Informational purposes only
Age Calculator provides calendar calculations for general information. It is not professional advice — legal, medical, financial or otherwise. Age thresholds for official purposes (school enrollment, retirement, contracts) may use specific local rules or time-of-day definitions that differ from this calculator’s calendar-date method.
Depends on input
Results are only as accurate as the dates you enter. A one-day typo changes the result. Always double-check birth and reference dates, especially around month ends and February 29.
How we calculate
We use real month lengths, the Gregorian leap-year rule, February 28 for February 29 in common years, and UTC midnight differences to avoid timezone shift. Elapsed hours/minutes/seconds assume each day is exactly 24 hours (no daylight-saving adjustment, no fractional days). See How It Works for details.
Verification
For important decisions, independently verify with official records or a qualified professional. We strive for accuracy but do not guarantee that results will meet your specific requirements.
No liability for use
Use of the site and results is at your own risk. To the extent permitted by law, we are not liable for losses arising from reliance on the tool.
External links
Any links to external sites are for convenience. We don’t control their content.
Contact
If you find an edge case we handle incorrectly, please let us know with the dates and expected behavior.