PhenoAge calculator
PhenoAge converts nine routine blood markers plus your age into a single figure on an age scale, using the model published by Levine and colleagues in 2018. It was developed to predict mortality risk across a population — which is the key to reading it sensibly.
What this can show
How your blood-marker profile compares with population averages for your age, expressed on an age scale.
What this cannot show
How long you will live, whether you have a disease, or the effect of any supplement or intervention. A single blood draw is affected by recent illness, hydration and exercise.
Method and source
The implementation follows the published equation exactly: a weighted linear combination of the nine markers and chronological age, converted through a Gompertz mortality model onto an age scale.
One implementation detail is worth stating, because published summaries disagree about it. The coefficients require SI units — albumin in g/L, creatinine in µmol/L, glucose in mmol/L and CRP in mg/dL. Entering US conventional units produces a mathematically invalid result rather than a merely inaccurate one, so this calculator validates the range of every field and refuses values that look like the wrong unit.
Your privacy
The values you type are used only by your own browser to compute the result. They are never transmitted to us, never stored, and never placed in the page address — so a shared or printed result cannot leak them. Closing or resetting the page discards them entirely.
This tool is educational. It does not diagnose and does not predict any individual’s lifespan. See the medical disclaimer.