Age Calculator
Find your exact age in years, months and days from your date of birth — as of today or any other date.
Calculate age
Enter a date of birth and, optionally, a different "as of" date.
Result
- or 0
- or 0
- or 0 days
- or 0 hours
- or 0 minutes
- or 0 seconds
How this is calculated
Age is found by comparing calendar years, months and days between the two dates — not just dividing total days by 365 — so leap years and different month lengths are handled correctly.
How to use this calculator
- Enter the date of birth.
- Optionally change the "as of" date — otherwise today's date is used.
- Press Calculate to see the exact age breakdown.
FAQ
Frequently asked questions
How is exact age calculated?
By finding the calendar difference in years, months and days between your date of birth and the chosen date, accounting for varying month lengths and leap years.
Can I calculate my age on a future or past date?
Yes. Leave the "as of" date as today, or change it to any other date to see your age at that point in time.
Does the calculator account for leap years?
Yes. The calculation uses real calendar months and days, so leap years are handled automatically.
What if I enter a future date of birth?
The calculator will show an error, since a date of birth cannot be after the "as of" date.