Biological Age Calculator
How fast are you really ageing? Nine markers from a standard blood test answer it — using the validated PhenoAge method, not a lifestyle quiz.
Already know the science? See the technical PhenoAge calculator page. Same engine, same result.
Your result
Enter your markers on the left to see your biological age, delta versus chronological age, and 10-year mortality score.
Your age is one number. Your trend is the story.
Misi tracks your biological age from every lab upload, forecasts where each marker is heading, and rebuilds your meal and training plan when the numbers drift. That is how the trend bends.
Frequently asked
What is biological age?
Chronological age counts birthdays; biological age measures how fast your body is actually ageing. Two 45-year-olds can differ by more than a decade biologically — and biological age is the one that predicts disease and mortality risk.
How does this calculator measure biological age?
It uses PhenoAge (Levine 2018), a peer-reviewed method built from NHANES population data. It combines nine markers from a standard blood panel — albumin, creatinine, glucose, CRP, lymphocyte %, MCV, RDW, alkaline phosphatase and white blood cell count — plus your chronological age.
Is this more accurate than online quizzes about lifestyle?
Yes, categorically. Questionnaire "biological age" quizzes are entertainment. PhenoAge is computed from measured blood chemistry and validated against 10-year mortality outcomes in large cohorts.
Can I lower my biological age?
The modifiable inputs — fasting glucose, inflammation (CRP), and blood-count markers — respond to resistance training, cardio, nutrition quality, sleep and weight management within months. Re-test quarterly and track the trend rather than any single reading.
Which blood tests do I need?
A comprehensive metabolic panel (CMP) plus a complete blood count (CBC) with differential, and hs-CRP. These are among the cheapest and most commonly ordered labs — many people already have them from an annual physical.
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