Age Calculator – Exact Age in Years, Months, Days

Most people know their age in years, but government forms, school admissions, job eligibility and sports categories need it in years, months and days — or even total days. Enter any date of birth and get all three instantly.

The formula

Calendar-accurate Y-M-D difference

FAQ

How is exact age different from what I say?

Someone born 15 August 2009 is "16" after August 2025, but before that birthday their calendar age is 15 years, N months and D days — which is what official forms ask.

Does this account for leap years?

Yes — the calculation uses real calendar dates, so February 29 birthdays and leap-year spans are handled correctly.

Can I use it for upcoming birthdays?

Yes, the result shows exactly how many days remain until the next birthday.

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