Biological age reflects the functional state of your body using blood biomarkers — it can be younger or older than your birth year. This tool uses the 9 biomarkers from the Levine PhenoAge framework to assess each value against longevity-optimized ranges, giving you a practical snapshot of where your biology stands.
Enter Your Biomarkers
Optimal: 4.0–5.0
Optimal (F): 0.5–0.9 | (M): 0.7–1.1
Optimal: 70–85 (fasting)
Optimal: <1.0 (low inflammation)
Optimal: 25–40%
Optimal: 80–92
Optimal (F): 4.0–5.0 | (M): 4.5–5.5
Optimal: 30–70
Optimal: 3.5–7.0
Biomarker Analysis
How to Use the Biological Age Estimator
The biological age estimator uses nine clinically validated blood biomarkers from the Levine PhenoAge framework — a research tool that consistently outperforms chronological age for predicting all-cause mortality. Rather than computing a single number, this version shows each biomarker's status relative to longevity-optimized ranges so you can identify specific areas to improve.
Step 1: Get Your Lab Results
Request a Comprehensive Metabolic Panel (CMP) and Complete Blood Count (CBC) from your doctor at your next annual physical. CMP covers albumin, creatinine, glucose, and ALP. CBC covers lymphocyte %, MCV, RBC, and WBC. CRP (C-reactive protein) requires a separate order — ask specifically for high-sensitivity CRP (hsCRP).
Step 2: Enter All Nine Values
Enter each value from your lab report in the units shown. Most US labs use mg/dL for glucose and creatinine, g/dL for albumin, and fL for MCV. Enter the most recent fasting values for glucose for the most meaningful result.
Step 3: Interpret the Results
Each biomarker is shown as optimal (green), borderline (yellow), or concerning (red) based on longevity research ranges — which are often narrower than standard clinical normal ranges. A result within normal clinical range can still appear borderline here if it's at the outer edge of what longevity research identifies as optimal.
What the Composite Score Means
The composite indicator reflects how many of your markers fall in optimal vs borderline vs concerning ranges. Having most markers optimal (green) suggests your biological age is likely lower than your chronological age. Multiple concerning markers may warrant a conversation with your physician about specific interventions.
FAQ
Is this biological age estimator free?
Yes, completely free with no signup required. All calculations run in your browser.
What is biological age vs chronological age?
Chronological age is simply how old you are by years. Biological age reflects the functional state of your body based on physiological markers — cells and organs can be older or younger than your birth year suggests. People with younger biological ages tend to have lower rates of age-related disease and mortality.
What is Levine PhenoAge?
PhenoAge is a biological age algorithm developed by Dr. Morgan Levine at Yale. It uses 9 clinical blood biomarkers (albumin, creatinine, glucose, CRP, lymphocyte %, MCV, RBC, ALP, WBC) to calculate a composite biological age score. Studies show PhenoAge is a better predictor of all-cause mortality than chronological age.
How do I get these biomarkers tested?
Most are included in a standard Comprehensive Metabolic Panel (CMP) plus Complete Blood Count (CBC). Ask your doctor to order these at your next annual physical, or use a direct-to-consumer lab service. CRP typically requires a separate high-sensitivity CRP (hsCRP) order.
What does 'out of optimal range' mean?
The optimal ranges shown are based on longevity research, not just standard clinical ranges. A value may be within normal clinical limits but still not in the range associated with lowest mortality risk. For example, glucose in the 70–85 mg/dL range is associated with lower mortality than the upper end of the normal range (99 mg/dL).
Can I improve my biomarkers?
Many of these markers are significantly modifiable. Exercise, diet quality, sleep, and stress reduction affect albumin, glucose, CRP, WBC, and RBC. Creatinine is influenced by muscle mass and hydration. Work with a physician to understand which of your specific values are targets for intervention.