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  1. Home
  2. Time & dates
  3. Age calculator
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Age calculator

Compute exact age in years, months, and days at any date, with leap day handling, birthday countdown, birth weekday, zodiac, and milestones.

This tool is in beta

Still being tested. If a result looks wrong, tell us.

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Enter a birth date to compute the age.

This is calendar age only: real month lengths, leap years, and one stated leap-day convention. It does not look up famous birthdays, historical events, or country life expectancy; those extras on similar tools come from a server, and this page never leaves the tab. Astrology rows are the published date windows, quoted as written, not a claim about personalities.

Dates

Defaults to today; change it to age at any date

Dates sit inside 1900-2100, plain Gregorian calendar math. A February 29 birthday is observed on March 1 in non-leap years, for both the age digit and the countdown.

More time & date tools

  • Date calculator
  • Duration converter
  • Timestamp converter
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