Jewish Birthday Calculator

Find your Jewish birthday instantly—no guesswork, just accuracy.

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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

So, you want to know when your Jewish birthday is? Yeah, it’s not as straightforward as just looking at the calendar. The Jewish calendar is lunar-solar, which means it doesn’t line up neatly with the Gregorian one we use every day. That’s where this Jewish Birthday Calculator comes in. It’s a simple tool that takes your regular birthday and figures out what date it falls on in the Hebrew calendar—because, let’s be honest, some of us care about lighting that candle on the right day.

I built this after missing my own Hebrew birthday for the third year in a row. My mom called me out. Hard. So instead of just setting a reminder, I figured, why not make something that actually works? It’s not fancy. No ads, no tracking, no “premium upgrade.” Just type in your birth date, and it gives you the Hebrew equivalent. That’s it.

Key Features

  • Converts any Gregorian birth date to the Hebrew calendar
  • Works for past, present, and future years
  • Shows the Hebrew date in both numeric and written form (like “15 Nisan”)
  • Includes the corresponding Hebrew year
  • No login required—just plug and play
  • Mobile-friendly, because who’s at a desktop these days?

FAQ

Wait, why do I even need this?
Because Jewish holidays, birthdays, and yahrzeits are based on the Hebrew calendar. If you’re lighting a candle, saying a prayer, or just want to celebrate properly, you need the right date. This tool saves you from guessing or flipping through a physical calendar.

Is it accurate?
Yeah, pretty much. It uses standard Hebrew calendar conversion algorithms that account for leap months and lunar cycles. It’s not perfect for astronomical precision, but for everyday use? Totally solid. If you’re planning a synagogue event or something time-sensitive, double-check with a rabbi or a trusted calendar—but for personal use, you’re good.