How age is calculated
Your age is the time from your date of birth to today. Because months differ in length and leap years add a day every four years, this calculator counts complete years first, then remaining months and days.
Frequently asked questions
How is exact age worked out?
The calculator counts full years since your birth date, then leftover months and days, accounting for varying month lengths and leap years.
Does it handle leap years?
Yes.
Is my data saved?
No — everything runs in your browser.