How it works
The page compares calendar dates and accounts for month/day boundaries.
Input stays in the browser. The static page can be deployed independently for its own host or later custom domain.
Calculate age precisely.
Calculate age from a birth date to today or a custom reference date, including next birthday.
Preview placement
336 x 280
Preview placement
728 x 90
AgeReady
Choose a birth date.
Preview placements
Visible placeholders stay on the page until real ad units, account approval, and consent management are connected.
- Top rectangle for above-the-fold inventory.
- Leaderboard near the tool interaction.
- Side rail and bottom sticky placements for larger screens.
Frequently asked questions
Is this tool free?
Yes. This static browser tool is designed to be free to use.
Does this tool upload my input?
No. The tool logic runs locally in your browser unless a future version clearly states otherwise.
Can I use it on mobile?
Yes. The layout is responsive and built for mobile, tablet, and desktop screens.