Hijri Date Converter

This converter uses the tabular Islamic calendar algorithm, which follows a fixed 30-year cycle to determine leap years. It is accurate to within one or two days of the observed Hijri calendar. The actual Hijri calendar depends on moon sighting, so official dates in your country may differ slightly. For religious observance, always confirm with your local Islamic authority.

The tabular (arithmetic) Islamic calendar uses a fixed mathematical cycle of 30 years with 11 leap years to calculate dates. The observational calendar depends on the physical sighting of the crescent moon, which varies by location. The Umm al-Qura calendar used in Saudi Arabia is a third variant based on astronomical calculations. This tool uses the tabular method for consistent, predictable conversions.

The Islamic calendar is a purely lunar calendar based on the cycles of the moon. Each month begins with the new crescent moon and lasts either 29 or 30 days, giving a year of 354 days (or 355 in a leap year). This means the Hijri calendar shifts roughly 10-11 days earlier relative to the Gregorian calendar each year, causing Islamic dates to cycle through all seasons over about 33 years.

AH stands for "Anno Hegirae" (Latin for "in the year of the Hijra"). The Hijri calendar begins from the year Prophet Muhammad (PBUH) migrated from Mecca to Medina in 622 CE. This migration, known as the Hijra, marks the starting point of the Islamic calendar. So 1 Muharram 1 AH corresponds approximately to July 16, 622 CE in the Julian calendar.

In the tabular Islamic calendar, odd-numbered months (Muharram, Rabi al-Awwal, Jumada al-Ula, Rajab, Ramadan, Dhul Qadah) have 30 days, and even-numbered months (Safar, Rabi al-Thani, Jumada al-Thani, Shaban, Shawwal) have 29 days. Dhul Hijjah (month 12) has 29 days in regular years and 30 days in leap years.