Age in Hijri Years Calculator

Enter your birth date to see your age counted in Hijri (Islamic) lunar years.

Reviewed by the ToolNestr Editorial Team — July 2026

Disclaimer: For general guidance only. These tools use standard, widely accepted calculations and values, but rulings differ between scholars and schools of thought. Calculated Hijri dates, prayer/Sehri/Iftar times and Qibla direction are based on astronomical calculation and may differ from local moon-sighting or measurement. For Zakat, Khums, inheritance and other religious or financial obligations, please verify with a qualified scholar before acting.

Your birth date (Gregorian)

The shorter lunar year means a higher count of Hijri years over the same lifespan.

How your Hijri age is calculated

Your age is usually counted in Gregorian (solar) years, but the Islamic tradition counts time in Hijri (lunar) years. Because a lunar year of about 354 days is roughly 11 days shorter than a solar year, a person’s Hijri age is always a little higher than their Gregorian age. This calculator converts both your birth date and today’s date to the Hijri calendar and measures the gap between them in Islamic years, months and days.

The conversion uses the Umm al-Qura calendar built into your browser, so the result is consistent and computed entirely on your device. The headline figure is your full Hijri age, and the breakdown shows the months and days on top. For comparison, the tool also shows your ordinary Gregorian age and the extra years that the lunar count adds.

This is useful for understanding your age the way it would be recorded historically in Islamic documents, for marking lunar birthdays, or simply out of curiosity. Since Hijri months alternate between 29 and 30 days, treat the month-and-day portion as a close estimate while the year count remains reliable.

Worked example

Someone born on 1 January 1990 is about 35 Gregorian years old today. Converted to lunar years, that same span is roughly 36 Hijri years — about one extra year gained over 33 years of life.

Frequently asked questions

Why is my Hijri age higher than my Gregorian age?

The Hijri year is about 354 days, while the Gregorian year is about 365 days. Because lunar years are shorter, more of them fit into the same span of time, so your age in Hijri years is slightly higher.

How big is the difference?

The lunar and solar years differ by roughly 11 days each year. Over a lifetime this adds up: about one extra Hijri year for every 33 Gregorian years.

How is the Hijri age calculated?

The tool converts both your birth date and today’s date to the Umm al-Qura Hijri calendar, then takes the difference in Hijri years, months and days.

Is this exact to the day?

Hijri months vary between 29 and 30 days, so the month-and-day breakdown is a close approximation. The Hijri year count itself is accurate.

Sources & references

This tool uses standard formulas and reference values from:

• The Qur’an — e.g. Surah an-Nisa (4:11–12, 4:176) for the fixed inheritance shares (fara’id).
• Sahih al-Bukhari & Sahih Muslim — hadith on inheritance, zakat and nisab thresholds.
• AAOIFI and recognized fiqh councils (e.g. Islamic Fiqh Academy) for contemporary rulings. aaoifi.com

Rulings differ between scholars and schools (madhahib), and calculated astronomical times/dates may differ from local sighting. Confirm with a qualified scholar before acting.