Age Calculator
This age calculator gives your exact age in years, months and days from a date of birth, plus the total number of days, hours and minutes lived. You can measure age as of today or any other date.
About this tool
This age calculator gives your exact age in years, months and days from a date of birth, plus the total number of days, hours and minutes lived. You can measure age as of today or any other date.
How to use it
- Enter the date of birth.
- Keep today's date or pick another "as of" date.
- Read the age in years, months and days and the totals in days, hours and minutes.
Good to know
- Years, months and days are counted on the calendar, so leap years and months of different lengths are handled correctly.
- Total days is the exact number of days between the two dates; hours and minutes are total days × 24 and × 1,440.
- You can set the "as of" date in the past or future, for example to find someone's age on a specific day.
- A date of birth after the "as of" date is flagged instead of producing a negative age.
Runs entirely in your browser — nothing you enter is uploaded or stored.
Frequently asked questions
How do I calculate my exact age?
Enter your date of birth and the calculator counts full years, then remaining months, then remaining days up to today — the same way age is counted on a calendar.
How are leap years handled?
The calculation uses real calendar dates, so February 29 and months with 28–31 days are accounted for automatically.
Can I find how old someone will be on a future date?
Yes. Change the "as of" date to any future day to see their age at that point.
How many days old am I?
The Total Days result shows exactly that, along with the equivalent in hours and minutes.