How many days old am I?

Enter your birth date in the Birthday Calculator and it will show the total number of days you have been alive, along with total hours and weeks.

What day of the week was I born?

The Birthday Calculator shows the day of the week you were born. For example, if you were born on 15 June 1990, that was a Friday.

Birthday Calculator

Calculate days lived, next birthday countdown, zodiac sign, and milestone ages from any birthdate.

Date of birth

Age

3 months, 29 days

Next birthday

January 15

Year progress

Life statistics

Milestone birthdays

The Birthday Calculator shows your exact age, total days and hours lived, next birthday countdown, zodiac sign, and milestone birthday dates.

The probability of sharing a birthday with someone in a room of 23 people is over 50% (Birthday Paradox).
The most common birthday in the US is September 9th.
February 29th birthdays occur only in leap years — every 4 years.