CalcaTools

Hijri Date Converter | Convert Dates Between Gregorian and Hijri

Converts dates between the Gregorian and Islamic (Hijri) calendars in both directions. Enter any Gregorian date to see its Hijri equivalent, or any Hijri date to see the Gregorian date, using the Umm al-Qura calendar system. The tool also shows the weekday for both calendars so you can cross-check events and records.

Last updated: June 2026 · Free · No sign-up required

Civil calendar is deterministic; Umm al-Qura matches official Saudi gazette and may differ by ±1 day for some months.

Results

Enter values above and click Calculate to see your result instantly.

Quick reference

GregorianHijri (tabular)
2026-01-0112 Rajab 1447
2026-02-181 Ramadan 1447
2026-03-201 Shawwal 1447 (Eid al-Fitr)
2026-06-1026 Dhu al-Hijjah 1447

mosque Calculated to Shariah-compliant formulas

Every Islamic calculator on CalcaTools uses formulas from recognised Shariah authorities — the Hilal Committee's Hijri conversion tables, the MWL/ISNA/Umm al-Qura prayer-time methods, the four-school consensus for Zakat Nisab, and the Faraid distribution rules from classical fiqh. The exact authority is cited on every tool page.

menu_book Sunni & Shia rules side by side

For tools where the calculation differs between schools (Faraid inheritance, certain Zakat triggers, prayer-time conventions), we surface the choice as a selector and document the difference in the methodology block. Pick the school that matches your tradition — the answer adjusts.

savings Zakat with the live Nisab

Zakat tools fetch the current spot gold/silver price (or let you enter your local rate) so the Nisab threshold reflects today's value, not a stale figure from last year. The 2.5% rate is the standard hawl-based calculation; agricultural Zakat (1/10 or 1/20) is available on the dedicated Ushr calculator.

verified For guidance, not a fatwa

These calculators give you the number — they do not give a fatwa. For complex personal situations (inheritance with revoked rights, mixed-asset Zakat, late prayer makeup rules), please confirm with a qualified scholar in your tradition. We're here to help with the arithmetic, not to replace your local imam.

Interpretation guide

Calendar factDetail
Hijri year length354–355 days — 11 days shorter than solar
Months12 lunar months of 29–30 days
Tabular vs sightingArithmetic calendar may differ ±1–2 days from moon-sighting announcements
Epoch1 Muharram 1 AH = July 16, 622 CE (the Hijra)

lightbulb Worked example

Let's say you are using the Hijri Date Converter. Converts dates between the Gregorian and Islamic (Hijri) calendars in both directions. Enter any Gregorian date to see its Hijri equivalent, or any Hijri date to see the Gregorian date, using the Umm Enter the values that match your situation into the input fields and press calculate — using realistic numbers makes the result directly useful for you.

Result: The calculator instantly applies the formula Tabular Islamic calendar: 30-year cycle with 11 leap years of 355 days and returns the result with appropriate precision.

What this means: Read the result in the context of what you are measuring. The step-by-step breakdown lets you confirm the math and understand which input most affects the outcome.

Formula & methodology

Formula: Tabular Islamic calendar: 30-year cycle with 11 leap years of 355 days

The Hijri Date Converter is built on a well-established calculation method. It uses the formula Tabular Islamic calendar: 30-year cycle with 11 leap years of 355 days to turn your inputs into a reliable result. Converts dates between the Gregorian and Islamic (Hijri) calendars in both directions. Enter any Gregorian date to see its Hijri equivalent, or any Hijri date to see the Gregorian date, using the Umm al-Qura calendar The steps are shown on the page so you can follow the reasoning from input to output.

  1. Choose the direction: Gregorian → Hijri or Hijri → Gregorian.
  2. Enter the date.
  3. The tabular (arithmetic) Islamic calendar converts it deterministically.
  4. For religious observance, confirm against your local moon-sighting authority.

Example: 2026-06-10 → 26 Dhu al-Hijjah 1447 AH (official Umm al-Qura dates can differ by a day or two).

Authoritative source: Umm al-Qura — Royal Institute (Saudi Arabia)

Frequently asked questions

How do I convert a Gregorian date to Hijri?
Enter the required values into the input fields and press the calculate button. The tool applies the formula Tabular Islamic calendar: 30-year cycle with 11 leap years of 355 days and returns the result with a short explanation of each step, so you can check the working yourself.
Why does the result sometimes differ from Saudi announcements?
The Hijri Date Converter is free, private, and accurate: it runs entirely in your browser (no uploads, no accounts), applies the standard calculation, and explains each step so you can verify the result. Converts dates between the Gregorian and Islamic (Hijri) calendars in both directions. Enter any Gregorian date to see its Hijri equivalent, or any Hijri date to see the Gregorian date, using the Umm al-Qura calendar system. The tool also shows the weekday There is no limit on usage, and it works on any device.
Why is the Hijri year shorter?
The Hijri calendar is purely lunar: 12 lunar months of 29 or 30 days, totaling 354 or 355 days, compared with the solar year's 365 or 366. That is why Hijri dates drift about 11 days earlier each Gregorian year. The tabular calendar the converter uses fixes month lengths with a 30-year cycle of 11 leap years to keep the dates consistent and computable.
What does AH mean?
The Hijri Date Converter is a free online tool that converts dates between the gregorian and islamic (hijri) calendars in both directions. enter any gregorian date to see its hijri equivalent, or any hijri date to see the gregorian date, using the umm al-qura calendar system. the tool also shows the weekday. You enter a few values, and it returns an accurate result together with a step-by-step explanation, so it works as both a calculator and a quick reference for the underlying concept.
How do I estimate my Hijri age?
Subtract your birth year in the Hijri calendar from the current Hijri year. Because the Hijri year is about 11 days shorter, a Hijri age runs slightly ahead of a Gregorian age — at 30 Gregorian years you are roughly 31 in Hijri years. Enter your Gregorian birth date and the converter returns your exact Hijri age with the current Hijri date.
What does the Hijri Date Converter do?
Converts dates between the Gregorian and Islamic (Hijri) calendars in both directions. Enter any Gregorian date to see its Hijri equivalent, or any Hijri date to see the Gregorian date, using the Umm al-Qura calendar system. The tool also shows the weekday. The calculator takes your inputs, applies the standard calculation, and returns a clear result so you can make an informed decision without doing the math by hand.
What formula does the Hijri Date Converter use?
It uses the tabular Islamic calendar: a 30-year cycle containing 11 leap years of 355 days and 19 common years of 354 days, mapping each Hijri month start to a Gregorian date. This arithmetic calendar is deterministic and consistent, unlike a moon-sighting calendar that depends on actual observation. The result is an approximation that can differ by one day from local sightings.
Is the Hijri Date Converter free and private?
Yes — the Hijri Date Converter. There is no sign-up, no paywall, no trial, and no limit on how many calculations you can run. CalcaTools covers its costs with non-intrusive display advertising, so the calculator itself never asks for payment or restricts any feature.
How accurate is the Hijri Date Converter?
The Hijri Date Converter applies the standard formula: Tabular Islamic calendar: 30-year cycle with 11 leap years of 355 days. It is tested against published worked examples before launch and uses native double-precision arithmetic, so results are accurate to typical precision for the values you enter — with no intermediate rounding that could distort the answer.

Explore the full Islamic toolkit

Every CalcaTools Islamic calculator — zakat and charity, prayer times, the Hijri calendar, halal finance, and family tools — cross-checked against the Umm al-Qura calendar and classical fiqh references.

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