Free Islamic tool
Hijri Date Converter
Convert a Gregorian date to Hijri, or enter a Hijri date and convert it back to its calculated Gregorian equivalent.
Calculations use Umm al-Qura. Actual Islamic dates can differ by locality because many communities rely on moon sighting. Your date input is processed entirely in your browser.
How the conversion works
This tool uses the Umm al-Qura calendar available through the browser’s internationalization engine. It converts the date locally in your browser, so your input does not need to be sent to an external date-conversion service.
Can a converted Hijri date be different elsewhere?
Yes. A calculated calendar date can differ by one day from a date announced by a mosque, country or scholarly authority that relies on a particular moon-sighting method. For religious observances, use the authority you normally follow.
When is this converter useful?
It can help with historical date references, planning around Islamic months, checking an approximate Hijri birthday, or comparing a Gregorian event with its Islamic-calendar date. For dates tied to an actual observed crescent, treat the result as a planning reference.