Islamic Calendar Converter
Convert dates between the Gregorian and Islamic (Hijri) calendar systems.
How to Use the Islamic Calendar Converter
- Select the conversion direction: Gregorian to Hijri or Hijri to Gregorian.
- Enter the year, month, and day for the date you want to convert.
- Click Convert to see the equivalent date in the other calendar system.
- The result also shows the day of the week and the Julian Day Number.
Casos de Uso
- •Finding the Hijri equivalent of a Gregorian birthday or anniversary.
- •Determining when Islamic holidays fall on the Gregorian calendar.
- •Historical research involving dates from the Islamic world.
- •Planning events around Islamic months such as Ramadan or Dhul Hijjah.
Fórmula
The Islamic calendar is a purely lunar calendar of 12 months. Conversion uses the Julian Day Number (JDN) as an intermediate step between Gregorian and Hijri dates.
Perguntas Frequentes
What is the Islamic (Hijri) calendar?
The Islamic calendar is a lunar calendar consisting of 12 months in a year of 354 or 355 days. It began with the Hijra (migration of the Prophet Muhammad from Mecca to Medina) in 622 CE. The year is approximately 11 days shorter than the Gregorian year.
How accurate is this conversion?
This calculator uses the standard astronomical algorithm based on the Julian Day Number. The result matches the tabular Islamic calendar used in most countries for civil purposes. Actual month start dates may vary by one day depending on moon sighting.
What is Ramadan?
Ramadan is the 9th month of the Islamic calendar and is observed by Muslims worldwide as a month of fasting, prayer, and reflection. Its start and end depend on the sighting of the crescent moon.