Islamic Calendar Converter
Convert dates in both directions between the Gregorian calendar and the Islamic (Hijri) calendar. Month names are shown in English, with the weekday, using the Umm al-Qura calendar — no libraries, everything runs in your browser.
Gregorian to Hijri
Hijri to Gregorian
Please note: Hijri dates are approximate. The Islamic calendar follows the sighting of the moon, so the actual date can differ by one or two days depending on your country and local moon sighting. Always confirm religious dates with your local scholars or mosque.
Hijri months in English
How to use
- To convert a Gregorian date to Hijri, pick the date from the calendar field and press Convert to Hijri.
- To convert a Hijri date to Gregorian, choose the day, month and year, then press Convert to Gregorian.
- The Today buttons fill in the current date instantly in either direction.
- The result shows the full date, the weekday, and the equivalent in the other calendar.
Frequently asked questions
It uses the Umm al-Qura calendar, the official civil calendar of Saudi Arabia, for Gregorian to Hijri conversion. Hijri to Gregorian conversion uses the standard arithmetic (tabular) Islamic calendar. Both are astronomical approximations of the moon-sighting calendar.
Because the real Islamic month begins with the physical sighting of the crescent moon, which can differ by one or two days between regions and weather conditions. Calculated dates are a guide; confirm religious dates locally.
No. All conversion happens inside your browser with built-in date functions. Nothing is uploaded or stored.
This converter is a calculation aid. For religious purposes, always follow the announced dates of your local scholars.