Time
Age calculator
Find an exact age in years, months, and days.
Exact age
-
- Full ageChoose a birth date
- Total days-
- Next birthday-
Date calculations use the calendar dates entered, not the time of day.
How it works
How the Age Calculator works
Quick answer: Your exact age is the full years, months, and days between your birth date and today. Someone born June 15, 1990 is 36 years, 4 months, 5 days old on October 20, 2026.
Formula
Years = current year − birth year (minus 1 if the birthday has not happened yet this year)
Then count remaining full months and days, borrowing days from the previous month when needed.Total days counts calendar days between the two dates.
Worked example
Born June 15, 1990, measured on October 20, 2026: 36 years, 4 months, 5 days, 13,276 days in total. Next birthday: Jun 15, 2027.
Assumptions and limits
- Someone born on February 29 has a birthday on February 28 or March 1 in non-leap years depending on local convention; check which rule applies for legal purposes.
Frequently asked questions
How is exact age calculated?
Full years, months, and days between the birth date and today, accounting for leap years.
What does total days lived mean?
The straight count of days between the two dates.
How do I calculate age in days?
Count the calendar days between the birth date and the target date. The calculator does this exactly, including leap years.
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