Bar / Bat Mitzvah Date Calculator
Find the Hebrew birthday and Bar Mitzvah (age 13) or Bat Mitzvah (12 Orthodox, 13 Reform) ceremony date including the traditional Shabbat ceremony day.
RELIGION · SOCIALFind the Hebrew birthday and the Bar Mitzvah (age 13) or Bat Mitzvah (12 in Orthodox / Conservative, 13 in Reform) ceremony date including the traditional next Shabbat for the public ceremony.
Takes a Gregorian birth date, converts to Hebrew, projects forward 12 or 13 Hebrew years, and applies the Adar I / Adar II halachic rule for children born in leap-year months. Returns the Hebrew ceremony date, Gregorian equivalent, and the Saturday on or after for the standard public ceremony.
Bar / Bat Mitzvah Date Calculator
Find the Hebrew birthday and Bar Mitzvah (age 13) or Bat Mitzvah (age 12 Orthodox / 13 Reform) ceremony date. Includes the next Shabbat after the Hebrew birthday — the traditional ceremony day.
Hebrew Birthday
The actual day on the Hebrew calendar when your child was born.
Gregorian Equivalent
Next Shabbat (Traditional Ceremony)
Most ceremonies happen on the Shabbat (Saturday) on or after the Hebrew birthday.
Bar / Bat Mitzvah Quick Guide
A Jewish child becomes obligated in mitzvot (commandments) automatically when they reach the qualifying Hebrew birthday — 13 years for boys (Bar Mitzvah), 12 years for girls in Orthodox and most Conservative traditions, or 13 for girls in Reform and Reconstructionist traditions.
The public ceremony — being called to read from the Torah, hosting a kiddush or party — is customarily held on the first Shabbat on or after the Hebrew birthday. Some families wait for the parshah that matches the bar/bat mitzvah child or for school-year scheduling.
Important date pairing: a child born in Adar II of a Hebrew leap year reaches their bar/bat mitzvah on Adar in regular years (halachic rule). Children born around Rosh Hashanah may find the Hebrew calendar shifts their ceremony date by a full month from what the Gregorian date suggests.
Ceremony scheduling varies by family, synagogue, and movement. Consult your rabbi for the final ceremony date — they may consider parsha, school calendar, and family availability.