Age Calculator

Enter a date of birth to see the exact age in years, months, and days as of today or any date you choose.

Mode
Age today
Today
2025-12-21
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Age date must be on or after the date of birth.

Why use an age calculator?

Age calculators make it easy to answer questions like “How old am I today?” or “How old will I be on a specific date?” with precise years, months, and days.

  • Quickly fill out forms that require age in years instead of just date of birth.
  • Plan milestones, exams, or eligibility that depend on exact chronological age.
  • See fun stats like total days lived for birthdays or social posts.
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How age is calculated from date of birth

Age calculators subtract the birth date from the reference date, then adjust for month lengths and leap years to return a precise years‑months‑days breakdown.

Practical uses of an age calculator

  • Verify age eligibility for school, licenses, or online registrations that require minimum or maximum ages.
  • Track how old children will be on future dates for planning activities, travel, or education.
  • Create personalized birthday content using exact age and days lived statistics.
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