Date & Time
Age Calculator
Find the precise age between two dates, including total days and weeks for paperwork or milestone planning.
Exact years, months, and days between two dates.
Calendar difference
The calculator counts whole years, months, and days between the birth date and reference date. It also converts the gap into total days and weeks for quick comparisons.
How to use
- Enter the birthdate (or starting date).
- Set the reference date; leave it as today for a current age.
- Review the exact age along with total days and weeks displayed below.
Example
Input: Birthdate = 1995-01-01, Reference date = 2024-07-01
Output: Exact age = 29 years, 6 months, 0 days (10,783 total days)
FAQ & notes
Can I calculate future ages?
Yes. Set the reference date to any day in the future to see how old you or someone else will be on that date.
Why can’t the reference date be earlier than the birthdate?
Negative ages don’t make sense, so the calculator requires the reference date to be the same as or later than the start date.