Biological Age Estimator
Find out if your body is aging faster or slower than your calendar age based on 10 key lifestyle factors.
Basic Info
Body & Nutrition
Frequently Asked Questions
What is biological age?
Biological age measures how old your body actually is based on lifestyle, fitness, and health markers — as opposed to your chronological (calendar) age. Two people born the same year can have very different biological ages depending on their habits.
How accurate is a biological age calculator?
Online calculators provide an estimate based on population-level research. For clinical accuracy, blood biomarker tests (e.g. DNA methylation) are more precise. However, lifestyle-based calculators reliably identify which health domains need attention.
Can I reverse my biological age?
Yes. Studies show that improving sleep, exercise, nutrition, and stress management can reduce biological age by 1–3 years within months. The most impactful changes are consistent exercise (3–5x/week) and quality sleep (7–9 hours).
What factors affect biological age the most?
The top factors are: cardiovascular fitness (resting heart rate, VO2max), sleep quality, body composition (BMI, body fat), stress levels, nutrition, smoking, and alcohol consumption.
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References
- • Zhang D, Shen X, Qi X (2016). “Resting heart rate and all-cause and cardiovascular mortality.” CMAJ, 188(3):E53-E63. PubMed
- • Hirshkowitz M et al. (2015). “National Sleep Foundation's sleep duration recommendations.” Sleep Health, 1(1):40-43.
- • Arem H et al. (2015). “Leisure time physical activity and mortality.” JAMA Intern Med, 175(6):959-967.
- • Wang X et al. (2014). “Fruit and vegetable consumption and mortality.” BMJ, 349:g4490.
- • Ekelund U et al. (2019). “Dose-response associations between sedentary time and mortality.” BMJ, 366:l4570.
- • Wood AM et al. (2018). “Risk thresholds for alcohol consumption.” Lancet, 391:1513-1523.
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