Hijri Date Converter

By the Age-Finder team · Last updated 7 November 2026

Leave the Gregorian date empty to see today, or type a Hijri date from 1 to 1600 AH. The result names the calendar source it used.

How to Use the Hijri Date Converter

Pick a direction first: Gregorian to Hijri, or Hijri to Gregorian. For a Gregorian date, choose the day and month and type the year. Leave all three empty and select Convert to see today. For a Hijri date, choose the day and the Hijri month and type the Hijri year, for example 1448.

The day list only shows days that exist in the month you picked. If you type a day the month does not have, the converter moves it to the last day of the month and says so.

The result shows the date in the other calendar, the date in Arabic script, the weekday, the day of the Hijri year, the length of the Hijri month and, for past dates, the number of Hijri years since.

It also says which calendar source it used. Four quick chips sit under the form: Today in Hijri, 1 Ramadan 1447, 1 Muharram 1448 and 1 Jan 2000. One tap fills the form in and converts at once.

If a date does not exist, the converter says so plainly. A bad Gregorian date gives “That date is not valid.

Please check it.” A Hijri date outside the tables gives “That Hijri date does not exist. Please check the day.” A Hijri year outside 1 to 1600 gives “Please enter a year from 1 to 1600.”

The Hijri Calendar in Brief

The Islamic calendar is purely lunar. Each month begins with the new crescent Moon, so months have 29 or 30 days and a year has 354 or 355 days.

That is about 11 days shorter than a Gregorian year, which is why Ramadan and the two Eids move earlier by about 11 days every Gregorian year and pass through every season over roughly 33 years.

Years are counted from the Hijra, the migration of the Prophet Muhammad from Mecca to Medina in 622 CE, and are written with the letters AH, short for Anno Hegirae, “in the year of the Hijra”.

Year 1 AH began on 1 Muharram 1 AH, which is 16 July 622 in the Julian calendar and 19 July 622 in the proleptic Gregorian calendar.

The Hijri day begins at sunset, not at midnight. That is why a date shown for the daytime can change in the evening: from sunset on Saturday 7 November 2026 the Hijri date is 28 Jumada al-Ula 1448 by the sunset reckoning, while the civil date stays 27 until midnight.

The names are old Arabic words for the seasons and customs of the time the calendar was fixed. Ramadan, for example, is named for scorching heat, even though the month now falls in every season as the calendar drifts.

Why Hijri Dates Can Differ by a Day

There is more than one way to decide when a Hijri month begins, and each way can give a different date for the same day.

Saudi Arabia’s Umm al-Qura calendar is calculated in advance from astronomical rules and is used for civil and administrative purposes. Many communities begin each month by sighting the new crescent with the eye, so the start of a month can be a day later, and it can differ between countries.

The arithmetic (tabular) Islamic calendar uses a fixed 30-year cycle of 354- and 355-day years and needs no observation at all.

One day shows the difference plainly. On Saturday 7 November 2026 the Umm al-Qura calendar says 27 Jumada al-Ula 1448, while Pakistan’s Central Ruet-e-Hilal Committee says 26. Same day, same Moon, two authorities.

For religious dates such as the start of Ramadan or Eid, follow the announcement of your local religious authority. The converter is the right tool for planning, records and finding the Hijri date of a past event.

How the Umm al-Qura Calendar Is Calculated

Since 1423 AH (15 March 2002) the rule is this: on the 29th day of a month, if the geocentric conjunction, the astronomical new moon, occurs before sunset at Mecca and the moon sets after the sun at Mecca, the next day is the 1st of the new month.

If either condition fails, the month has 30 days.

The calendar is computed at KACST, the King Abdulaziz City for Science and Technology in Riyadh, from modern astronomical theories of the Sun and Moon. It has been the official civil calendar of Saudi Arabia since 1925 (1343 AH).

Before AH 1420 the month began when the Moon’s age at sunset in Riyadh was at least 12 hours. In AH 1420 to 1422 the rule was the moonset-only rule: moonset after sunset at Mecca.

The calendar is civil only. Its makers state that the first visual sighting of the crescent can fall up to two days after the calculated date, and the crescent is visible to the naked eye on the first evening in only about one month in four.

In 2007 the Fiqh Council of North America, the Islamic Society of North America and the European Council for Fatwa and Research adopted the same parameters for their calculated calendar.

How the Converter Works

For dates from 1420 to 1484 AH (17 April 1999 to 9 May 2062), the converter uses the Umm al-Qura table built into the page: one row per Hijri year, one character per month, 9 for 29 days and 0 for 30 days.

Every day of it was checked against a second, independent source: the Unicode calendar data built into modern browsers for 1420 to 1450 AH, and a separate Umm al-Qura dataset for later years.

For other dates from 1300 to 1600 AH (about 1882 to 2174), it uses the Umm al-Qura tables that modern browsers include in their Unicode calendar data.

Only outside that range, or in a browser without Islamic calendar data, does it fall back to the arithmetic Islamic calendar, which was checked against the Unicode version of that calendar for every day from 1900 to 2100.

