🗓️ Calendar Converter
One date, every calendar: see today (or any date) in the Hijri, Hebrew, Persian, Indian, Buddhist, Julian and more — and convert any of them back to Gregorian.
| Calendar | Date |
|---|---|
| Gregorian | July 18, 2026 |
| Islamic (Umm al-Qura) | Safar 4, 1448 AH |
| Islamic (tabular) | Safar 2, 1448 AH |
| Persian (Solar Hijri) | Tir 27, 1405 AP |
| Hebrew(display only) | 4 Av 5786 |
| Indian National (Saka) | Asadha 27, 1948 Śaka |
| Buddhist (Thai) | July 18, 2569 BE |
| Coptic | Epep 11, 1742 AM |
| Ethiopian | Hamle 11, 2018 AM |
| Minguo (ROC) | July 18, 115 Minguo |
| Japanese (era)(display only) | July 18, 8 Reiwa |
| Chinese(display only) | Sixth Month 5, 2026(bing-wu) |
| Julian | 5 July 2026 (Julian) |
| Julian Day Number | JDN 2461240 |
Convert back to Gregorian
Thursday, June 26, 2025
Gregorian · 2025-06-26 · resolves Islamic (Umm al-Qura): Muharram 1, 1447 AH
Forward conversion uses your browser's built-in ICU calendar data; reverse inverts it exactly. All computed on your device.
How the calendar converter works
Forward conversion uses the calendar data built into your browser — the same ICU/CLDR database your operating system uses — so a Gregorian date is expressed in each system exactly as the standard defines it, with no hand-written calendar maths to get wrong. Reverse conversion (a Hijri or Persian date back to Gregorian) inverts that mapping precisely, since each calendar's year-month-day advances strictly with time. Everything is computed on your device.
A note on the Hijri date: the Umm al-Qura calendar shown here is the Saudi civil calendar, the usual answer to "what is the Islamic date", but religious observances often depend on the actual sighting of the moon and can differ by a day. The Hebrew and Chinese calendars have leap months, which is why they are shown for reference but not offered for reverse conversion here — enter those the other way (Gregorian in) instead.
Frequently asked questions
Which calendars does this convert between?
Gregorian to and from Islamic/Hijri (Umm al-Qura and tabular), Persian (Solar Hijri/Jalali), Indian National (Saka), Buddhist, Coptic, Ethiopian, Minguo (ROC), Julian and Julian Day Number — plus display of the Hebrew, Japanese-era and Chinese calendars.
How accurate is the Hijri conversion?
It uses the Umm al-Qura (Saudi civil) calendar from your browser's ICU data, which is the standard civil answer. Because some Islamic dates are fixed by moon sighting rather than calculation, a religious date may fall a day either side of the civil one.
Why can't I convert a Hebrew or Chinese date back to Gregorian here?
Both are lunisolar calendars with leap months, so a plain month number is ambiguous. This tool shows them forward (Gregorian in) reliably; for the reverse it offers the solar and lunar calendars that have a fixed twelve months.
Is the conversion done on a server?
No — every calendar system here ships inside your browser. Conversion runs locally and works offline; nothing you enter is transmitted.
What is a Julian Day Number?
A continuous count of days used in astronomy, starting from 1 January 4713 BC. It has no months — just a single number that increases by one each day (changing at noon universal time), which makes date arithmetic across any calendar trivial.
Related calendar tools
From the blog
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Hijri, Hebrew, Persian and Julian: How the World's Calendars Actually Work
Why is the Islamic year 1447 while the Gregorian is 2026? A guide to the world's major calendar systems — lunar, solar and lunisolar — how they differ, and how to convert any date between them in your browser.
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BS to AD (and Back): How the Nepali Bikram Sambat Calendar Works
Nepal runs on Bikram Sambat, about 56 years 8 months ahead of the Gregorian calendar — so 2024 AD is 2081 BS. Why BS months have no fixed length, how conversion actually works, and how to convert any date both ways.