Biological Age Calculator
Estimate how fast your body is aging based on lifestyle, health metrics, and habits. Answer 12 science-backed questions to discover your biological age.
Research-backed
Questions based on epidemiological studies linking lifestyle to biological aging.
Private & instant
No data stored. Results calculated entirely in your browser.
Not a clinical test
For a validated assessment, consult a provider about epigenetic testing.
How biological age works
Your chronological ageis how many years you've been alive. Your biological age reflects how well your body is functioning relative to your calendar age — influenced by lifestyle, environment, genetics, and health behaviors.
Clinical biological age tests(like GrimAge, PhenoAge, and Horvath's clock) measure DNA methylation patterns through bloodwork. These epigenetic clocks are the gold standard for biological age assessment.
This toolprovides a directional estimate based on modifiable lifestyle factors that research has linked to accelerated or decelerated aging. It's useful for identifying areas where changes could meaningfully impact your healthspan.
What you can change: Studies consistently show that regular exercise, quality sleep, stress management, strong social connections, and a whole-foods diet are the highest-impact levers for reducing biological age.