BIOLOGICAL AGECALCULATOR

This calculator uses 13 key biomarkers across metabolic health, inflammation, cardiovascular function, physical fitness, and sleep quality. Each marker is scored from -2 (optimal, slows aging) to +4 (high risk, accelerates aging), then multiplied by a weight factor (0.5x to 1.5x) based on clinical relevance. The sum of all weighted impacts is added to your chronological age to estimate your biological age with approximately 70% accuracy.

Step 1: Each of the 13 biomarkers receives a category score based on whether your value falls into an optimal, normal, elevated, or high-risk range. Step 2: Each marker score is multiplied by its weight multiplier (e.g., HbA1C at 15% weight uses a 1.5x multiplier). Step 3: All weighted impacts are summed into a Total Weighted Impact. Step 4: Your Chronological Age plus the Total Weighted Impact equals your Estimated Biological Age, rounded to the nearest whole number.

These markers were chosen to cover the most clinically relevant domains of biological aging: metabolic regulation (HbA1C, fasting glucose, TG/HDL ratio), inflammation (hs-CRP, homocysteine), nutrient status (vitamin D), cardiovascular health (resting heart rate, blood pressure), body composition (waist circumference — sex-specific), functional fitness (sit-to-stand score), and recovery quality (sleep quality score). Together they provide a multidimensional view of your aging trajectory.

Each marker score ranges from -2 (optimal / slows aging) to +4 (high risk / accelerates aging). A score of 0 is neutral. The weighted impact (score × multiplier) shows how much each marker contributes to your biological age in years. For example, an HbA1C of 6.5% (score +4) with a 1.5x multiplier adds +6 years to your biological age.

Waist circumference uses sex-specific thresholds because healthy body composition targets differ between males and females. Blood pressure considers both systolic and diastolic values together — the most unfavorable reading determines the category. For example, if systolic is elevated (130–139) but diastolic is normal, the marker scores as elevated (+2).

This is a weighted composite scoring system based on functional medicine ranges and clinical interpretation patterns. It is designed to be educational and directional, providing an approximate 70% accuracy estimate. It is not a validated clinical diagnostic tool and should never replace professional medical advice. For a comprehensive assessment with up to 90% accuracy, consult a healthcare provider and complete a full biomarker panel.