The Difference Between Hijri and Gregorian Age

How does age calculation differ between the two calendars, and why does your Hijri age appear older? The difference isn't in the math, but rather in how each calendar structures its dates.

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What is the difference between the two calendars?

If you hear that your Hijri age is older than your Gregorian age, you might think there's a calculation error...
But in reality, there is no mistake.

The difference is simply that each calendar relies on a different method to structure its dates:

  • The Hijri calendar is based on the moon.
  • The Gregorian calendar is based on the sun.

And this is the main reason for the entire difference you see.

Why is your Hijri age older?

Because the Hijri year is shorter. The Hijri year is about 10 to 11 days shorter than the Gregorian year, and this difference repeats every year.

Over time, this difference adds up...
And that is why your Hijri age appears older than your Gregorian age.

Does this mean one is more accurate than the other?

No, both are correct, but each is used in a different context.

  • The Gregorian calendar is used in most systems around the world.
  • The Hijri calendar is used in some countries and for religious occasions.

So the issue isn't about being "right or wrong"...
It's about "which calendar you are using."

When do you need to know the difference between them?

You usually need to know this difference in situations like:

  • If your birth date on a document is written in a different calendar.
  • When comparing your age between Hijri and Gregorian.
  • When using different systems (some using Hijri and some using Gregorian).

In these cases, understanding the difference saves you from any confusion with the results.

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