Hijri to Gregorian Date Converter
العربيةPick a direction, choose the day, month and year, and the converted date appears instantly with its weekday and the length of the Hijri month. Conversions follow the Umm al-Qura calendar used officially in Saudi Arabia.
Updated October 27, 2026Runs in your browser — nothing you enter is stored
Supported range: 1318–1500 AH (1900–2076 CE).
Hijri date
12 Rajab 1447 AH
Numeric: 1447/07/12
Gregorian date
1 January 2026
Numeric: 2026-01-01
Weekday
Thursday
Days in the Hijri month
30 days
Rajab 1447
How to use the converter
- 1Choose Gregorian → Hijri to find the Islamic date for a Western date, or Hijri → Gregorian for the reverse.
- 2Select the day and month, then type the year (for example 1448 or 2026).
- 3Read the result in words and numbers, with the weekday and how far the date is from today.
- 4Use Swap direction to convert the answer back and double-check it.
Hijri vs Gregorian: the key differences
The Hijri calendar is lunar. It counts from the Prophet Muhammad’s migration (Hijrah) from Makkah to Madinah in 622 CE and was adopted under Caliph Umar ibn al-Khattab. Its twelve months start with Muharram and end with Dhu al-Hijjah, and each month has 29 or 30 days, following the Moon.
The Gregorian calendar is solar, with 365 days or 366 in a leap year. A Hijri year (354 or 355 days) is therefore about 11 days shorter, so Islamic dates move about 11 days earlier every Gregorian year and pass through all the seasons in roughly 33 years.
| Feature | Hijri calendar | Gregorian calendar |
|---|---|---|
| Based on | The Moon | The Sun |
| Year length | 354 or 355 days | 365 or 366 days |
| Month length | 29 or 30 days | 28 to 31 days |
| Religious day begins | At sunset | At midnight |
| First month | Muharram | January |
What is the Umm al-Qura calendar?
Umm al-Qura is Saudi Arabia’s official Hijri calendar. It uses astronomical calculations for Makkah to decide in advance whether each month has 29 or 30 days, so any date can be converted precisely. It is the calendar printed on Saudi government documents.
Other countries sometimes start months on a different day because they rely on local sighting of the crescent or another arithmetic calendar, so you may see a one-day difference. The beginnings of Ramadan, Shawwal and Dhu al-Hijjah are also confirmed by sighting.
A quick way to estimate by hand
For a rough year conversion without a tool: Gregorian year ≈ Hijri year × 0.97 + 622, and Hijri year ≈ (Gregorian year − 622) × 1.03. For example, 1448 × 0.97 + 622 ≈ 2026. These formulas give the year only and can be one year off near its start; the exact day and month need the calendar tables this converter uses.
For today’s date see today’s Hijri date, and to work out an age in both calendars use the Hijri age calculator.
Frequently asked questions
How accurate is the conversion?
It uses the official Umm al-Qura tables built into your browser and was tested day by day from 1900 to 2076. Dates set by moon sighting can differ by one day.
Why does it say the date does not exist?
Hijri months can have only 29 days. If you choose the 30th of a 29-day month there is no matching day — pick the 29th or the 1st of the next month.
What range is supported?
1318 to 1500 AH, which is roughly 1900 to 2076 CE.
How many days are in a Hijri year?
354 or 355 days — about 11 days fewer than a Gregorian year.
Is the Hijri date the same in every country?
Not always. Some countries begin months by local sighting, so dates can differ by a day from the Saudi Umm al-Qura calendar used here.
When does a Hijri day begin?
Religiously, at sunset. Civil calendars, including Umm al-Qura, match each Hijri date to a Gregorian day that runs from midnight to midnight.