A bidirectional converter between the Gregorian and Islamic (Hijri) calendars. Supports both the Kuwaiti Algorithm and Umm al-Qura calendar, with Islamic holiday lookup, moon phase tracking, calendar view, and age calculation. All processing runs entirely in your browser — no data is sent to any server.
| Language | Muharram | Safar | Rabi' al-Awwal | Rabi' al-Thani | Jumada al-Ula | Jumada al-Thani | Rajab | Sha'ban | Ramadan | Shawwal | Dhu al-Qi'dah | Dhu al-Hijjah |
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The Islamic calendar (Hijri calendar) is a lunar calendar that takes the Prophet Muhammad's migration (Hijra) from Mecca to Medina in 622 CE as its epoch. Each Islamic year consists of 12 lunar months, totaling 354 or 355 days — approximately 11 days shorter than a Gregorian year.
Kuwaiti Algorithm: An arithmetic calendar based on a 30-year leap cycle. Years 2, 5, 7, 10, 13, 16, 18, 21, 24, 27, and 29 of each cycle are leap years (355 days); the rest are common years (354 days).
Umm al-Qura: The official calendar of Saudi Arabia, based on astronomical observations. When supported by your browser, it can be used via the Intl.DateTimeFormat API.
This tool provides: