Why Hijri and Gregorian Ages Differ
Your age expressed in Hijri years is usually a little higher than the same age expressed in Gregorian years. A Hijri lunar year normally contains 354 or 355 days, while a Gregorian solar year contains 365 or 366 days. This difference accumulates over time.
How to Calculate Age in Both Calendars
Start with an accurate birth date and identify which calendar it uses. Convert the date with a reliable calendar converter when necessary, then calculate the interval using dates from the same calendar system.
For a precise Gregorian result in years, months, and days, use the online Age Calculator. Avoid estimating an official age by multiplying it by a fixed ratio, because calendar months and leap-year rules require date-aware calculations.
Which Result Should You Use?
- Use Gregorian age when a form or authority uses Gregorian dates.
- Use Hijri age when the requested date is explicitly Hijri.
- Keep the original birth date exactly as recorded on official documents.
Avoid Mixing Calendar Systems
A common error is entering a Hijri birth date and comparing it directly with a Gregorian current date. Both dates must use the same system before the elapsed time is calculated.
The difference between the two ages is normal and does not mean either answer is inherently wrong. Each describes elapsed time according to a different calendar. For everyday Gregorian calculations, calculate your age here.