Age calculator
Enter a date of birth and get the exact age in years, months and days — plus the total number of days lived, useful for forms, insurance and official documents. The calendar math handles leap years and month lengths correctly. It runs entirely in your browser, works offline and stores nothing.
How to use
- Pick the date of birth from the calendar.
- The age updates instantly as years, months and days.
- Read the total-days figure for official paperwork.
- Change the date to test another age.
- No submit button needed — everything is live.
Why use Outilverse?
Precise calendar math with leap-year handling, unmatched by mental arithmetic or generic spreadsheets. It works offline, needs no account and never stores the date you enter.
FAQ
How is age calculated exactly?
Full years first, then remaining months, then remaining days — the standard method used on official forms, including leap years.
Is my date of birth stored?
No. The calculation happens in your browser and nothing is sent or saved anywhere.
Does it work for future dates?
A future date simply shows zero lived days — the tool treats it as a person not born yet.