The result always says which source was used, so you can see whether the date came from the official table, the browser tables or the arithmetic calendar. On the Gregorian side the converter accepts years 1000 to 9999. On the Hijri side it accepts years 1 to 1600 AH.

The Twelve Months of 1448 AH

1448 AH runs from Tuesday 16 June 2026 to Sunday 6 June 2027 and has 355 days. The table gives every month’s start date, its length and the key day inside it.

Key Dates in 1447, 1448 and 1449 AH

The dates below are Umm al-Qura dates. Each one can fall a day later where months begin by moon sighting.

Ramadan 1448 has 29 days in the Umm al-Qura calendar, so Eid al-Fitr is Tuesday 9 March 2027. Where Ramadan is observed as 30 days, Eid falls on Wednesday 10 March 2027. Isra and Mi’raj, 27 Rajab, falls twice in 2027: Tuesday 5 January (1448) and Saturday 25 December (1449).

Your Age in Hijri Years

Because a Hijri year is about 11 days shorter, your age in Hijri years is slightly higher than your age in Gregorian years: roughly one extra Hijri year for every 33 Gregorian years.

Take 14 May 1990. In the Umm al-Qura calendar it is 19 Shawwal 1410. Someone born that day is 36 in Gregorian years in late 2026, but has already passed 37 Hijri years.

The count is 1448 minus 1410, which is 38, minus 1 because the 38th Hijri birthday, 19 Shawwal 1448, falls on Saturday 27 March 2027 and has not happened yet.

The converter shows the count for you: convert any past date and the result gives the number of Hijri years since it. A date observed locally at the time can differ by a day, especially for older birth dates, so a birth date converted from memory is a planning date, not a record.

Convert a Date by Hand

The arithmetic calendar converts a Gregorian date without any table, by the Kuwaiti algorithm. Work it for today, 7 November 2026.

First, find the Julian Day Number of the Gregorian date. For 7 November 2026 it is 2461352. Any Julian Day table or date library gives it. Then take l = 2461352 – 1948440 + 10632 = 523544.

Then take n = (523544 – 1) / 10631, rounded down, which is 49, and l = 523544 – 10631 x 49 + 354 = 2979. Then take j = 8, from the cycle formula: ((10985 – 2979) / 5316, rounded down) x ((50 x 2979) / 17719, rounded down) = 1 x 8.

Then take l = 2979 – ((30 – 8) / 15, rounded down) x ((17719 x 8) / 50, rounded down) + 29 = 2979 – 2835 + 29 = 173.

Then take m = (24 x 173) / 709, rounded down, which is 5, and d = 173 – (709 x 5) / 24, rounded down, which is 173 – 147 = 26. Then take y = 30 x 49 + 8 – 30 = 1448. The answer is 26 Jumada al-Awwal 1448.

The arithmetic calendar says 26. The Umm al-Qura table says 27. The one-day gap is the method, not a mistake. The arithmetic calendar repeats a fixed 30-year cycle, with leap years 2, 5, 7, 10, 13, 16, 18, 21, 24, 26 and 29, when Dhu al-Hijjah has 30 days, while Umm al-Qura follows the sky.

Proof on this page: 1448 AH has 355 days in the Umm al-Qura table, but year 8 of the 30-year cycle (1448 mod 30 = 8) is not a leap year in the arithmetic calendar, so the arithmetic 1448 has 354 days.

Use the arithmetic calendar for dates the Umm al-Qura table does not cover, and the Umm al-Qura calendar for dates it does.

How This Converter Compares

Three converters rank above this one for the same query, and each does something this page does not. The table sets them side by side so the difference is plain to see.

What the converter still cannot do: pick a date from a calendar, count down to Ramadan or Eid, show a whole month or year at a glance, let you choose the tabular or astronomical calendar, or shift the date for a local moon sighting.

The guide covers three of those by hand: the 1448 month table gives the whole year at a glance, the key dates table gives the Ramadan and Eid countdowns from today, and the hand-conversion section shows what the arithmetic calendar gives. The rest waits on the tool itself.

Frequently Asked Questions

Keep Exploring

Day of the Week Calculator: find the weekday of any Gregorian date from the year 1000 to 9999, with the Zeller and Doomsday methods worked by hand.

Nepali Date Converter: convert dates between the Gregorian calendar and the Bikram Sambat calendar of Nepal, for BS 2000 to 2090.

Date Calculator: add or subtract years, months, weeks and days from any date, with the order of operations shown.

Moon Phase Calculator: see the Moon’s phase, age and illumination for any date, worked out by the Meeus method.

Sources

R. H. van Gent, Utrecht University: The Umm al-Qura Calendar of Saudi Arabia (how the official calendar is calculated)

R. H. van Gent: The Astronomical Rules Governing the Umm al-Qura Calendar

Unicode CLDR: Calendar data (the Islamic calendars used to cross-check every day)

Moonsighting.live: Islamic Calendar 2027: Hijri Dates, Holidays