Dates & Time

Birthday (Age, Zodiac, Milestones) Calculator

Enter your birth date and get your exact age, a countdown to your next birthday, the day of the week you were born, and your zodiac signs.

How to use
  1. Enter your birth date.
  2. See your next-birthday countdown and zodiac details.
Born
Current age

Next birthday
Day of birth
Western zodiac
Chinese zodiac
Total days lived
Date math uses your inputs as given; check time-zone and leap-year edge cases.
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How it's calculated

age = today − date of birth (years, months, days)

Subtracts the birth date from today to give exact age in years/months/days and total days lived. Western zodiac comes from the birth month/day range; Chinese zodiac animal = birth year mod 12.

Common questions

Does it show both zodiac systems?

Yes. It gives your Western sun sign and your Chinese zodiac animal.

Can it tell me the weekday I was born?

Yes. From your birth date it works out which day of the week it was.