Converting between the Islamic Hijri calendar and the Gregorian calendar is a common need for Muslims worldwide — whether for determining the dates of Ramadan, planning Hajj, calculating Zakat due dates, or simply knowing what today's Islamic date is. This guide explains how the two calendars relate to each other and provides practical conversion methods.
📅 Need an instant conversion? Use our Free Hijri Date Converter for accurate conversions in both directions.
The Gregorian calendar (also called the Western or Christian calendar) is a solar calendar with 365 days per year (366 in leap years). It is the most widely used civil calendar in the world.
The Hijri calendar (also called the Islamic or lunar calendar) is a lunar calendar with 354 or 355 days per year. Each month begins with the sighting of the new crescent moon, making it approximately 10-11 days shorter than the Gregorian year.
There are several reasons why Hijri-Gregorian conversion is not as simple as adding or subtracting a fixed number:
For a rough conversion, you can use these formulas:
Hijri to Gregorian: Gregorian Year ≈ Hijri Year + 622 − (Hijri Year / 33)
Gregorian to Hijri: Hijri Year ≈ (Gregorian Year − 622) × (33 / 32)
These formulas give approximate results. For exact dates, an algorithmic approach or a reliable converter tool is necessary.
| Islamic Event | Hijri Date | Gregorian Date (Approx.) |
|---|---|---|
| Ramadan Start | 1 Ramadan 1447 | ~February 17, 2026 |
| Eid al-Fitr | 1 Shawwal 1447 | ~March 19-20, 2026 |
| Eid al-Adha | 10 Dhul Hijjah 1447 | ~May 27, 2026 |
| Islamic New Year | 1 Muharram 1448 | ~June 26, 2026 |
| Ashura | 10 Muharram 1448 | ~July 5, 2026 |
The Umm al-Qura calendar is the official civil Islamic calendar used in Saudi Arabia. It uses astronomical calculations to predict the start of each month based on the moon's position relative to Mecca. Many Islamic date converters, including ours, use the Umm al-Qura algorithm as it provides the most widely accepted standard for calendar conversion.
However, some countries and communities prefer to rely on actual moon sighting, which can cause dates to differ by one or two days from the calculated calendar. This is why Islamic events may be observed on slightly different days in different parts of the world.
Check out our complete guide to the 12 Islamic months to understand the full Hijri calendar system, including the meanings of each month name and their significant events.
📅 Convert any date instantly with our Hijri Date Converter — supports both Hijri-to-Gregorian and Gregorian-to-Hijri conversions.
You can use our free Hijri Date Converter tool for instant, accurate conversions. For manual approximation, use the formula: Gregorian Year ≈ Hijri Year + 622 − (Hijri Year / 33). However, this only gives approximate results.
Today's Hijri date changes daily. Use our Hijri Date Converter or Islamic Months page to see the current Islamic date. The date may vary slightly depending on your location and moon sighting method.
Islamic months begin with the sighting of the new crescent moon, which depends on geographic location, weather, and the method used (actual sighting vs. calculation). This can cause dates to differ by 1-2 days between countries.
The Gregorian year 2026 corresponds roughly to the Islamic years 1447-1448 AH. The Islamic New Year 1448 is expected around June 26, 2026.
There is no fixed offset because the Hijri year is shorter. The gap changes each year. The most reliable method is using an algorithmic converter based on the Umm al-Qura calendar or similar astronomical calculations.
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