Cookie Policy

Last updated: May 24, 2026

The calculators use browser local storage to remember your recent inputs on the same device. Local storage is not sent to this site as a server request.

Current services

Optional analytics is declined until you choose Allow analytics. If allowed, Google Analytics 4 measures page visits and general calculator usage and commonly sets first-party _ga and _ga_<container-id> cookies to distinguish visitors and persist sessions. No advertising cookies are currently enabled by this site.

Managing saved inputs

Use the Reset action inside a calculator to return its values to the example estimate, or clear this site's stored data through your browser settings.

Managing analytics cookies

Use Analytics settings in the site footer to choose whether optional analytics loads. Changing your choice to decline clears available Analytics cookies set for this site; you can also clear site data through browser settings. Declining analytics does not prevent you from using the material calculators.