Hebrew Birthday Calculator

1. Enter your Gregorian birthday (the standard civil calendar date you were born).
2. The calculator finds your Hebrew birthday — the corresponding date on the Jewish lunisolar calendar. This date stays constant year to year on the Hebrew calendar.
3. See your upcoming Hebrew birthdays for the next 5 years as Gregorian dates. The Gregorian date moves around because the Hebrew year is shorter than the solar year, with periodic leap-month adjustments.
4. Use this for bar/bat mitzvah dates, yahrzeit calculations, or simply tracking your traditional Hebrew birthday alongside your civil one.

The Hebrew calendar is a lunisolar calendar — months follow the moon, but periodic leap months keep the calendar aligned with the solar year (and the agricultural seasons used in Jewish festivals).

Hebrew Year ≈ 354 days (12 lunar months) or 384 days (13 lunar months)
Leap years: 7 of every 19 years (years 3, 6, 8, 11, 14, 17, 19)
Leap month added: Adar I, before regular Adar

Hebrew Year Start (Year 1) = 3761 BCE (creation per Jewish tradition)
Current Hebrew Year = Gregorian Year + 3760 (approx, varies by Sept/Oct cutoff)

The Hebrew month names: Tishrei, Cheshvan, Kislev, Tevet, Shevat, Adar (Adar I and Adar II in leap years), Nisan, Iyar, Sivan, Tammuz, Av, Elul. The Jewish New Year (Rosh Hashanah) falls on 1 Tishrei.

The Hebrew birthday holds spiritual significance in Jewish tradition. It marks both age and the renewal of a person's connection to their soul-mission (purpose) for the coming year.

Three traditional practices on Hebrew birthdays:

• Receive an aliyah (Torah reading honor) on the Shabbat before or on your Hebrew birthday — a custom in many synagogues marking the day spiritually.
• Give tzedakah (charity) in the amount of your age or a multiple of 18 (chai). Some give one unit of currency per year of life as a renewal of one's purpose.
• Take time for personal reflection (cheshbon hanefesh) on the Hebrew birthday — a soul-accounting of the past year and resolutions for the year ahead. The Lubavitcher Rebbe popularized this practice in 20th-century Chasidic tradition.