Your calculations
All calculator inputs and results are processed in your browser. They are not sent to a server as part of the calculation.
Saved projects
When you save a project, it is written to your browser's local storage on this device only. Clearing your browser data removes it. There is no account system and no server-side copy.
Shared links
Calculator inputs may appear in the page URL so you can bookmark or share an estimate. Anyone with that link can see those values, so treat shared links accordingly.
Cookies and advertising
This site does not use advertising, affiliate links, or cookie-based advertising profiles.