Hijri, Gregorian and Solar Date Converter
Convert dates between the Hijri, Gregorian and Solar calendars easily, and see the matching Hijri, Gregorian and Solar date with the month, year and leap-year status — all on one page.
Date Converter
A guide to converting dates between calendars
This page combines a fast conversion tool with a complete learning guide. Enter any date in the tool above to get your date conversion result in all three calendars instantly, then read this guide to understand the differences between the Hijri, Gregorian and Solar calendars, how to read the result accurately, and when you need date conversion in everyday and official life.
How to use the date converter step by step
- Choose the conversion typePick the right tab: from Gregorian, from Hijri, or from Solar.
- Enter the dateType the day, month and year in the three fields shown.
- Press convertClick "Convert" and the tool computes the matching date instantly.
- Read the resultSee the weekday, the matching calendars and the details table.
What is the date converter tool?
The date converter is a free service that helps you find the matching date between the Hijri, Gregorian and Solar calendars in one place, with no manual calculation. You type the day, month and year, choose the conversion direction, and the tool shows the resulting date together with the weekday, month number and year, and displays the matching calendars at the same time. It is useful for anyone tracking Islamic occasions, filling in documents that ask for both the Hijri and Gregorian dates, or comparing an old date between two calendars — and it works the same way on phones and computers.
How does date conversion work?
Conversion works by tying each date to a single serial day number, then recomputing it under the rules of each calendar. The Gregorian calendar is solar and mathematically fixed, while the Hijri calendar relies on the lunar month lengths adopted on this site, and the Solar calendar begins at the spring equinox. That is why a single Gregorian day can match a Hijri day that differs by one depending on the authority that follows the moon sighting. The tool shows the result using the calculations used on this site as a quick, clear reference, keeping the Gregorian date fixed and the Solar date available for comparison.
A brief background on the Hijri calendar and its relation to other calendars
The Hijri calendar began with the Prophet's migration from Mecca to Medina, an event taken as the start of the Islamic era. The Hijri year is made of twelve lunar months, each starting with the sighting of the crescent, so a month lasts twenty-nine or thirty days depending on the real lunar cycle. Because the lunar year is about eleven days shorter than the solar year, Islamic occasions move across the Gregorian seasons over the years, so Ramadan, for example, sometimes falls in summer and sometimes in winter. The date converter helps you link this lunar system to the fixed solar Gregorian calendar and to compare it with the Solar Jalali calendar, giving you a clear picture that brings the three systems together in one place and makes it easy to understand the relationship between them and to read any date with confidence.
The difference between the Hijri, Gregorian and Solar calendars
Three calendars that differ in basis and use; knowing the difference helps you read the conversion result with confidence.
The Hijri calendar
A lunar calendar whose year is twelve lunar months, about 354 days.
Where it is used: Setting Islamic occasions such as Ramadan, Hajj and the two Eids.
It moves about 11 days earlier each year versus the Gregorian, and its start may differ by a day with the moon sighting.
The Gregorian calendar
A solar calendar with a year of 365 or 366 days, the most widely used in the world.
Where it is used: Official and everyday appointments and international dealings.
Mathematically fixed, so the Gregorian day does not differ between authorities.
The Solar calendar
A solar (Jalali) calendar that begins at the spring equinox, with a year matching the Gregorian in length.
Where it is used: Iran, Afghanistan and some neighbouring regions.
It appears in the conversion result for comparison when data is available.
Practical date-conversion examples
Illustrative examples for reading the result; values are computed the same way as the tool. Values are in year-month-day format.
From Gregorian to Hijri
Enter a Gregorian date to see its matching Hijri date.
From Hijri to Gregorian
Enter a Hijri date to see its matching Gregorian date.
Comparing all three calendars
One date shown in Gregorian, Hijri and Solar together.
When do you need date conversion?
Important notes on date-conversion accuracy
- The Hijri date may differ by one day depending on the local moon sighting or the authority adopted in each country.
- The result is based on the calculations used on this site and is a quick reference, not a replacement for an official announcement.
- The Gregorian date is mathematically fixed and does not change between authorities.
- The Solar date appears for comparison when the required data is available.
Useful tools and pages after converting a date
Links that complete your journey after converting your date.
Frequently asked questions about date conversion
Can I convert an old date?
Yes, you can enter earlier dates within the supported range, and the tool shows the matching date in the other calendars.
Is the Hijri date result final?
The result is a quick calculated reference, and the start of a month may differ by one day from the official announcement depending on the local moon sighting.
Why might the Hijri date differ by one day?
Because the start of a Hijri month depends on the crescent sighting, which can differ from one country to another, so some authorities are a day ahead of or behind the astronomical calculation.
What is the difference between date conversion and the Hijri calendar?
Date conversion gives you a single matching date across calendars, while the Hijri calendar shows a whole month of days in a monthly grid.
Can the tool be used for official appointments?
The tool is good for planning and reference, but official appointments should follow the calendar officially adopted in your country, such as the Umm al-Qura calendar.
Does the tool show the weekday?
Yes, the result shows the weekday (such as Sunday or Monday) alongside the date in the matching calendars.
Does the converter support the Solar calendar?
Yes, the tool shows the matching Solar date within the result when the required data is available.
What is the best way to check today's Hijri date?
Open the "Today's Hijri date" page on the site to get the current day directly in Hijri and Gregorian.
Can I compare more than one calendar in the same result?
Yes, the result line shows the Hijri, Gregorian and Solar dates together so you can compare them at a glance.