What we collect
This site uses Google Analytics 4 to count visits and see which pages are used. Google Analytics sets cookies and collects information such as pages viewed, approximate location, device and browser type. We use it in aggregate only and do not try to identify individual visitors. Google's use of this data is described in Google's own privacy policy.
What we do not collect
- The calculator runs entirely in your browser. Your inputs are not sent to us.
- There are no forms, accounts, newsletters or contact capture on this site.
- We do not sell or share data with agencies or anyone else.
Stored in your browser
If you use the light or dark mode switch, your choice is kept in your browser's local storage so the site remembers it. Your estimate is stored only in the page address, which you control.
Who we are
This site is operated by Digital Signet. For privacy questions, email hello@digitalsignet.com.
Last updated 2 October 2026.