Age Calculator

Calculate exact age between a birth date and a selected date, including days until the next birthday.

Date of birth:

Calculate as of:

How to use

Enter your information, use the controls, and review the result. Core processing happens in your browser.

Results are provided for general convenience. Verify important results independently when accuracy is critical.

Is this tool free?

Yes. The Version 1 tools are designed for free browser-based use.

Is my data uploaded?

This tool does not intentionally upload its inputs to a RheyKit backend.