Islamic (Hijri) to Gregorian Date Converter
Approximate the Gregorian (CE) date equivalent of a given Islamic Hijri calendar date using a simplified astronomical formula.
Results
What is it?
For entertainment purposes only. The Islamic (Hijri) calendar is a purely lunar calendar of 12 months (354 or 355 days per year), meaning it shifts approximately 10�11 days earlier each Gregorian year. The Hijri epoch is the emigration (Hijra) of the Prophet Muhammad from Mecca to Medina in 622 CE. This calculator provides an approximate Gregorian year using a linear approximation formula � exact conversion requires a full algorithmic table due to the variable length of lunar months.
How to use
Enter the Hijri year, month, and day. The calculator returns the approximate Gregorian year equivalent. The month and day are returned as entered � they are approximations only, as precise date conversion requires a lookup table or full algorithmic computation. For critical religious dates, always use a dedicated Hijri�Gregorian converter.
Example scenario
Hijri 1 Muharram 1446 (Islamic New Year 1446): the calculator returns approximately 2024 CE. Historically, 1 Muharram 1446 fell on July 7, 2024 � within the range, validating the approximation. For the year 1400 AH: 1400 � 0.970224 + 621.5643 � 1979 CE. Hijri 1400 indeed began in November 1979.
Pro tip
Because the Hijri year is ~354 days, important Islamic events like Ramadan, Eid al-Fitr, and Eid al-Adha rotate through all seasons over a 33-year cycle. This means Ramadan falls in summer in some years and winter in others. Planners and travelers should always verify religious date timings with an authoritative Islamic calendar for the year in question.