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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.

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.
Options

More time & date tools

- Date calculator (/time/date-math)
- Duration converter (/time/duration-converter)
- Timestamp converter (/time/timestamp-converter)
All time & date tools (/time)

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Canonical HTML: https://nutter.tools/time/age-calculator
Markdown version: https://nutter.tools/time/age-calculator.md
Plain-text version: https://nutter.tools/time/age-calculator.txt
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