Years, months, and days
The tool separates full years from the months and days after the last birthday and also shows total days elapsed.
Dates
Exact age calculator
Find an age in years, months, and days for today or any reference date.
Completed age
36 years36 years, 6 months, and 22 days
Total elapsed—
Next birthday—
Completed age and exact age
Completed age counts full years since birth. The detailed result adds the months and days elapsed since the last birthday.
How age is calculated
Subtracting only the years can be wrong when the birthday has not occurred yet. This calculator compares the month and day first, counts full years, and then calculates the remaining months and days.
Past or future age
Change the reference date to find someone's age on a past date or their age on a future date.
Frequently asked questions
Does it calculate age automatically for today?
Yes. The reference field uses today's date by default, and you can change it.
How are February 29 birthdays handled?
In non-leap years, the anniversary is adjusted to the last available day of February.
Do total days include the day of birth?
No. They show full days elapsed between the birth date and reference date.
Are entered dates stored?
No. Everything is calculated in your browser, and Cuantalia does not send the entered dates to Analytics.