Check completed years and total time lived
The calculator shows completed years, total completed months and total calendar days. The month count is a separate total, not the leftover months after the years result.
Change the reference date to check age at an earlier event or a future date. The reference cannot be before the birth date.
How to use this tool
- Enter the birth date.
- Choose the date on which to calculate age.
- Read completed years, total completed months and total days.
Example
A person born on 1 January 2000 has completed 25 years on 1 January 2025. On the previous day, they have completed 24 years.
Common questions
Can I calculate age on a past date?
Yes. Replace the reference date with the date of the event you want to check.