Umm al-Qura & Astronomical Lunar Model
Islamic Lunar Calendar & Birthday Finder

Islamic Hijri Date & Muslim Birthday Converter

Convert any Gregorian date to find its exact Islamic month and year (AH), Arabic script, lunar age, and religious significance.

Example: 22/04/1981 converts to 17 Jumada al-Thani 1401 AH.

Try Sample Dates:
Why Your Islamic Birthday Moves 11 Days Each Year

The Islamic Hijri calendar is lunar-based, with 12 synodic months lasting ~354.36 days in total. Because the solar Gregorian calendar is 365.24 days, Islamic months and birthdays occur roughly 10 to 12 days earlier each Gregorian year, cycling through all four seasons every 33 years.

Hijri Lunar Conversion Result

Your Islamic Birthday & Date (AH)
16.5 Jumada al-Thani 1401 AH
١٦.٥ جمادى الثانية ١٤٠١ هـ
Day of Week: WednesdayMonth 6 of 12
Islamic Month Significance: Jumada al-Thani (جمادى الثانية)

The Second Freeze (Jumada al-Akhirah)

Age in Solar Years
45.4 yrs
Gregorian calendar basis
Age in Lunar Years
46.8 yrs
+1.4 years older in lunar time
Check the moon phase for this date:Moon Phase Calculator
Islamic Calendar Reference

The 12 Hijri Months & Their Religious Meanings

The Islamic calendar was established by Caliph Umar ibn al-Khattab starting from the year of the Prophet Muhammad's migration (Hijrah) from Mecca to Medina in 622 CE.

Month 1Sacred

Muharram

محرم

Forbidden / Sacred - The Islamic New Year

Month 2

Safar

صفر

Void / Emptying of homes

Month 3

Rabi' al-Awwal

ربيع الأول

The First Spring - Month of the Prophet's birth

Month 4

Rabi' al-Thani

ربيع الثاني

The Second Spring

Month 5

Jumada al-Awwal

جمادى الأولى

The First Freeze

Month 6

Jumada al-Thani

جمادى الثانية

The Second Freeze (Jumada al-Akhirah)

Month 7Sacred

Rajab

رجب

Respect / Honour - Month of Isra & Mi'raj

Month 8

Sha'ban

شعبان

Scattering / Preparation for Ramadan

Month 9

Ramadan

رمضان

Scorching Heat - Month of Fasting & Quran

Month 10

Shawwal

شوال

Lightness / Month of Eid al-Fitr

Month 11Sacred

Dhu al-Qi'dah

ذو القعدة

The Month of Truce / Rest

Month 12Sacred

Dhu al-Hijjah

ذو الحجة

The Month of Hajj Pilgrimage & Eid al-Adha

Frequently Asked Questions

What does AH mean in Islamic dates?

AH stands for Anno Hegirae (Latin for "In the year of the Hijrah"). It marks the start of the Islamic lunar calendar in 622 CE when Prophet Muhammad migrated to Medina.

Can there be a 1-day difference in Islamic dates?

Yes. While astronomical algorithms (like Umm al-Qura) provide exact mathematical dates, traditional Islamic calendar months begin with the physical sighting of the crescent moon (Hilal), which can occasionally vary by ±1 day depending on geographical location.