Age Calculator
Find out exactly how old someone is, or how much time has passed since a date. Enter a birth date and this tool works out the calendar age and the elapsed time in years, months, and days, all without leaving your browser.
How to use
- Enter the birth date.
- The reference date defaults to today; change it if needed.
- Read the calendar age and the elapsed time.
Frequently asked questions
- How is calendar age calculated?
- It counts full years, months, and days between the birth date and the reference date, adjusting for varying month lengths and leap years.
- Does this match my legal age?
- Not always. Some countries and institutions use different age-counting rules. Check local regulations for legal purposes.
- Is my data sent anywhere?
- No. The calculation happens entirely in your browser.
Privacy
The birth date you enter is calculated in your browser and is never sent to a server.