Age Calculator

Extremely accurate—accounts for leap years, varying month lengths, and provides precise day-by-day calculations down to the second when birth time is provided.

The tool handles leap year birthdays correctly, showing next birthday dates in non-leap years (typically February 28 or March 1, depending on the calculation method used).

Yes, select any future date from the target date picker to see how old you'll be on that specific date, useful for retirement or milestone planning.

They're estimates based on average human physiology (70 bpm heart rate, 15 breaths/min, etc.) for fun reference and should not be used for medical purposes.

Western zodiac signs are based on birth date ranges throughout the year (12 signs), while Chinese zodiac uses the lunar calendar year with 12 animal cycles repeating every 12 years.

Yes, use "Copy Age Info" for quick sharing via clipboard or "Download Report" for detailed records saved as a text file on your device.

The tool uses your device's local time settings; consider time zone differences for precise calculations if you were born in a different time zone than your current location.

Birth dates are saved locally in your browser's local storage only for convenience; no data is sent to servers, ensuring complete privacy and security.

Yes, enter any birth date and target date to calculate anyone's age, useful for family members, historical figures, or planning events involving multiple people.

Significant life events like first birthday, school age (typically 5-6), legal adulthood (18-21 depending on country), retirement age (typically 65), and centenarian status (100) with precise dates.

The tool uses the Gregorian calendar (standard international calendar) for all calculations. For lunar calendar dates, you may need to convert them first before entering.

Yes, calculate each person's age separately and compare the results, or use the target date feature to find both ages on the same reference date for comparison purposes.