Hebrew Birthday Calculator
Convert your Gregorian birthday to the Hebrew calendar and find the date of your next Hebrew birthday. See your Hebrew date of birth and upcoming birthday in both calendars.
About the Hebrew Birthday
A Hebrew birthday is the annual anniversary of birth, observed on the Hebrew calendar date of birth. Unlike the Gregorian birthday, which falls on the same date each solar year, the Hebrew birthday shifts on the Gregorian calendar because the Hebrew calendar is lunisolar — months track the moon (29–30 days) while years are kept in sync with the sun through the addition of a leap month (Adar II) seven times in a 19-year cycle.
How the Hebrew Birthday Is Calculated
The calculator first converts your Gregorian birth date to its Hebrew equivalent. Then, to find your next Hebrew birthday, it searches forward in the Gregorian calendar until it reaches a day whose Hebrew month and day match your Hebrew date of birth. Special rules apply for births in Adar of leap years and for the variable-length months of Cheshvan and Kislev (which can be 29 or 30 days).
Customs and Significance
- Some have the custom to celebrate the Hebrew birthday rather than (or in addition to) the Gregorian one.
- It is customary to recite the Shehecheyanu blessing on a Hebrew birthday, thanking God for sustaining life to reach the occasion.
- A Bar or Bat Mitzvah — the coming of age at 13 (boys) or 12 (girls) — is calculated by the Hebrew birthday, not the Gregorian one.
- Yahrzeit (the anniversary of passing) is likewise observed on the Hebrew date of death.
"Happy birthday" in Hebrew is Yom Huledet Sameach (יום הולדת שמח). The greeting is used both for Hebrew and Gregorian birthdays.
Frequently Asked Questions
How do I find my Hebrew birthday?
Enter your Gregorian date of birth into the calculator above. It converts the date to the Hebrew calendar and shows your Hebrew date of birth, along with the date of your next Hebrew birthday on the Gregorian calendar.
Why is my Hebrew birthday different each year?
The Hebrew calendar is lunisolar — months follow the lunar cycle while years track the sun. Because a lunar year (about 354 days) is shorter than a solar year (365 days), the Hebrew date shifts against the Gregorian calendar each year, with periodic leap months (Adar II) to realign.
How do you say "happy birthday" in Hebrew?
"Happy birthday" in Hebrew is "Yom Huledet Sameach" (יום הולדת שמח). On a Hebrew birthday, it is customary to celebrate, and some have the custom of wearing a new garment or reciting the Shehecheyanu blessing.
What happens if I was born in Adar of a leap year?
If you were born in Adar I (the leap month) of a Hebrew leap year, your birthday is observed in Adar II in non-leap years. If born in Adar II, it is observed in Adar (the single Adar) in non-leap years. This calculator handles these rules automatically.