How to Convert Hijri to Gregorian Dates
Need to turn an Islamic (Hijri) date into a Gregorian one — or the other way around? This guide explains how the two calendars relate and how to convert any date in seconds.
Two calendars, two systems
The Gregorian calendar is solar (365 days), while the Hijri calendar is lunar (about 354 days). Because the lunar year is roughly 11 days shorter, Islamic dates move earlier through the Gregorian year each year.
Why the date shifts each year
That ~11-day difference is why Ramadan and other Islamic months arrive about 11 days earlier every Gregorian year, cycling through all seasons over roughly 33 years.
How to convert instantly
Rather than calculating by hand, enter any Hijri or Gregorian date into our free converter and get the exact equivalent at once — useful for birthdays, official documents, and planning around Islamic dates.