How Healthy Am I? — Free Health Age Calculator
Find out your biological age and health score in under 2 minutes. Answer 15 lifestyle questions about your sleep, movement, nutrition, stress, and habits — then unlock a personalized report with your 30-day improvement plan.
Answer 15 questions
Get your body age
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About You
Sleep
I get 7-9 hours of sleep most nights
I wake up feeling rested
I have a consistent sleep and wake schedule
Movement
I exercise for 30+ minutes at least 3 days a week
I avoid sitting for more than 2 hours straight
I include both cardio and strength training
Nutrition
I eat 5+ servings of fruits and vegetables daily
I limit processed food and added sugar
I eat enough protein for my body weight
Mental Health
I actively manage my stress (meditation, breathing, journaling)
I feel generally positive about my life
Recovery
I take rest days and listen to my body
I limit alcohol to 7 or fewer units per week
Habits
I don't smoke or use nicotine
I stay socially connected (friends, family, community)
I know my lab values (optional)
How We Calculate Your Health Age
The calculator evaluates six core health dimensions: sleep quality, physical movement, nutrition habits, mental wellbeing, recovery and stress management, and daily lifestyle factors like hydration, alcohol intake, and screen time. Each dimension contributes to a composite health score that is mapped against age-adjusted population benchmarks to estimate your biological age.
Sleep and movement carry a 1.5x weighting because longitudinal research consistently identifies them as the two strongest predictors of healthspan and longevity. Poor sleep alone can accelerate cellular aging by several years, while regular physical activity is associated with longer telomere length and improved cardiovascular markers — both key indicators of biological youth.
If you provide optional lab values such as resting heart rate, blood pressure, or BMI, the algorithm incorporates these as precision modifiers. Your biological age offset is calculated by comparing your weighted score to the expected score for your chronological age, then scaling the difference into years. A higher score means your body is functioning younger than your calendar age — and the category breakdown shows you exactly which areas are helping or holding you back.
Frequently Asked Questions
What is biological age?
Biological age reflects how well your body functions compared to your chronological age. Someone who exercises regularly, sleeps well, and manages stress may have a biological age years below their actual age — meaning their body performs like a younger person.
How do I calculate my body age?
Answer 15 lifestyle questions covering sleep, movement, nutrition, mental health, recovery, and daily habits. Optionally add lab values like resting heart rate or blood pressure for extra precision. The calculator weighs each factor and compares your results to age-adjusted benchmarks.
What is a good health score?
A score of 70+ is solid and means your habits are working well. Scores above 85 suggest your body is functioning significantly younger than your age. Most people land between 45 and 70 — there is almost always room to improve.
Can I lower my biological age?
Yes. Sleep quality and consistency have the fastest impact — often within 1–2 weeks. Regular exercise, better nutrition, and stress management compound over months. Studies show sustained lifestyle changes can reduce biological age markers by 3–8 years.
What habits make you age faster?
Chronic sleep deprivation, sedentary behavior, high stress, smoking, excessive alcohol, poor nutrition, and social isolation are the strongest accelerators of biological aging. Even improving one of these can shift your trajectory.
How accurate are online health age calculators?
Self-reported quizzes give a useful directional estimate — not a clinical diagnosis. For precision, lab-based biomarkers (epigenetic clocks, telomere length) are the gold standard. This calculator is designed to highlight which habits to focus on, not replace a medical assessment.
Track your progress in tr8ck
Watch your Health Age drop as you build better habits. tr8ck tracks sleep, movement, nutrition, and more — automatically.
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