Islamic Calendar Tools
Hijri to Gregorian Converter
Enter any Hijri date and get its exact Gregorian equivalent — with weekday, month name, and a Gregorian‑to‑Hijri toggle — in under a second.
🌙 Runs entirely in your browser — no sign‑up, nothing sent to a server
Enter a date and press Convert to see the result here.
Outer ring: Hijri month · Inner ring: Gregorian month
Understanding The Tool
What Is a Hijri to Gregorian Converter?
A Hijri to Gregorian converter is a calculation tool that translates a date from the Islamic lunar (Hijri) calendar into its corresponding date on the civil Gregorian (solar) calendar. Because the Hijri year runs roughly 10–12 days shorter than the Gregorian year, the same Hijri date lands on a different Gregorian date every year — which is exactly what a Hijri to Gregorian converter is built to resolve, instantly and without manual lookup tables.
This particular Hijri to Gregorian converter uses a local, deterministic tabular algorithm based on Julian Day Numbers, so every conversion happens instantly in your browser with no external date service involved.
Under The Hood
How This Hijri to Gregorian Converter Works
- Enter the Hijri date. Pick the day, month, and AH year you want to convert (or switch the toggle to convert the other direction).
- The date is converted to a Julian Day Number. This is a single, continuous day-count used by astronomers and calendar scientists to bridge any two calendar systems accurately.
- The Julian Day Number is converted into a Gregorian date. The same day-count is decoded back into a year, month, and day on the Gregorian calendar.
- The weekday is calculated. The tool works out which day of the week the resulting date falls on.
- Results appear instantly. The astrolabe dial rotates to the matching month, and you can copy, print, or download the result.
- Accepts any valid Hijri day, month, and year (not just today’s date)
- Returns the full Gregorian date, including the weekday name
- Runs a deterministic, local calculation — no external API dependency
- Works in both directions: Hijri → Gregorian and Gregorian → Hijri
- Lets you copy, print, or download the converted date
- Is keyboard-accessible and usable on mobile
Quality Checklist
What Should a Hijri to Gregorian Converter Include?
A reliable Hijri to Gregorian converter should do more than spit out one number. At minimum, it should handle the full range of Hijri months and years, clearly label which calendar system each date belongs to, and give you a result you can actually use — copy it into a document, print it, or save it for later.
See It In Action
Worked Example
Here’s what the Hijri to Gregorian converter returns for 1 Ramadan 1447 AH:
| Field | Value |
|---|---|
| Hijri date entered | 1 Ramadan 1447 AH |
| Converted Gregorian date | 18 February 2026 |
| Day of week | Wednesday |
| Calculation method | Local tabular (Julian Day Number) algorithm |
Who Uses This
Who This Converter Is Built For
Worship & Fasting Planning
Quickly find the Gregorian date for Ramadan, Islamic holidays, or a fasting day marked on the Hijri calendar.
Genealogy & Historical Research
Convert Hijri dates found on old records, manuscripts, or family documents into a Gregorian date you can cross-reference.
Business & Legal Documents
Translate Hijri-dated contracts, certificates, or correspondence for use in Gregorian-dated paperwork.
Travel & Event Planning
Work out exactly which Gregorian day an Islamic event or booking date falls on before you finalize plans.
Getting Accurate Results
Best Practices When Converting Hijri Dates
- Double-check the Hijri year — a one-year slip is the most common input mistake
- Remember tabular calculators can differ by a day from moon-sighting–based local announcements
- For religious observance dates, confirm with your local mosque or authority when precision matters
- Use the AH year, not the Gregorian year, when entering a Hijri date
For background on how civil Hijri calendars are calculated and standardized, see the Umm al-Qura calendar reference on Wikipedia.
Avoid These
Common Mistakes When Converting Hijri Dates
- Entering the Gregorian year into the Hijri year field (they’re rarely the same number)
- Assuming every tabular Hijri to Gregorian converter will match a moon-sighting announcement exactly
- Forgetting that Hijri months don’t line up with fixed Gregorian months year to year
- Mixing up the Hijri month order — always confirm the month name, not just its number
Questions
Frequently Asked Questions
How accurate is this Hijri to Gregorian converter?
This Hijri to Gregorian converter uses a tabular (arithmetic) calculation, which is highly consistent and reproducible but can occasionally differ by a day from dates set by actual moon sighting in a given country or region.
Can I convert a Gregorian date to Hijri with this tool?
Yes. Use the “Gregorian → Hijri” toggle above the form to switch the conversion direction; the same converter handles both.
Does this Hijri to Gregorian converter require an internet connection?
No. Once the page has loaded, the Hijri to Gregorian converter runs entirely in your browser and doesn’t send your date to any server.
Why do Hijri dates shift earlier every Gregorian year?
The Hijri calendar is lunar and its year is about 10–12 days shorter than the Gregorian solar year, so any fixed Hijri date drifts earlier against the Gregorian calendar each year.
Can I use this tool for official or religious rulings?
Treat results from this Hijri to Gregorian converter as a fast reference. For religious rulings such as the start of Ramadan or Eid, confirm with your local mosque or Islamic authority.
Keep Exploring
Related Reading
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