Calendars
Global calendar converter
Convert a date between 10 calendar systems, including civil Hijri, Persian, Chinese and Hebrew, with clear methods and limits.
Help and method
Method and reference
Date-only comparison: no birth time or location is inferred. Hebrew and Hijri dates here label civil days, not local sunset boundaries. These results do not determine religious observance.
Apache-2.0 / ICU / MITGregorian
Proleptic Gregorian; no country-specific historical cutover.
Supported Gregorian dates: January 1, 1 – December 31, 9999
Year convention: CE
Method and reference · Gregorianproleptic-gregorian · Utility Atlas · Project source
Hijri (civil)
Unchanged tabular Scheme II, Friday epoch. Not Umm al-Qura or local moon sighting.
Supported Gregorian dates: July 19, 622 – December 31, 9999
Year convention: AH
Method and reference · Hijri (civil)islamic-tabular-scheme-ii-civil · Utility Atlas (unchanged) · Project source
Worked example
An example you can try or adapt to your own values.
- From calendar
- Gregorian
- Year
- 2025
- Month
- 7
- Day
- 25
- To calendar
- Chinese lunisolar
Result
Chinese lunisolar Year: 2025 Month: 6 Day: 1 This is the Chinese leap month: ✓