How old is your body really?
Your passport says one age. Your body may tell a different story. Find your biological age in about 60 seconds.
Check my body ageHow the body age test works
Three steps. No blood test, no account, nothing to install.
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Answer simple questions
Your age, daily habits, health checks and how you feel. Tap to answer.
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We weigh each habit
Each answer adds or takes off years, based on longevity research.
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See your body age
Get your score, what is helping, what is hurting and what to change first.
Body age assessment
Answer as honestly as you can. Not sure about something? Choose "Not sure" and we'll still give you a score.
Your result
Taking years off
Adding years
Your next best steps
Free guide: 7 proven ways to lower your biological age
Simple, research-backed habits you can start this week. No gym membership needed.
A one-page plan covering movement, strength, sleep, food, alcohol, health checks and connection.
Learn about healthy ageing
Plain-English answers to the questions people search for most.
What is biological age?
Your chronological age is how many birthdays you've had. Your biological age is how old your body behaves: your heart, muscles, blood vessels and cells.
Scientists measure it in the lab with blood markers and "epigenetic clocks" that read chemical tags on your DNA. This calculator gives a simpler estimate using the lifestyle factors most strongly linked to how long and how well people live.
Body age vs real age
Two people born the same year can age very differently. A 65-year-old who walks daily, sleeps well and stays connected may have the body of someone in their fifties.
The gap between the two numbers is the useful part. Unlike your birth date, your body age can move, and it can move in your favour.
How to lower your biological age
The biggest levers are well known: don't smoke, move every day, build strength twice a week, sleep seven to eight hours, eat mostly plants, keep alcohol low, and know your blood pressure and cholesterol numbers.
Mind matters too. Managing stress, staying socially connected and having a sense of purpose are all linked with longer, healthier lives. Start with one change, not seven.
Can exercise reverse ageing?
Exercise can't change your birth date, but it is the closest thing we have to an anti-ageing treatment. Regular activity is linked to lower risk of heart disease, diabetes, dementia and early death.
Health guidelines suggest about 150 minutes of moderate activity a week plus strength work on two days. It is never too late: people in their seventies and eighties still gain strength and balance when they start training.
How sleep affects ageing
Sleep is when your body repairs itself and your brain clears waste. Most adults need seven to nine hours; older adults generally do best with seven to eight.
Regularly sleeping less than six hours is linked with higher blood pressure, weight gain and poorer memory. A steady bedtime, morning daylight and a cool, dark room all help.
Best foods for longevity
The world's longest-lived communities eat in a similar way: plenty of vegetables, beans and lentils, whole grains, nuts, olive oil and fish, with little processed food or sugar. This is close to the Mediterranean diet.
An easy rule: fill half your plate with vegetables at lunch and dinner, and swap one meat meal a week for beans.
Questions people ask
Is the body age test a medical test?
No. It is an educational estimate based on lifestyle factors linked to longevity research. It does not diagnose anything. Talk to your doctor about your health.
How accurate is a biological age calculator?
Lifestyle calculators give a rough guide, not a lab measurement. They are most useful for spotting which habits matter most for you and tracking change over time.
Is my information stored?
Your answers are scored in your browser. A short history of your results is kept on your own device so you can track progress.
How often should I retake the test?
Every three months is a good rhythm. That gives new habits time to show up in your score.