Convert any date between the Gregorian (civil) calendar and the Hebrew (Jewish) calendar. Enter a Gregorian date (month, day, year) to get the equivalent Hebrew date, or enter a Hebrew date to convert back. Results include the Hebrew year, month name, and day in both numeric and traditional Hebrew letter notation.
Converted Date
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Hebrew Date
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Gregorian Date
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Hebrew Year Type
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Day of Week
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Hebrew Numeral Notation
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The Hebrew calendar is a lunisolar calendar used by Jewish communities for religious purposes. It is based on both the cycles of the moon (months) and the sun (years). The calendar counts years from the traditional date of Creation, so the Hebrew year is approximately 3,760 years ahead of the Gregorian year.
Hebrew years are numbered from the traditional date of the Creation of the world (Anno Mundi). To convert a Gregorian year to a Hebrew year, add approximately 3,760 or 3,761 depending on whether the date falls before or after Rosh Hashanah (the Jewish New Year, which occurs in autumn).
The Hebrew calendar has 12 months in a regular year and 13 in a leap year: Nisan, Iyyar, Sivan, Tamuz, Av, Elul, Tishrei, Cheshvan, Kislev, Tevet, Shevat, Adar (and Adar II in leap years). The months alternate between 29 and 30 days, tracking the lunar cycle.
A Hebrew leap year adds an extra month called Adar II (Adar Bet) after the regular month of Adar. This keeps the lunar calendar synchronized with the solar year. Leap years occur 7 times in every 19-year cycle, in years 3, 6, 8, 11, 14, 17, and 19 of the cycle.
In Jewish tradition, the day begins at nightfall, based on the Biblical account of Creation: 'And there was evening, and there was morning.' This means a Hebrew date technically starts the previous evening on the civil calendar. The 'After Sunset' option accounts for this when converting dates.
Hebrew dates are written right-to-left with the day of the month first, followed by the month name, and then the Hebrew year. Numbers are traditionally represented using letters of the Hebrew alphabet (gematria). For example, the 22nd of Adar 5786 is written כ״ב בַּאֲדָר תשפ״ו.
Yes — Jewish holidays always fall on the same Hebrew calendar date each year. For example, Chanukah is always on the 25th of Kislev. However, because the Hebrew and Gregorian calendars differ, the corresponding Gregorian dates shift from year to year.
This converter uses the standard mathematical algorithm (molad-based calculation) that has been used since the 4th century CE when Hillel II fixed the Hebrew calendar. It is accurate for all modern dates and for most historical dates within the Jewish calendar era.