Two-way conversion between the Islamic (Hijri) and Gregorian calendars, calculated instantly in your browser.
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The Hijri-Gregorian Converter switches dates both ways between the Islamic lunar calendar and the standard Gregorian calendar — needed for finding the Hijri date of a birth, marriage or death, planning around Islamic months like Ramadan and Dhul Hijjah, or converting an official document date printed in one calendar to the other.
The Hijri calendar is purely lunar, with each month starting at the sighting (or astronomical calculation) of the new crescent moon, making it about 10-12 days shorter than the Gregorian solar year — this is why Islamic dates like Ramadan shift roughly 10 days earlier each Gregorian year, and why a simple year-offset conversion doesn't work accurately.
The Hijri year has 354 or 355 days (12 lunar months) versus the Gregorian year's 365 days, a gap of roughly 10-11 days. Over 33 Gregorian years, an Islamic date cycles through the entire solar calendar once.
This tool uses standard astronomical calculation for the Hijri calendar. Actual local moon-sighting announcements by religious authorities can vary by a day from calculated dates, so always confirm exact religious observance dates with your local mosque or authority.
Most AIVEXA tools run entirely in your browser (client-side), which means your files and inputs are processed on your own device and are not uploaded to a server.
Yes — it works on any modern browser (desktop, Android or iOS) without installing an app, and it's free to use with no signup or watermark.
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