Introduction
Your biological age tells you how old your body really is. It can be higher or lower than the number of years you have been alive, which is called your chronological age. Things like diet, exercise, stress, sleep, and blood test results all play a role in how fast or slow your body ages.
This biological age calculator uses three modules to measure your body's true age. Module A looks at your lifestyle, health habits, nutrition, and mental well-being through a simple questionnaire. Module B tests your physical fitness with up to six real-world tasks like push-ups, balance, and reaction time. Module C uses nine common blood test values to calculate your Levine Phenotypic Age, a method published in peer-reviewed research.
You can complete one module or all three. The more you fill in, the more accurate your result will be. Each module gives its own score, and the calculator combines them into one composite biological age. You will also see a color-coded gauge, a radar chart of your health strengths, a category-by-category breakdown, and a full step-by-step walkthrough of the biomarker math. All results update instantly on screen.
Start by entering your date of birth and gender in the Global Settings section, then work through each module at your own pace.
How to Use Our Biological Age Calculator
This calculator finds your biological age — how old your body really is — based on your lifestyle, physical fitness, and blood test results. Enter your personal details, answer health questions, and complete optional fitness and lab sections. You will get a biological age score, charts, and a full breakdown of what helps or hurts your results.
Global Settings
Date of Birth: Pick your birth date from the calendar. The calculator uses this to find your chronological age (your age in years).
Gender: Choose Male or Female. This changes some health benchmarks and shows or hides the women's health section.
Measurement Units: Pick Imperial (inches, pounds) or Metric (centimeters, kilograms). All measurement fields will update when you switch.
Module A — Lifestyle and Health Assessment
Category 1: Personal Aspects
Race / Ethnicity: Select the group that best fits you. This sets a baseline life expectancy.
Family Longevity: Pick how long most of your close relatives have lived. Longer-lived families add years in your favor.
Education Level: Choose your highest level of schooling. Higher education is linked to longer life.
Nightly Sleep: Select how many hours you sleep on a typical night. Seven to eight hours is best.
Category 2: Heart Disease Risk
Cholesterol: Pick the range that matches your total cholesterol in mg/dL. You can find this on a recent blood test.
Blood Pressure: Choose the range closest to your last blood pressure reading in mmHg.
Smoking Status: Select whether you smoke now, quit in the past, or have never smoked.
Family Heart Disease: Pick whether close relatives had heart disease and at what age.
Waist Circumference: Type the distance around your waist at the belly button in inches or centimeters.
Hip Circumference: Type the distance around the widest part of your hips. The calculator uses your waist and hip numbers to find your waist-to-hip ratio.
Stress Level: Choose how much stress you feel on most days.
Physical Activity: Pick how often and how long you exercise each week.
Category 3: Medical Aspects
Preventive Care: Select how often you see a doctor for checkups.
Heart Health: Choose the option that best describes any heart problems or symptoms you have.
Lung Health: Pick the option that matches your breathing and lung health.
Digestive Health: Select how often you have stomach or gut problems.
Diabetes: Choose whether you have diabetes, are pre-diabetic, or have no issues.
Daily Medications / Drug Use: Pick how many prescription medicines you take each day, or if you use any drugs.
Category 4: Women's Health
Gynecological and Breast Health: This field only shows for females. Select how current your screenings are and if you have any conditions.
Hormonal Contraceptive Use: This field only shows for females. Pick whether you use hormonal birth control and any related risk factors.
Category 5: Nutrition
Breakfast Habits: Choose how often you eat a healthy breakfast.
Meal Regularity: Select how steady and balanced your daily meals are.
Fruit and Vegetable Intake: Pick how many servings of fruits and vegetables you eat each day.
Dietary Fat Type: Choose the kind of fat you eat most — healthy fats, mixed, or fried and processed.
Refined Sugar / Processed Food: Select how much sugar and processed food you eat.
Alcohol Intake: Pick how many alcoholic drinks you have per day.
Category 6: Psychological Well-Being
General Happiness: Choose how happy you feel most of the time.
Depression: Select whether you have any history of depression, personal or in your family.
Anxiety: Pick how often you feel anxious or have panic attacks.
Ability to Relax: Choose how easy it is for you to unwind and relax.
Relationship Status: Select your current relationship status and how happy you are in it.
Work / Purpose: Pick how fulfilled or satisfied you feel about your work or daily purpose.
