Overview
Use this calculator to find the Hijri date matching any Gregorian day. It suits planning and correspondence but does not replace the official calendar adopted in your country.
Formula
The calculation follows Umm al-Qura, matching Gregorian days to Hijri days. A Hijri year has 12 lunar months and averages 354 days.
How it works
Pick the Gregorian date
Choose the day you want to convert.
Read the Hijri date
The Hijri day, month and year appear.
Check the note
Remember that month start can vary with moon sighting.
Worked examples
A family event
If a child was born on January 1, 2026, the tool shows the estimated Hijri date.
Travel planning
Compare Gregorian and Hijri dates to see whether a trip falls in Ramadan or Hajj season.
Frequently asked questions
How is this different from the official calendar?
Your country may use local moon sighting, so the month start can differ from the Umm al-Qura calculation.
Is the result accurate?
It is an estimate at day level and may shift by one day depending on the month start.
Why is the Hijri year shorter?
It follows 12 lunar cycles, about 354 days, instead of 365.
This calculator is for educational and informational purposes only and is not a substitute for professional advice.