Convert between Gregorian and Hebrew (Jewish) calendar dates. Tick after sunset for evening dates, see the date in Hebrew numerals, whether the year is a leap year with Adar I and Adar II, and the dates of the major holidays that year.
Last updated:
Convert
Tick for an evening event or birth after sunset.
1 to 29 or 30.
Enter your values to see the result.
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How to use the Hebrew Date Converter
Choose the direction: Gregorian to Hebrew or Hebrew to Gregorian.
Enter the date. For Gregorian dates, tick After sunset if the event was in the evening.
For Hebrew dates, type the year (e.g. 5787), pick the month and enter the day.
Read the result in English and Hebrew, with the weekday and year type.
See the holiday table for that Hebrew year, with the evening each holiday begins.
How the Hebrew calendar works
The Hebrew calendar is lunisolar. Months follow the moon (29 or 30 days, averaging 29 days 12 hours 793 parts), and a 13th month is added in 7 of every 19 years so that Passover stays in spring. The year begins on 1 Tishrei (Rosh Hashanah), and the day begins at sunset.
To convert, the calculator finds 1 Tishrei of the Hebrew year (in September or October of Gregorian year Hebrew year − 3761), lists the start of every month, and then adds day − 1 to the start of the chosen month. The arithmetic rules, including the postponements (dechiyot) that set Rosh Hashanah, come from your browser's built-in Hebrew calendar.
Hebrew months
#
Month
Hebrew
Days
Usually falls in
1
Tishrei
תשרי
30
Sep–Oct
2
Cheshvan
חשוון
29 or 30
Oct–Nov
3
Kislev
כסלו
30 or 29
Nov–Dec
4
Tevet
טבת
29
Dec–Jan
5
Shevat
שבט
30
Jan–Feb
6
Adar I (leap years only)
אדר א׳
30
Feb–Mar
6/7
Adar / Adar II
אדר / אדר ב׳
29
Feb–Mar / Mar–Apr
7/8
Nisan
ניסן
30
Mar–Apr
8/9
Iyar
אייר
29
Apr–May
9/10
Sivan
סיוון
30
May–Jun
10/11
Tammuz
תמוז
29
Jun–Jul
11/12
Av
אב
30
Jul–Aug
12/13
Elul
אלול
29
Aug–Sep
Month numbering here counts from Tishrei, the start of the civil year; in the Torah, Nisan is counted as the first month.
Frequently asked questions
Why does the after-sunset option change the date?
In the Hebrew calendar a day runs from sunset to the next sunset. A birth or event after sunset on a Gregorian date belongs to the next Hebrew date, so tick After sunset to get the right Hebrew birthday or yahrzeit.
How do I convert a Hebrew year to a Gregorian year?
Subtract 3761 for dates from Rosh Hashanah (September or October) to December 31, and subtract 3760 for dates from January 1 to the end of Elul. For example, Hebrew year 5787 runs from September 2026 to September 2027.
What is a Hebrew leap year?
A leap year adds a 13th month, Adar I, before Adar (then called Adar II), so the calendar keeps Passover in spring. Seven of every 19 years are leap years: years 3, 6, 8, 11, 14, 17 and 19 of the 19-year cycle.
Which Adar is used in a leap year?
Purim is celebrated in Adar II in a leap year. For birthdays and yahrzeits from a common-year Adar, customs differ (many use Adar II, some Adar I). When you pick Adar for a leap year, the converter uses Adar II and says so.
Why do Hebrew years have different lengths?
Common years have 353, 354 or 355 days and leap years 383, 384 or 385 days. Cheshvan and Kislev can have 29 or 30 days, and these adjustments keep Rosh Hashanah off certain weekdays according to the postponement rules.
Do Jewish holidays start the evening before?
Yes. Because the Hebrew day starts at sunset, every holiday begins on the evening before its Gregorian date. The holiday table shows that evening in the last column.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.