Your calendar age is just a number. Your biological age reveals how fast you're actually aging—measured with day-level precision—and provides a personalized roadmap to reverse it.
Start Assessment $99Enter your date of birth for day-level precision
This is your starting point. Your biological age could be years different based on your health, lifestyle, and environment. Take the full assessment to discover your true age.
Real Bio Age is built on rigorous scientific methodology that separates it from generic online tests.
Your age is calculated to the exact day—not rounded years. Every answer adjusts your biological age by specific days based on research-derived impact factors.
Your ZIP code affects your biological age. We factor in air quality, pollution levels, healthcare access, and environmental risks specific to where you live.
Receive a detailed PDF report with domain-by-domain analysis, personalized improvement recommendations, and a 12-month action roadmap.
See why Real Bio Age delivers more actionable insights than any other assessment.
Every factor scientifically proven to impact biological aging, weighted by research-based contribution.
Balance, strength, mobility, falls risk, daily activity levels, and physical function capacity.
Heart rate, blood pressure, aerobic fitness, smoking status, and cardiovascular risk markers.
Diet diversity, sugar intake, gut microbiome factors, meal timing, and metabolic indicators.
Mental sharpness, memory, sleep quality and duration, and cognitive engagement activities.
Social connections, stress levels, sense of purpose, community involvement, and nature exposure.
Workout recovery speed, wound healing, immune function, and cellular regeneration capacity.
Air quality exposure, dental health, home environment quality, and pollution factors.
Self-perceived aging rate, optimism levels, subjective vitality, and self-assessed health status.
Where you live has a measurable impact on how fast you age. Real Bio Age incorporates ZIP code-level environmental data to give you the most accurate assessment possible—and shows you how relocating could change your results.
Every assessment includes a comprehensive PDF report with detailed analysis, personalized recommendations, and a clear path to improvement.
See exactly how each of the 8 health domains contributes to your biological age.
Specific, actionable advice based on your individual results and weakest areas.
Quarterly milestones and actions to systematically reduce your biological age.
Full citations to the peer-reviewed research behind every question.
Comprehensive PDF Analysis
Every question and scoring factor is derived from peer-reviewed scientific literature on longevity and biological aging.
Our methodology draws from published studies in JAMA, The Lancet, Nature Aging, and Circulation.
Scoring uses mortality hazard ratios from large-cohort epidemiological studies.
Thresholds adjust based on your age bracket. What's excellent at 60 differs from 30.
Real Bio Age comes from the same analytical mind behind some of the world's most-solved cognitive assessments.
Elite cognitive assessment and educational testing since 2015. Home of Real World IQ and Real Bio Age.
Understanding your biological age is the first step to improving it.
Full biological age analysis with all features
Track your progress over time
Join thousands who have unlocked their biological age and started their longevity journey.
Start Your Assessment $99