Social Connectedness: Choose how many close friends you have and how active your social life is.
Category 7: Safety and Risk Behaviors
Annual Driving Miles: Select how many miles you drive each year.
Seatbelt Usage: Pick how often you wear a seatbelt.
Risk-Taking Activities: Choose how often you do high-risk activities like extreme sports.
Module B — Physical Performance Battery
This section has six optional fitness tests. You can do any number of them. Click each tab to open a test. The more tests you finish, the more accurate your result.
Push-Ups: Type how many full push-ups you can do in a row without stopping.
Sit-Rise Test Score: Enter your score from 0 to 10. Start at 10 and subtract points each time you use a hand, knee, or forearm for support when sitting down and standing back up.
Sit-and-Reach Distance: Type how far past your toes you can reach while seated with legs straight. Use a negative number if you cannot reach your toes.
One-Leg Balance: Enter how many seconds you can stand on one leg with your eyes closed and hands on your hips.
Reaction Time: Type your average reaction time in milliseconds. Use an online click test or the ruler-drop chart shown on screen.
Waist Circumference (Body Ratio): Type your waist measurement. This may differ from the one in Module A if you want to enter it fresh.
Height (Body Ratio): Type your height. The calculator divides your waist by your height to get your waist-to-height ratio.
Module C — Blood Biomarker Analysis
This section uses the Levine Phenotypic Age formula. You need results from a recent blood test. Enter all nine lab values to get a result.
Date of Birth: This auto-fills from your global setting. Change it here if your blood test was from a different time.
Date of Blood Test: Pick the date your blood was drawn. This must be after your date of birth.
Albumin: Enter your albumin level in g/dL. The normal range is 3.5 to 5.0.
Creatinine: Enter your creatinine level in mg/dL. The normal range is 0.6 to 1.2.
Glucose: Enter your fasting glucose in mg/dL. The normal range is 70 to 99.
C-Reactive Protein (CRP): Enter your CRP level in mg/L. A normal value is below 3.0.
Lymphocyte Percentage: Enter your lymphocyte percentage from a complete blood count. The normal range is 20% to 40%.
Mean Cell Volume (MCV): Enter your MCV in fL. The normal range is 80 to 100.
Red Cell Distribution Width (RDW): Enter your RDW as a percentage. The normal range is 11.5% to 14.5%.
Alkaline Phosphatase: Enter your alkaline phosphatase in U/L. The normal range is 44 to 147.
White Blood Cells (WBC): Enter your white blood cell count in thousands per microliter. The normal range is 4.5 to 11.0.
Getting Your Results
Calculate Button: Press this button to run all three modules and see your full results. The tool also updates live as you change inputs.
Reset Button: Press this button to set every field back to its starting value.
The results panel shows your composite biological age, a color-coded gauge, a bar chart comparing each module, a category score breakdown for Module A, a radar chart of your health strengths, and a step-by-step math walkthrough for the Levine Phenotypic Age formula in Module C.
What Is Biological Age?
Your chronological age is how many years you have been alive. Your biological age is how old your body actually acts. Two people who are both 40 years old can have very different bodies. One may have the heart, lungs, and strength of a 35-year-old. The other may have the health of a 50-year-old. The difference comes down to habits, genetics, fitness, and what is happening inside your blood.
How This Calculator Works
This tool estimates your biological age using three separate methods:
- Module A — Lifestyle & Health Assessment: A questionnaire that looks at your sleep, diet, exercise, stress, medical history, safety habits, and mental well-being. Each answer adds or subtracts years from your chronological age.
- Module B — Physical Performance: Six body tests — push-ups, flexibility, balance, reaction time, and more. Your results are compared to what is normal for your age and gender. Better scores mean a younger body.
- Module C — Blood Biomarkers: This uses the Levine Phenotypic Age formula from a 2018 study in the journal Aging. It takes nine common blood test values and turns them into a single biological age number. This is the most science-backed method of the three.
You can use one module, two, or all three. When you complete more than one, the calculator averages them together to give you a composite biological age.
Why Biological Age Matters
Biological age is a better predictor of health and lifespan than chronological age alone. A lower biological age means your body is aging slower than average. A higher one is a warning sign. The good news is that biological age can change. Better sleep, regular exercise, a cleaner diet, less stress, and quitting smoking can all bring the number down over time.
This calculator is for educational purposes only and is not a medical diagnosis. Always talk to your doctor about your health and lab results.