Your chronological age is just a number. Your biological age reveals how fast you're actually aging — and what you can do to slow it.
Built on the PhenoAge algorithm (Levine et al., Aging, 2018) — validated on 11,000+ NHANES participants.
Get these values from a standard blood panel. See recommended lab tests →
Blood sugar after fasting 8+ hours
Inflammation marker
Liver & nutrition marker
Kidney function marker
Uses population averages for the remaining 5 fields
Lymphocyte % (%)
Immune cell percentage
MCV (fL)
Mean corpuscular volume — red blood cell size
RDW (%)
Red cell distribution width — variation in RBC size
White Blood Cell Count (K/μL)
Total immune cell count
Unlock for full precision
Adds immune + red blood cell aging signals — included free during beta. Create an account to access all 9 biomarkers.
Alkaline Phosphatase (U/L)
Liver & bone health marker
Unlock for full precision
Adds hepatic aging signal — included free during beta. Create an account to access all 9 biomarkers.
Result uses 4 biomarkers + population averages for the rest. Create a free account to unlock all 9 for a more precise score.
How accurate is this?
PhenoAge was developed by Dr. Morgan Levine at Yale and validated on over 11,000 participants in the NHANES dataset. It predicts 10-year mortality risk more accurately than chronological age alone — and the 4-biomarker version uses population averages for the remaining 5 fields, so it's directionally accurate but less precise than the full 9-biomarker score. For the most reliable result, enter all 9 values from a standard blood panel.
Sample Result — what your report looks like
Biological Age
46
↑ 3 years older
Chronological Age
43
your calendar age
Your metabolic and inflammation markers are running ahead of your calendar age — likely driven by fasting glucose and hsCRP. The good news: both respond quickly to targeted lifestyle changes.
Full report includes personalized action steps ranked by impact, trend tracking, and peer comparison.
Built on PhenoAge (Levine et al., Aging, 2018) — validated on 11,000+ NHANES participants and published in peer-reviewed journals.
Unlike chronological age, biological age predicts mortality risk, disease onset, and functional decline with far greater accuracy.
A 2021 pilot study (Fitzgerald et al., Aging) found participants on a structured diet, sleep, exercise, and supplementation protocol reduced biological age by an average of 3.23 years over 8 weeks. Individual results vary.
Eumaia gives you a full longevity dashboard — track biomarkers over time, run simulations, and get AI-powered protocols informed by leading longevity research.
Start FreeThis calculator provides an educational estimate only and is not a medical diagnosis, clinical test, or substitute for professional medical advice. Results are based on population-level research and may not apply to every individual. Always consult a qualified healthcare provider before making health decisions.