Review of the Living to 100 Life Expectancy Calculator

The Calculator Sponsored by the Doctor Behind the Largest Centenarian Study

mature woman at home using computer
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What are your chances of living to 100 years old? Short of having a crystal ball, it is not possible to know exactly how long you will live, but that doesn't mean that you can't make an educated guess. There is quite a lot of research and statistical data about life expectancy and the factors that impact it, some of which goes into the making of online longevity calculators like the Living to 100 Life Expectancy Calculator.

In order to evaluate the Living to 100 Life Expectancy Calculator, I had a friend use several online longevity calculators using real personal information. Here is what we found.

A Glimpse at the Live to 100 Life Expectancy Calculator

This life expectancy calculator can be found on the Live to 100 website, which is run by Dr. Thomas Perls, the director of the New England Centenarian Study. The study at University of Boston's School of Medicine boasts that it is the largest ongoing study of centenarians and their families in the world. If we are to apply what is learned from the longevity of the world's oldest people to our own understanding of life expectancy factors, then the Live to 100 Life Expectancy Calculator should be a great tool.

The calculator tool consists of 40 straightforward and quick questions related to your personal health history and that of your family. In addition to a life expectancy score, the calculator promises to provide personalized feedback for your answers, a "to do" list, recommendations for lifestyle changes, and an estimate ow how many years you can look forward to adding to your life expectancy should you make some of the changes.

Fast Facts: Pros and Cons of the Calculator

Like all resources, this life expectancy calculator comes with its advantages and disadvantages. Let's take a look at the primary pros and cons:


  • Easy to use
  • Straightforward questions with multiple answers
  • Easy-to-understand results page


  • Requires an email address to get to the results page
  • Too many ads
  • Page doesn't always format correctly
  • Too few links for additional information on results page 

Expert Review of the Calculator

If you have never taken a longevity test or used a longevity calculator before, the Live to 100 calculator has all the basics covered. I asked a friend to take this (and several other longevity tests) to compare the results. From this calculator, my friend received a life expectancy calculation of 84 years with the possibility of adding 12.5 extra years if certain behaviors were followed.

The recommendations he received on his results page included:

  • Exercise more to increase life expectancy by 5 years
  • Take a daily aspirin for 2 more years of life
  • Cut back one day of work for 2 more years of life
  • Floss daily for 1 more year of life

Most of these are pretty good suggestions, though it is not clear where they all come from. One suggestion was to cut back on coffee (he entered 1-2 cups a day). This suggestion doesn't really pan out in research with some recent studies show that caffeine at this amount may be good for you.

When you click on "About the Calculator" you find out that Dr. Perls' Longevity Calculator is available for licensing, but you do not find any information about the research behind (only that Dr. Perls is head of the New England Centenarian Study).

I think the most disappointing thing about this longevity calculator is the lack of links from the results page. One of the suggestions for my friend was to "lower blood pressure." That's it - just "lower blood pressure" with no links or suggestions on who to approach that suggestion.

The Bottom Line

Overall, this calculator is worth the 5 minutes it will take you to complete it. Though the test requires an email address, you can opt out of receiving newsletters and following up emails. The test seems comparable in accuracy, but simply lacks follow-up from the results page requiring that you do your own research.

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