Age Calculator
Enter a date of birth to see the exact age in years, months and days — plus total days lived and how far away the next birthday is.
Frequently asked questions
How is my age calculated exactly?
Your age is broken down into full calendar years, months and days. For example, from 15 March 2000 to 22 October 2026 gives 26 years, 7 months and 7 days — not a decimal approximation. The total days figure uses real calendar arithmetic including leap years.
Why is my age in days different from what another site shows?
Many sites estimate days as years × 365. That drifts by roughly 1 day every 4 years because of leap years. This calculator counts the actual number of days between the two dates.
Does it account for leap-year birthdays (29 February)?
Yes. If you were born on 29 February, your birthday is treated as falling on 1 March in non-leap years, which is the most common legal convention.