What calendar systems does this free converter support?

Our free calendar converter supports 11 different calendar systems: Gregorian (standard Western calendar), Julian, Islamic/Hijri, Hebrew, Persian/Solar Hijri, Chinese, Ethiopian, Coptic, Indian National, Mayan Long Count, and Julian Day Number. Convert dates between any of these calendars instantly.

How accurate is the calendar date conversion?

Our free calendar converter uses precise astronomical calculations and established conversion algorithms to ensure accurate date conversions between all supported calendar systems. The tool accounts for leap years, intercalary months, and other calendar-specific rules for maximum accuracy.

Can I view full calendar months in different calendar systems?

Yes! Our free tool includes a Calendar View feature that displays complete months in any supported calendar system. You can navigate between months and years, and see how dates correspond to the Gregorian calendar. Perfect for understanding different cultural and religious calendars.

What is the Islamic/Hijri calendar and how does it work?

The Islamic or Hijri calendar is a lunar calendar consisting of 12 months with 29 or 30 days each, totaling approximately 354 days per year. It's used to determine Islamic holidays and religious observances. Our free converter accurately converts between Hijri and other calendar systems.

Is this calendar converter really free to use?

Yes! This calendar date converter is completely free to use with no subscriptions, no sign-ups, and no hidden fees. Access all features including date conversion between 11 calendar systems and full calendar month views at no cost. Part of FreeWWW's collection of free tools.

Free Online Calendar Date Converter (No Signup)

About This Free Calendar Converter

Convert dates between 11 different calendar systems including Gregorian, Islamic (Hijri), Hebrew, Persian, Chinese, and more. This free tool provides accurate conversions with detailed calendar information.

Supported Calendar Systems:

Gregorian: Standard Western calendar used worldwide
Julian: Old calendar system, predecessor to Gregorian
Islamic (Hijri): Lunar calendar used in Islamic countries
Hebrew: Lunisolar calendar used for Jewish religious observances
Persian (Solar Hijri): Solar calendar used in Iran and Afghanistan
Chinese: Lunisolar calendar with 60-year cycles
Ethiopian: Solar calendar with 13 months
Coptic: Solar calendar used by the Coptic Orthodox Church
Indian National: Solar calendar based on the Saka era
Mayan Long Count: Ancient Mesoamerican calendar system
Julian Day Number: Continuous day count for astronomical calculations

How to Use This Tool

Select a source calendar — Choose the calendar system you want to convert from (Gregorian, Islamic, Hebrew, Persian, Chinese, etc.).
Enter a date — Input the date using the date picker or manual entry fields for year, month, and day.
View all conversions — See the equivalent date instantly displayed across all supported calendar systems, including Julian Day Number.
Browse the calendar view — Switch to the Calendar View tab to see a full month display with navigation controls in any calendar system.

Common Use Cases

When is Ramadan this year in the Gregorian calendar? Convert Islamic Hijri dates to Gregorian to plan around religious observances and holidays.
What is today's date in the Hebrew calendar? Quickly find the corresponding Hebrew date for Jewish holidays, Torah readings, or historical research.
How do I convert a Persian (Solar Hijri) date? Translate Persian calendar dates used in Iran and Afghanistan to Gregorian or other systems.
What year is it in the Chinese calendar? Find the Chinese calendar equivalent with celestial stems, terrestrial branches, and zodiac animal.
How do I find the Julian Day Number for a date? Calculate the JDN used in astronomy and historical chronology for any date across calendar systems.

🗓️ Calendar Date Converter

About This Free Calendar Converter

How to Use This Tool

Common Use Cases