How this calculation works
Calculate exact age in years, months, and days on a chosen date. The result is calculated locally in your browser from the visible inputs, and the method below remains available for checking.
Worked example
A birth date of 1 January 1995 compared with today returns exact years, months and days.
Assumptions and limits
- Inputs use the units shown beside each field.
- Intermediate values retain precision; displayed values are rounded for readability.
Questions people ask
How does the Age Calculator work?
It applies this displayed method: Calendar years and months are added without crossing the comparison date; remaining whole calendar days form the final component. Values stay in your browser and are not submitted to a server.
What should I check before using the Age result?
Inputs use the units shown beside each field. Intermediate values retain precision; displayed values are rounded for readability. Calendar and time-zone results use browser date and IANA timezone data; legal deadlines may follow jurisdiction-specific rules.
Does this Age calculator save my information?
No. Calculation inputs are processed on this device. Sharing creates a URL only when you choose the share action.