How does this age calculator count months and days?
It subtracts the birth date from the target date, then borrows days and months using the actual calendar month lengths.
Age Calculator
Age Calculator
Calculate age in years, months, days, and total days between a birth date and any target date.
Age
6 months and 8 days
13,338 total days
How it works
1
Enter a birth date
Choose the original date you want to measure from.
2
Choose the target date
Use today or any future or past date after the birth date.
3
Copy the result
Copy the headline age or use the detailed months, days, and total-day values.
FAQ
Can I calculate age for a future date?
Yes. Change the Age on date to calculate how old someone will be on any future day.
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