The Hebrew calendar is lunisolar: months follow the moon, and a 13th month (Adar II) is added in 7 of every 19 years so that holidays stay in their seasons. That is why a Hebrew birthday moves around the Gregorian calendar each year. This converter uses the Hebrew calendar built into your browser, so it works offline and nothing you enter is sent anywhere.
Popular uses
- Find your Hebrew birthday and when it falls this year
- Work out the Hebrew date for a bar or bat mitzvah
- Find the Gregorian date of a yahrzeit (memorial day) in the coming years
- Write the Hebrew date on an invitation or document
Also known as: Jewish calendar converter ยท Hebrew birthday ยท Gregorian to Hebrew date ยท Yahrzeit date ยท Bar mitzvah date
How to use
- To convert a Gregorian date, choose it and tick "after sunset" if the event happened in the evening.
- Read the Hebrew date and the same Hebrew date in the coming years.
- To convert the other way, choose the Hebrew day, month and year.
Why this tool is safe
This page loads no tracking scripts, and its security policy forbids it from sending data to other servers. The work happens in your browser's memory and is gone when you close the tab.
Frequently asked questions
Why does "after sunset" matter?
A Hebrew day starts at nightfall, not at midnight. Someone born on Monday evening after sunset was born on Tuesday's Hebrew date.
What happens to Adar in a leap year?
Leap years have Adar I and Adar II. Following common custom, a date in Adar of a regular year is marked in Adar II in a leap year. Customs differ for yahrzeits, so check with your rabbi for religious dates.
What if the day does not exist that year?
Heshvan and Kislev sometimes have 29 days instead of 30. The tool then shows the 29th and says the date was adjusted.
How accurate is it?
It uses the standard fixed Hebrew calendar (the same rules as printed Jewish calendars) built into modern browsers, and works for any date from year 1 onwards.