CheckBioAge is a free tool that lets anyone estimate their biological age using the scientifically validated formula developed by Dr. Morgan Levine and her team at Yale University.
I built CheckBioAge out of a personal interest in longevity and preventive health. After coming across the Levine phenotypic age formula, I wanted a simple tool to estimate my own biological age from my blood test results — without signing up, without paying, and without uploading my data anywhere.
All calculations happen in your browser. Your health data never leaves your device.
Based on peer-reviewed research published in the journal Aging (Levine et al., 2018).
No sign-up, no paywall, no hidden fees. The calculator will always be free to use.