Updated 7 November 2026.
Calculator data and saved plans
Calculations run in your browser. We do not upload your dimensions, material prices, cut lists or saved plans to an application server. Export files are generated locally. Saving a plan is optional and uses localStorage on your device. Clearing site storage deletes it. No account or database is required.
Google analytics by site default
Google Tag Manager container GTM-K48XFNX2 loads automatically unless you opt out or your browser sends Global Privacy Control or Do Not Track. This is a site default, not a claim that you consented. Analytics storage is enabled by that default; advertising storage, ad user data and ad personalization are instructed to remain denied. Google may receive page URLs, browser/device information and IP-derived information and may store analytics cookies.
The public container identifies GA destination G-TS00MSREDQ and exposes enhanced-measurement form interaction and automatic user-provided-data detection settings (email, phone and address). Therefore we cannot honestly call the container page-view-only or independently verified minimal. We provide no contact/identity fields and never intentionally add calculator values or personal data to our own analytics events. Container behaviour is controlled by its owner and can change. No dashboard receipt or account-level privacy configuration is verified.
Turn analytics off
Use Analytics preferences in the footer, then Turn analytics off. The choice is saved in this browser and the page reloads to stop loading Google scripts. Previously sent or queued requests cannot be recalled. Existing Google cookies may remain; remove them through your browser settings. A prior saved decline and GPC/DNT are honoured before any Google script loads. Turning analytics back on cannot override a browser privacy signal.
Hosting and your choices
The site is delivered through Cloudflare and an nginx origin. Hosting and network providers may process request metadata needed for delivery and security. We do not promise that network metadata is never processed. No calculator-value analytics events, advertising integration or user account is implemented by this site. You can use the calculators with analytics disabled.
See calculation limits or return to the planner.