Privacy and cookies

Nothing leaves your device. The calculators are JavaScript running in your browser, there is no server-side processing, and no measurement or price you enter is transmitted, logged or stored. Reloading the page clears it.

The site is served as static files by GitHub Pages, which records standard web server access data such as IP address and user agent. We do not have access to those logs beyond aggregate traffic figures.

The site is verified in Google Search Console, which reports which search queries led here in aggregate. It identifies no individual.

There is no advertising on this site today. Nothing is served into the ad slots in the layout, and no advertising cookie is set. If that ever changes, this section will say what is served and what it stores before the first ad goes live, not after.