About Age Calculator
Get your exact age in years, months, and days. Enter your birth date and optionally an "as of" date (e.g. for a past or future reference). Calculation is done in your browser — no data is sent to any server.
Frequently Asked Questions
How is age calculated?
We compute the difference between your birth date and the "as of" date (or today). Years, months, and days are counted so that each step is a full unit (e.g. one more month only when the day-of-month has been reached or passed).
Is my data sent to a server?
No. All calculation happens in your browser. No dates are uploaded.
What if I was born on the 31st and "as of" is in a shorter month?
We use the last day of the month when the target month has fewer days (e.g. Feb 28/29). So the age is consistent and avoids invalid dates.