Calculate
Age Calculator
Pick your date of birth (and optionally a date to calculate to) to see your exact age in years, months, and days, plus total days and your next birthday. Calculated locally.
Dates
LocalResult
FAQ
Common questions
It counts complete years, then remaining months, then remaining days, borrowing days from the correct calendar month — so leap years and month lengths are handled exactly.
Yes — set the “age at” date to any date; it defaults to today.
The exact number of days between the two dates.
No. All calculation happens in your browser.
Private by design
This runs entirely in your browser
No file or text you enter here is uploaded. Encoding and decoding happen on your device using native browser APIs — close the tab and nothing remains on a server.