How long will you live?
Take the free 2-minute assessment to find out.
Our methodology is built on CDC life tables and peer-reviewed research covering 40M+ participants.
Take Assessment →No email or credit card · Answers never sold or shared
01 Measure
This is what you get for free.
Your estimated lifespan, biological age, potential years within reach, biggest lever, and a library of science-backed ways to live longer.
The road ahead
Biggest lever
+1.2 years on the table
02 Learn
This is what you get for $19.
Your personalized Longlevity Report explains what your results mean, ranks every lever by the years it’s worth, projects your next ten years, and ends with the exact moves to make first.
Stripe · One-time · 30-day money-back guarantee
See an example →03 Share
Longevity is better together.
Share and compare with the people you love. See how much time you have left together, then add to it.
Example shareable image
It’s not about more years.
It’s about more healthy years.
It starts with two numbers.
Take Assessment →Questions, answered.
Is it really free?
The assessment and your numbers are free, always: your estimated lifespan, your biological age, your #1 lever with its real number, the full 160+ habit library, unlimited re-measures, sharing, and comparing. No card required. The full report (your longevity archetype, every lever ranked with its years, your per-habit breakdown, your ten-year projection, and your prioritized next moves) is an optional one-time $19 purchase.
How accurate is it?
It’s a statistical estimate, not a prediction of your actual lifespan. It’s built on CDC life tables and peer-reviewed research covering 40M+ participants, with every health claim cited and evidence-graded. We don’t inflate the numbers. Honest accuracy is the whole point, and it keeps improving: we review new longevity research every month and recalibrate when the evidence warrants, with every change versioned on the methodology page.
How long does it take?
About 2 minutes. Eleven quick questions, with your lifespan and biological age updating live as you answer. No account needed to get your result.
Do you sell my data?
Never. We make our money from you, not your data. That’s how the free experience stays free for everyone.