Privacy

Short version: nothing about your use of the calculators is stored, transmitted, or seen by anyone but you.

What stays in your browser

Every number you enter into a calculator, every slider you move, and every answer the tool gives you stays inside your browser tab. The math runs in JavaScript on your own device. Nothing is sent to any server. Closing the tab erases everything — there is no save, no account, no profile, no history.

What this site collects

Standard server logs from our hosting provider (Cloudflare) record general traffic information — which pages were visited, roughly when, from roughly where — the way every website on the internet does. This information is not tied to you personally and is not combined with anything you enter into the tools.

If you visit through a search engine or a link, the referring website may be logged. We do not run analytics scripts on the site itself. There is no Google Analytics, no Facebook pixel, no behavioural tracking.

This site is supported by Google AdSense. When AdSense is active, it serves ads in clearly-marked slots at the top and bottom of pages — never inside a calculator's result. Google may use cookies to serve those ads, including ads relevant to your prior browsing. You can opt out of personalized ads at adssettings.google.com.

Cookies

The site itself sets no cookies. Cloudflare may set a cookie for security purposes (to identify and block automated abuse). When AdSense is active, Google may set cookies for ad delivery as described above.

Children

The tools on this site are not designed for or directed at children, and are not appropriate for use by anyone under 18.

Operator

This site is operated by Vitalitas LLC.