What Is a Hebrew Birthday?
Your Hebrew birthday is the date you were born according to the Jewish calendar. Because the Jewish calendar follows lunar months, your Hebrew birthday falls on a different Gregorian date almost every year — usually within a few weeks of your civil birthday, but rarely on the same day. Many people discover their Hebrew birthday for the first time when planning a bar or bat mitzvah, marking a milestone birthday, or simply out of curiosity about the day they were born on the calendar of Jewish tradition.
To find it, enter the date of birth in the calculator above. You will instantly see the Hebrew birthday in English and in Hebrew letters, the bar mitzvah and bat mitzvah dates, and a table showing exactly when the next ten Hebrew birthdays fall on the regular calendar — so you will never have to look it up again.
Born After Sunset? Read This First
The single most common mistake when calculating a Hebrew birthday is forgetting that the Jewish day begins at nightfall. A baby born at 9 pm on March 4th was actually born on March 5th’s Hebrew date. If the birth happened after sunset, tick the born-after-sunset option in the calculator and it will shift the Hebrew date forward by one day. For births close to sunset, it is worth checking what time the sun set that day in the place of birth, because this one detail changes the Hebrew birthday — and the bar or bat mitzvah date — permanently.
Bar and Bat Mitzvah Date Calculator
A boy becomes a bar mitzvah on his 13th Hebrew birthday and a girl becomes a bat mitzvah on her 12th Hebrew birthday — counted by the Jewish calendar, not the civil one. The calculator shows both dates automatically for any date of birth, which makes it easy to start planning years in advance. Keep in mind that the celebration is often held on the Shabbat after the Hebrew birthday, when the bar mitzvah boy is traditionally called up to the Torah, so the calculated date is the anchor from which the celebration is planned.
Birthdays in Adar have a special rule of their own: a child born in Adar of a regular year celebrates in Adar II when the milestone year is a leap year, and a child born in Adar I or Adar II celebrates in plain Adar when it is not. The calculator applies these rules automatically, along with the rule for birthdays on the 30th of a month that has only 29 days in the target year.
Keep Every Hebrew Birthday on Your Calendar
Once you have calculated a Hebrew birthday, you can add it to your calendar with one click, and it is saved for you. Add the whole family, then create a free printable Jewish calendar and every birthday will appear on the correct day, every year, alongside the Jewish holidays — no recalculating needed. You can also use the Hebrew date converter to convert any other date between the Jewish and Gregorian calendars, such as anniversaries and yahrzeits.
Frequently Asked Questions
How do I find my Hebrew birthday?
Enter your date of birth in the calculator at the top of this page. Your Hebrew birthday appears instantly, in English and in Hebrew letters. If you were born after sunset, tick the born-after-sunset option, because the Jewish day begins at nightfall and your Hebrew birthday is one day later than it would otherwise appear.
Why is my Hebrew birthday on a different date each year?
The Jewish calendar is based on lunar months, so Hebrew dates drift against the Gregorian calendar from year to year. Your Hebrew birthday is fixed on the Jewish calendar; it is the civil date that moves. The calculator shows the next ten years so you can see exactly where it falls.
When is a bar mitzvah or bat mitzvah?
A bar mitzvah is the 13th Hebrew birthday and a bat mitzvah is the 12th Hebrew birthday, both counted on the Jewish calendar. The calculator shows both dates for any date of birth.
What if I was born in Adar?
In a Jewish leap year there are two months of Adar. Someone born in Adar of a regular year marks their Hebrew birthday in Adar II during leap years, while someone born in Adar I or Adar II marks it in plain Adar during regular years. The calculator handles these switches for you.
What is the difference between a Hebrew birthday and a regular birthday?
A regular birthday follows the Gregorian (civil) calendar and falls on the same date every year. A Hebrew birthday follows the Jewish calendar, so it falls on the same Hebrew date every year but a shifting Gregorian date. In Jewish tradition, the Hebrew birthday is considered a personally meaningful day.
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