Hebrew Birthday Calculator

Convert any Gregorian birthdate to the Hebrew calendar and discover your Jewish birthday — the annual celebration date in the Hebrew year.

✡ Hebrew Date Converter

Date of Birth (Gregorian)

Find Hebrew birthday for year

Gregorian Birthday

Hebrew Year (birth)

Hebrew Month

Next Gregorian Date

The Hebrew Calendar Explained

The Hebrew calendar (הַלּוּחַ הָעִבְרִי) is a lunisolar calendar — it is based on both lunar months and the solar year. Each month begins with the new moon and has 29 or 30 days. The Hebrew year typically has 12 months but occasionally has 13 (a leap year adds an extra month of Adar). The current Hebrew year corresponds to the traditional count of years since Creation.

Hebrew Month	Hebrew (עברית)	Approx. Gregorian	Days
Tishrei	תִּשְׁרֵי	Sep–Oct	30
Cheshvan	חֶשְׁוָן	Oct–Nov	29 or 30
Kislev	כִּסְלֵו	Nov–Dec	30 or 29
Tevet	טֵבֵת	Dec–Jan	29
Shevat	שְׁבָט	Jan–Feb	30
Adar (I/II)	אֲדָר	Feb–Mar	29 (30 in leap)
Nisan	נִיסָן	Mar–Apr	30
Iyar	אִיָּר	Apr–May	29
Sivan	סִיוָן	May–Jun	30
Tammuz	תַּמּוּז	Jun–Jul	29
Av	אָב	Jul–Aug	30
Elul	אֱלוּל	Aug–Sep	29

✡ Note: Because the Hebrew calendar drifts relative to the Gregorian calendar by 10–12 days per year (corrected by leap months), your Hebrew birthday falls on a different Gregorian date each year — typically drifting earlier then jumping forward when a leap month occurs.

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Frequently Asked Questions

In Jewish tradition, the Hebrew birthday is considered the day with special spiritual significance for that individual. The Talmud teaches that on one’s Hebrew birthday, their mazal (spiritual energy or fortune) is especially strong. Key lifecycle events like bar/bat mitzvah are celebrated on the Hebrew birthday, and some observe special customs including extra prayer, charity, and Torah study on this day.

Some years, Cheshvan has only 29 days and Kislev has 29 days. If you were born on the 30th of these months in a year when they had 30 days, your Hebrew birthday in years when the month is short is celebrated on the 1st of the following month. The Talmud and halachic authorities provide guidance on these edge cases.

The Hebrew year is calculated from the traditional year of Creation. Year 5785 spans from Rosh Hashanah 2024 (October 2–4, 2024) through Rosh Hashanah 2025 (September 22–24, 2025). Year 5786 begins at Rosh Hashanah 2025. The Hebrew year count is Anno Mundi (AM) — meaning “in the year of the world.”