Hijri to Gregorian Converter
Date Calendar Converter
Convert accurately between Hijri and Gregorian dates.
Accurate Hijri to Gregorian Converter
Whether you are planning religious observances, translating official documents, or studying historical records, converting dates between the lunar Islamic calendar and the solar Gregorian calendar can be mathematically complex. Our free Hijri to Gregorian Converter handles the heavy lifting instantly, utilizing the universally recognized Tabular Islamic calendar algorithm for precise date translation.
How to Convert Dates
- Select Your Conversion Mode: Use the toggle buttons at the top of the tool to choose whether you want to translate a date from Hijri to Gregorian, or from Gregorian to Hijri.
- Select the Date: Use the convenient dropdown menus to set the exact Day, Month, and Year you wish to convert.
- Convert & Copy: Click the blue "Convert Date" button. The tool will instantly generate the corresponding translated date. You can then use the "Copy Result" button to save the date to your clipboard for easy pasting into documents or forms.
How Does the Calculation Work?
The Gregorian calendar is based on the sun (365.25 days), while the Hijri calendar is based on the moon (approx. 354 days). Because of this 11-day difference, the calendars are constantly shifting against each other. To get a rough mental estimate without a calculator, you can use these heuristic formulas:
Find Gregorian Year: G ≈ H − (H ÷ 33) + 622
Find Hijri Year: H ≈ G − 622 + ((G − 622) ÷ 32)
For exact day-to-day translation, our tool utilizes astronomical Julian Day Numbers (JDN) to mathematically bridge the two systems perfectly.