Age Calculator.

A little context.

Compares calendar dates, rather than dividing days by 365. Future birth dates are rejected. Dates are interpreted as calendar days without time zones.

Try an example

How to use this tool

1. Enter date of birth, age on date in the workspace above.
2. Select Run tool to process your input. Invalid values produce a message next to the form.
3. Copy the result or download it as a file. Reset example restores the original input.