for: People interested in how environment and social factors shape longevity alongside genetics and medical history.
Developed by Dean Foster of the Wharton School using NIH-AARP statistical data, the Blueprint Income calculator produces probabilistic outputs instead of a single point estimate. You see a range of likely outcomes with associated probabilities.
Best for: People who want a statistically grounded estimate without a lengthy questionnaire.
The LifeSpan Calculator updates your estimated life expectancy in real time as you answer each of its 14 questions. The live feedback shows exactly how smoking, exercise, weight, and other factors shift your number.
Best for: People who want to see how specific lifestyle behaviors affect longevity.
The John Hancock Life Expectancy Calculator incorporates clinical inputs like blood pressure and cholesterol readings alongside standard demographic and lifestyle questions, making it one of the more medically grounded general-population tools.
Best for: People who have recent health screening data and want it to factor into their estimate.
Project Big Life’s calculator asks specific questions about different types of physical activity and weekly fruit and vegetable intake, going beyond general exercise and diet habits to ask how much and what kind.
Best for: People who track their lifestyle in detail and want those specifics to move the needle.
UConn’s Health Life Expectancy Calculator is a 15-question tool that outputs two numbers most tools skip: total life expectancy and predicted healthy years. It also tells you whether you’re above or below average. The healthy-years distinction is useful for estimating active retirement costs against later-phase healthcare costs.
Best for: People who want a quick estimate with a clear signal on how many of those years are likely to be healthy ones.
If you have a specific health condition, condition-specific tools can incorporate that data more precisely. Most are designed for clinical use, but the following are accessible:
These don’t replace a clinical evaluation. They’re useful for understanding probabilistic risk, not for generating a retirement planning number on their own.
Living to 100 and the Blue Zones True Vitality Test are the most thorough general-use tools, because they ask detailed questions about health history, lifestyle, and family background. The Wharton calculator (Blueprint Income) is the most statistically rigorous in how it handles uncertainty: it produces a probability range rather than a single estimate. For most people, Living to 100 is the best place to start. It asks the most questions, draws on the most rigorous longevity research, and gives you a detailed breakdown of what’s actually driving your estimate, not just a number.
No calculator claims perfect accuracy. The SSA Actuarial Life Table is the most widely used baseline for population-level planning, but it only accounts for age and gender. The tools above incorporate individual health and lifestyle factors that population averages can’t capture.
Running two or three of these tools and comparing where they agree gives you a more defensible baseline than relying on any one of them.
Most retirement calculators use a single life expectancy assumption: often the SSA median for your age and gender. Knowing what that assumption is, and whether it reflects your actual situation, matters more than most people realize. The Boldin Planner lets you set your own goal age and model different longevity scenarios side by side, so you can see what changes if you live to 85 versus 95.
Running a Monte Carlo simulation against those scenarios turns a single projection into a probability, which shows how your plan holds up when things don’t go to plan.
Build a plan around a conservative life expectancy (say, 85) and an extended one at 95 or 100. The gap between those two plans tells you how much flexibility you have and where the real risk sits.
The most direct way to reduce longevity risk is income that can’t run out. Social Security does that: because the benefit lasts as long as you do, delaying your claim to maximize the monthly amount is worth modeling carefully. Lifetime annuities can serve the same function if a guaranteed income floor is part of your plan. It’s also worth factoring in healthcare costs, which rise meaningfully in later retirement phases and are one of the more common reasons people find themselves running short.
Longevity estimates should shift as your health situation changes. Checking in annually keeps your retirement picture calibrated, and any significant health development is worth running through the numbers again.
Life expectancy calculators ask questions about your age, health habits, and family history, and run your answers against mortality data from large studies. They map your profile to similar profiles and provide a probability spread of likely lifespans weighted by how your particular combination of factors has played out historically.
The most accurate life expectancy calculators for general use are Living to 100, Blue Zones True Vitality Test, and Blueprint Income from Wharton. Living to 100 draws on the New England Centenarian Study; the Wharton tool uses NIH-AARP statistical data. Tools that ask more about health history, lifestyle, and family background can produce more individualized estimates.
Average life expectancy for a 65-year-old American is roughly 82.5 for men and 85 for women (SSA Actuarial Life Table). But at least half will live longer than those figures, some by decades. A life expectancy calculator can provide a more individualized estimate based on your specific health profile.
A personal life expectancy estimate depends on your age, health, family history, and daily habits. Life expectancy calculators factor different combinations of those factors. Running two or three of them and noting where the outputs converge gives you a more reliable baseline than any single tool.
Most retirement plans use a default life expectancy assumption, often the SSA median for your age. If you’re likely to live longer than average because of your family history or health, that assumption can leave a meaningful gap in your plan. Using a life expectancy calculator that accounts for your personal details gives you a more defensible baseline to plan from.
Several general-use tools incorporate medical history inputs: Living to 100 asks nearly 50 questions covering health conditions, family history, and lifestyle; John Hancock includes clinical inputs like blood pressure and cholesterol readings; and the Project Big Life calculator asks detailed questions about physical activity and diet. For people with specific conditions, dedicated clinical tools go further. Options include the Seattle Heart Failure Model, the Breast Cancer Risk Assessment Tool from the National Cancer Institute, and the CDC’s Pre-Diabetes Risk Assessment among them.
U.S. life expectancy fell sharply during the COVID-19 pandemic, then rebounded. According to the CDC’s NCHS Data Brief 548, published January 2026, life expectancy at birth reached 79 years in 2024, an all-time high that fully surpasses the pre-pandemic peak.
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