Age Calculator
Find your exact age, or the time between any two dates, down to the year, month, and day.
Dates
Exact age, calculated like a calendar would
This calculator counts full years first, then full months, then remaining days — the same way you'd count by hand on a calendar. That means it correctly handles months of different lengths and leap years, so the result matches what you'd get counting manually, just instantly.
Not just for birthdays
Swap the "birth date" for any start date to find the exact duration between two events — how long a project ran, the time since an anniversary, or the days remaining until a deadline.
Also useful: GPA Calculator and Tip Calculator.
Frequently asked questions
The calculator counts full years between the two dates, then full months remaining, then remaining days — the same way you'd count on a calendar, so it correctly handles different month lengths and leap years.
Yes — enter any start and end date to get the exact duration between them, useful for anniversaries, deadlines, or how long an event lasted.
Yes — the calculation is based on actual calendar dates, so leap years and varying month lengths are automatically handled correctly.