Free tool

Bar/Bat Mitzvah date calculator

Enter a Gregorian date of birth and get the Hebrew-calendar date the child turns 13 (or 12), that week's parasha, and the nearest Shabbat for the celebration. No signup.

Signup is currently in Hebrew — our team will gladly walk you through it in English.

A birth after sunset counts as the next Hebrew day — that can shift the result by a day.

Note: the date and parasha are calculated using the standard Hebrew calendar (Bar Mitzvah at 13, Bat Mitzvah at 12). The Hebrew day begins at sunset, so a birth after sunset may shift the result by a day. Confirm the exact date and Torah reading with your rabbi or gabbai.

Planning a Bar/Bat Mitzvah at your synagogue?

Beita runs the whole event — online RSVPs and registration, community-wide notifications, and the date shows up automatically on the synagogue screen.

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