Date & Time Calculator
Age Calculator
Calculate exact age in years, months, and days from a birth date.
Current age
26 years
- Months
- 8
- Days
- 21
- Total days lived
- 9,761
How it works
Enter a birth date to see the exact age as of today — not just years, but the precise years, months, and days, and the total number of days lived. This accounts for varying month lengths and leap years automatically, which a rough "divide by 365" estimate doesn't.
Formula
Years = full years since the birth date Months = remaining full months since the last birthday Days = remaining days since the last full month
Example
Someone born March 31, 2000, checked on March 10, 2025, is 24 years, 11 months, and 7 days old — not yet 25, since this year's birthday hasn't happened yet.
Frequently asked questions
Why isn't my age just today's date minus my birth year?
Subtracting years alone ignores whether your birthday has happened yet this year. This calculator checks the exact month and day, so it only counts a full year once your birthday has actually passed.
Does this account for leap years?
Yes — the calculation is based on actual calendar dates and real month lengths (including February 29 in leap years), not a fixed 365-day approximation.