Age Calculator
Enter one birth date to calculate exact age, birthday progress, upcoming milestones, Gregorian and calculated Hijri dates, and a concise cultural birth profile.
Your age, birthday and birth profile in one clear view.
Enter a Gregorian birth date, or switch to Hijri entry. The calculation stays in this browser and is not added to the page URL.
As of 31 July 2026
Your Birth Profile
Traditional and cultural classificationsHow to useThe default path requires one birth date. Optional controls appear only when a different calendar or a special date rule is relevant.
What your result meansEvery output remains tied to age, birth date, birthday timing, calendar identity or a clearly labelled birth-date tradition.
Formula and calculation methodThe calculator uses calendar-aware date arithmetic. It does not treat every month as 30 days or every year as 365 days.
A year or month is counted only after its corresponding anniversary date has been reached.
People born on February 29 can select the preferred non-leap-year anniversary convention.
Without a birth time and time zone, totals smaller than a day are derived from complete calendar days.
Result detailsThese items are educational classifications, not predictions or personal assessments. Boundaries and traditions can vary between sources.
Zodiac and Chinese calendar
Western zodiac uses standard tropical date ranges. Chinese zodiac uses the browser’s Chinese-calendar year, so the animal changes at the Chinese New Year rather than January 1.
Stone, flower and season
Birthstones and flowers are month-based traditions, with recognised alternatives shown where applicable. Seasons use meteorological months for both hemispheres.
Generation label
The displayed label uses a stated common range. Generational boundaries are broad social reference points and are not universally agreed.
Tips and common mistakesMost incorrect results come from date-format confusion, inappropriate calendar assumptions or simplified arithmetic.
Tips
- Confirm the selected Gregorian or Hijri birth calendar.
- Use the written result date to verify the day and month.
- Keep the calculation date set to today for current age.
- Choose a historical or future reference date when needed.
- Review the February 29 option when it appears.
- Use the report for a transparent calculation record.
Common mistakes
- Subtracting the two years without checking the birthday.
- Treating every month as 30 days.
- Treating every year as 365 days.
- Entering day and month in the wrong order.
- Changing the Chinese zodiac on January 1.
- Treating a calculated Hijri date as an official moon-sighting determination.
Frequently asked questionsClear answers about exact age, reference dates, Hijri conversion, leap-day birthdays and cultural birth-profile items.
ReferencesThe implementation identifies its calendar methods and uses recognised educational references for traditional datasets and search/publisher presentation principles.
- Google Search Essentials — people-first content and crawlable page guidance.
- Google Software App structured data — WebApplication markup.
- Google AdSense ad placement guidance — separation from navigation and actions.
- Hong Kong Observatory — Chinese 12-animal and stem–branch cycles.
- Gemological Institute of America — birthstone references.
- Old Farmer’s Almanac — birth flowers and common zodiac date ranges.
- Pew Research Center — cautions when using generation labels.
- Timeanddate.com — season definitions and hemisphere differences.
- ECMAScript Internationalization API — Gregorian, Umm al-Qura and Chinese calendar formatting available in the user’s browser.
- Internal calendar-aware arithmetic — exact completed years, months, days and ordinal-day differences.