Biological age calculator
Your biological age reflects how young your body and habits really are, beyond your date of birth. This free test estimates it in two minutes from ten factors with solid longevity evidence — sleep, physical activity, smoking, alcohol, resting heart rate, waist, diet, stress and relationships — and shows the concrete levers to lower it.
Biological age and healthspan: why they matter more than your birthday
Chronological age counts years since birth; biological age estimates how young your systems really are — heart, metabolism, sleep, recovery. It's the lens of longevity research because it predicts chronic-disease risk better than a birth date alone, and, crucially, much of it is modifiable through everyday habits.
Which factors move your biological age
The calculator weighs ten factors with solid epidemiological evidence: sleep quality and duration, physical activity, smoking, alcohol, resting heart rate, waist-to-height ratio, diet, chronic stress, social relationships and self-rated health. Each shifts the estimate by a number of years calibrated on scientific literature, so the result stays credible and transparent.
How to lower your biological age
The encouraging part is that biological age is largely reversible. Better sleep, regular movement, a whole-food diet, less alcohol and no smoking, and strong relationships can cut the estimate by several years. At the end of the test you get your top three levers and a "what-if" tool that shows, in real time, the years you could win back.
FAQ
How is biological age calculated?
It starts from your chronological age and adjusts it using lifestyle factors with epidemiological evidence on longevity (sleep, movement, smoking, alcohol, resting heart rate, waist-to-height ratio, diet, stress, relationships and self-rated health). Each factor shifts the estimate by a number of years calibrated on scientific literature.
Is the biological age calculator free?
Yes, the test is completely free, requires no sign-up, and all calculations happen right in your browser.
Is it a medical diagnosis?
No. Clinical biological age is measured with epigenetic clocks (DNA methylation) and blood biomarkers. This is an educational, motivational tool: an honest lifestyle estimate, not a medical report.
Can I lower my biological age?
Often yes — it's the most reversible part of the story. Improving sleep, movement, diet and quitting smoking can cut the estimate by several years. The test shows your top three levers.