Hebrew Birthday
Convert your Gregorian birthdate to the Hebrew lunisolar calendar date, Hebrew year (AM), and Bar/Bat Mitzvah milestone.
The Hebrew calendar synchronizes lunar months with solar years. A person's Hebrew birthday is celebrated on the anniversary of the Jewish calendar date on which they were born.
5760
Anno Mundi (AM)5773
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What Is a Hebrew Birthday?
A Hebrew birthday calculator translates a standard Gregorian calendar birthdate into its equivalent Hebrew lunisolar date (day, month like Nisan or Tishrei, and year Anno Mundi). The Hebrew calendar determines Jewish religious observance dates, yahrzeits, and Bar/Bat Mitzvah milestones.
How to Use This Calculator
- Enter your Gregorian birthdate.
- View the converted Hebrew calendar date in both English and Hebrew script.
- See your Hebrew year (Anno Mundi AM count).
- Discover the Hebrew year of your Bar or Bat Mitzvah (age 12/13).
Lunisolar Metonic Cycle Conversion
Y_{\text{AM}} = Y_{\text{Gregorian}} + 3760 \quad (\text{after Tishrei 1})Synchronizes 19-year Metonic cycles where 7 leap years add a 13th intercalary month (Adar II) to align lunar months with solar agricultural seasons.
Worked Example
Scenario: A person born on September 29, 2000.
Gregorian date: September 29, 2000.
Jewish New Year (Rosh Hashanah) occurred on September 30 in 2000.
Date falls on 29 Elul 5760 (Erev Rosh Hashanah).
Tips & Key Notes
- In Jewish tradition, days begin at sundown of the preceding evening, so a birth after sunset corresponds to the following Hebrew calendar day.
- The Hebrew calendar year 5784 began on September 15, 2023, and year 5785 began in October 2024.
- A Bar Mitzvah occurs when a boy turns 13 on his Hebrew birthday; a Bat Mitzvah occurs when a girl turns 12 (or 13).
Frequently Asked Questions
Why does my Hebrew birthday change on the regular calendar every year?
The Hebrew calendar is lunisolar (months based on the Moon, years adjusted for the Sun), causing Hebrew dates to shift by 10 to 20 days relative to the solar Gregorian calendar.
What does AM stand for in the Hebrew calendar?
AM stands for Anno Mundi ("Year of the World" in Latin), counting years from the traditional biblical creation date in 3761 BCE.
What happens if you are born in a Hebrew leap year (Adar)?
During Hebrew leap years, a 13th month is added: Adar I and Adar II. Those born in Adar celebrate in Adar II during leap years.
Does the Hebrew birthday change at sunset?
Yes, Hebrew calendar days officially begin and end at sunset (dusk) rather than midnight.
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