Hebrew birthday calculator
Find your Jewish birthday on the Hebrew calendar, when it falls in the coming years, and the bar or bat mitzvah date.
How to find your Hebrew birthday
- Enter your date of birth.
- Tick born after sunset if you were born in the evening after the sun went down. The Hebrew day had already changed.
- Read your Hebrew birthday and the regular dates it falls on in the coming years.
The calculator uses the same rules as our printed calendar, built on Hebcal. Nothing you enter is saved.
Questions and answers
What is a Hebrew birthday?
A Hebrew birthday is the date you were born on the Hebrew calendar, for example 13 Adar. Each year it falls on a different regular date because the Hebrew calendar follows the moon and adds a leap month seven times every 19 years.
Does being born after sunset change my Hebrew birthday?
Yes. A Hebrew day starts at sundown. If you were born after sunset, your Hebrew birthday is the Hebrew date of the next regular day.
What if I was born in Adar and this year has two Adars?
If you were born in Adar of a regular year, your birthday is kept in Adar II in a leap year, the standard practice and Hebcal's rule. A bar or bat mitzvah is in Adar II too. If your family uses Adar I, you can switch the calculator. A birthday in Adar I or Adar II of a leap year stays in that same Adar in later leap years, and moves to Adar in a regular year.
What if I was born on 30 Cheshvan or 30 Kislev?
Those months have 29 days in some years. In those years the birthday moves to the 1st of the next month. The table above notes when this happens.
How is the bar or bat mitzvah date found?
A bar mitzvah is on the Hebrew birthday when a boy turns 13. A bat mitzvah is at 12 in most communities, and some celebrate at 13. The celebration often moves to a nearby Shabbat. Ask your rabbi.