Gregorian. For Hijri, enter the equivalent Gregorian date.

Can I compute age on a future date?

Yes — use the reference-date field in advanced mode.

No, calculation is local to your browser.

Calendar-corrected subtraction — year, month, day with borrow when needed.

What if reference date is before DOB?

It errors — the reference must be on or after DOB.

Compute your age in years, months, and days — and your next birthday.

Quick utilityGeneral editable assumptionsGlobal-readyInteractive chart

Last updated: 2026-05-31

This calculator uses generic assumptions. Use advanced mode to override them for a more accurate result.

Source: default

Age = ref − DOB (calendar-corrected)

Gregorian or Hijri?: Gregorian. For Hijri, enter the equivalent Gregorian date.
Can I compute age on a future date?: Yes — use the reference-date field in advanced mode.
Is my data saved?: No, calculation is local to your browser.
How is age computed?: Calendar-corrected subtraction — year, month, day with borrow when needed.
What if reference date is before DOB?: It errors — the reference must be on or after DOB.

Results are estimates and not professional advice. Verify important decisions with a qualified professional.