Hijri Gregorian Converter

The Hijri calendar is lunar: months begin when a new crescent is observed or when an official table says 1 Muharram, 1 Ramadan, and so on should fall. Gregorian dates are solar. Converting between them requires a published calendar method — not mental math or a simple offset.

Umm al-Qura is widely used in Saudi Arabia and many online tools. Tabular civil Hijri uses a fixed 30-year leap cycle and is deterministic worldwide. The two can differ by a day from each other or from local moon-sighting announcements — pick the method your community references.

With the defaults — Gregorian → Hijri direction, Umm al-Qura method, and date 2026-02-18 — the converter returns 1 Ramadan 1447 AH. That is the first day of Ramadan in Hijri year 1447 under these tables, useful for festival planning and cross-checking other tools.

Switch to Hijri → Gregorian to enter a Hijri year, month (1–12), and day — for example 1447, month 9, day 1 for 1 Ramadan — and read the civil date. Month 9 is Ramadan; month 10 is Shawwal (Eid al-Fitr follows 1 Shawwal).

Traditionally the Islamic day can change after Maghrib (sunset). This tool uses Gregorian midnight for day boundaries unless noted — a same-day ±1 difference is possible near month boundaries compared with sunset-based reckoning.

Use conversions for curiosity, travel, and spreadsheet planning — not as a substitute for your mosque's announcement on Ramadan, Eid, or Hajj dates. Pair with the Ramadan date calculator for a full month window in a chosen Gregorian year.

Historical dates before modern tables may not match every archive. This converter focuses on practical forward planning with Umm al-Qura and tabular methods cited from published algorithms.