What this tool does
The age calculator works out your exact age from your date of birth to today. It shows your age in years, months and days, and also the totals: how many months, weeks and days you have lived.
How age is calculated
The tool compares your birth date with the current date, carrying over days and months correctly (including the right number of days in each month) so the result is precise rather than a rough year count.
How to use it
- Enter or pick your date of birth.
- Calculate to instantly see your age and the lifetime totals.
Common uses
- Checking eligibility for age-restricted services or exams.
- Counting down to a birthday or anniversary.
- Filling forms that need age in completed years.
- Fun facts like how many days or weeks you've been alive.
The calculation uses your device's current date, so make sure your clock is set correctly.