Gregorian to Hebrew date converter
Enter a Gregorian date to see the day, month and year in the Hebrew calendar, the lunisolar calendar that sets Jewish holidays.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter gregorian date.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
The Hebrew calendar is lunisolar: months have 29 or 30 days, and Adar I is added in 7 years of every 19; a year is a leap year when (7 × year + 1) mod 19 is less than 7. The year starts on 1 Tishri. Computed with the Intl Hebrew calendar (ICU).
Example
Inputs: Gregorian date = 2026-09-12. Result: Converted date: 1 Tishri 5787 AM; Day: 1; Month name: Tishri.
Limits and caveats
- The Hebrew day begins at sunset; the result is for the daytime hours of the Gregorian date.
- Range 1900 to 2100.
Questions about this tool
When does Hebrew year 5787 begin?
1 Tishri 5787 is Saturday 12 September 2026, starting at sunset on the evening of 11 September.
Why are there Adar I and Adar II?
A leap year adds a whole month to keep the festivals in their seasons, so Adar is doubled in 7 years of every 19.
How is the Hebrew year number found?
From Rosh Hashanah in the autumn it is roughly the Gregorian year plus 3761, and before it plus 3760.