Age Calculator — Free Online Tool

Calculate elapsed age in years, months, and days from a birth date to a selected reference date.

This private tool runs locally in your browser. Your text is never uploaded or sent to a server.

How to use Age Calculator

Enter the date of birth
Choose the reference date
Read the exact age breakdown

Example

The result separates completed years from the remaining months and days.

Useful tips

Use the correct local calendar date
Legal age rules may use jurisdiction-specific definitions

JavaScript enables the interactive tool above.

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