PhenoAge · Levine et al. 2018
PhenoAge Calculator
Enter nine routine blood markers and your age to estimate your biological age. The full calculation runs in your browser — your numbers never leave this page.
Your blood markers
From a recent lab panel
Units
Your PhenoAge
—years
Fill in your age and the nine markers to see your estimated biological age. Values update as you type.
Educational estimate only — not medical advice. A single result can be skewed by acute illness; track the trend across tests.
The method
PhenoAge (Levine et al., 2018) fits a mortality model to nine clinical markers plus age, then re-expresses the risk as an equivalent chronological age.
Why it stays private
Every calculation happens in your browser using JavaScript. Nothing you enter is transmitted or stored on a server; refreshing the page clears it.
Want it tracked?
Verith for iPhone recalculates PhenoAge automatically with every new lab import and plots the trend over time. See the app →