Age Calculator — Exact Age in Years, Months, Days
Find your exact age from any birthdate in seconds. See years, months, days, total days lived, the weekday you were born, plus a birthday countdown free.
Free, no signup needed. Runs 100% in your browser.
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How to use this tool
- Enter the birthdate.
- Keep today or pick another comparison date.
- Copy the exact age and birthday summary.
Frequently asked questions
Is the result correct for leap years?
Yes. The math uses real calendar dates, so leap days and uneven month lengths are handled automatically.
How is the next birthday countdown calculated?
From the comparison date to the next occurrence of the birth month and day. February 29 birthdays use February 28 in non-leap years.
Is it free?
Yes, free with no signup. All math runs in your browser.
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