Find out exactly how old you are — in years, months, days, and more. Instant results, no sign-up.
Your Birth Date
Your Age
Related tools: Days Until My Birthday · Age Difference Calculator · Date Calculator
How Is Age Calculated?
This calculator counts the exact number of full years, months, and days between your date of birth and today (or any date you choose), accounting for varying month lengths and leap years — the same way age is counted on official documents.
Example
Someone born on January 15, 1995 checking their age on August 11, 2026 would be 31 years, 6 months, and 27 days old — having lived roughly 11,540 days.
FAQ
Why does my age in years differ from a simple year subtraction?
Because your birthday may not have occurred yet this year — the calculator only counts a year as complete once the birth month and day have passed.
Does this account for leap years?
Yes. The calculation is based on actual calendar dates, so leap years (like February 29) are handled automatically and correctly.
Can I calculate my age as of a future or past date?
Yes — change the “Calculate Age As Of” field to any date, past or future, to see your age at that point in time.
How is “total months lived” calculated?
It’s the total number of complete calendar months between your birth date and the selected date, which is useful for tracking infant or toddler age in months.