Jewish Birthday Calculator

Find your Jewish birthday instantly. Enter your Gregorian date, get your Hebrew date—fast, accurate, no fuss.

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Tool Icon Jewish Birthday Calculator

Jewish Birthday Calculator

Convert your Gregorian birth date to the Hebrew calendar and find upcoming birthdays

Select Your Birth Date
The Jewish day begins at sunset of the previous evening.
Calculation History:
No calculation history yet
Jewish Calendar Rules:
Lunisolar Calendar

Based on moon phases but adjusted to the solar year.

Sunset Rule

Days begin at nightfall, meaning Hebrew dates change at sunset.

Adar Leap Months

Leap years contain Adar I and Adar II to keep Pesach in spring.

Bar/Bat Mitzvah

Calculated strictly by the Hebrew birthday reached.

Yahrzeits

Anniversaries are observed on the Hebrew death date.

Tishrei Start

The Hebrew year numbering changes on Rosh Hashanah.

How to Use:
  1. Enter your Gregorian birth date in the selector above.
  2. Select whether you were born before or after sunset (if known).
  3. Click "Calculate Jewish Birthday" to see your Hebrew birth details.
  4. The results will include your Hebrew date and the next Gregorian date for your Hebrew birthday.

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About This Tool

Look, I get it. Jewish holidays, birthdays, life events—they don’t always line up with the Gregorian calendar. One year your bar mitzvah falls in March, the next it’s in September. It’s confusing. That’s why I built this Jewish Birthday Calculator. It’s not fancy. No ads, no tracking, no “premium upgrade” nonsense. Just a simple way to convert your Gregorian birthday into the Hebrew calendar—and vice versa. I made this for my niece. She kept asking, “When’s my Hebrew birthday?” and I kept fumbling with conversion charts. So I coded something clean, fast, and actually useful. Now it’s here for anyone who needs it.

Key Features

  • Convert any Gregorian date to its Hebrew equivalent—no guesswork.
  • Go the other way too: input a Hebrew date and see when it lands this year.
  • Shows the Hebrew month name and day, so you know exactly when to light candles or celebrate.
  • Works for past and future dates—great for planning events or remembering anniversaries.
  • No sign-up. No cookies. It runs in your browser and forgets everything when you close the tab.
  • Mobile-friendly. Because who’s sitting at a desktop when they’re checking their birthday?

FAQ

Wait, why do I need a Hebrew birthday?
Good question. In Jewish tradition, your Hebrew birthday is considered spiritually significant. It’s when your personal spiritual energy resets, kind of like a cosmic reboot. Some people mark it with prayer, charity, or a small celebration. Others just like knowing. Either way, this tool helps you keep track.

Does it account for leap years in the Hebrew calendar?
Yes. The Hebrew calendar adds a 13th month (Adar II) in leap years to stay aligned with the solar cycle. The calculator handles that automatically. So if your birthday’s in Adar, it’ll tell you whether it’s Adar or Adar II this year. No headaches.