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How old is your body, really?

Your calendar age is just a number. Your biological age reveals how well your body is actually aging — and what you can do about it.

Estimate your biological age range

How it works

1
Upload blood test
Enter 9 standard lab values from any blood test. No special tests needed.
2
Get your PhenoAge
Our algorithm calculates your biological age using the validated PhenoAge formula.
3
Track over time
See how your biological age changes with diet, exercise, and FMD cycling.

The science behind your score

PhenoAge was developed by Dr. Morgan Levine at Yale and published in the journal Agingin 2018. It uses 9 standard blood biomarkers to estimate your body's biological age — the age your blood chemistry suggests, not your calendar age.

Research shows FMD cycling reduced PhenoAge by 2.5 years in just 4 months (Brandhorst et al. 2024, Nature Communications). That's the most significant biological age reversal demonstrated in a randomized controlled trial.

Start tracking your biological age

$4.99/month
  • Unlimited blood test uploads
  • PhenoAge biological age calculation
  • Population comparison (NHANES data)
  • Biomarker tracking over time
  • Longeva AI — your longevity companion
  • Personalized nutrition guidance
Create Free Account
Free to start. Subscription required for full tracking features.