What do the “days” in the result mean?

Days are the remainder after full months, not total lifetime days. For a single day count between two dates, use the days-between calculator.

How do I count days until my next birthday?

This tool measures elapsed age, not a future countdown. Put today and your next birthday into days-between or the countdown-to-date tool.

Why isn’t subtracting the years enough?

Calendar-year subtraction doesn’t show whether this year’s birthday has already passed. Month and day move the boundary — that’s why the result is years, months, and days.

Does the calculator account for leap years?

Yes. When the range crosses 29 February in a leap year, month and day remainders follow the real calendar.

Age Calculator

Calculate exact age in years, months and days

Updated for 2026

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Enter date of birth

Exact age in years, months and days

Date of birth

As of date (optional)

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Frequently asked questions

Accordion answers; the same Q&A is in FAQ structured data for search engines.

Enter your date of birth and optionally an as-of date (usually today). The tool counts full years, then remaining months and days on a real calendar, including leap-year Februaries.

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