Privacy & Local Storage

Simple planning, without accounts.

What happens to your measurements?

The calculator works in your browser. When available, browser local storage saves each page's latest project on your device, so you can return to it. You can reset the project or clear your browser's stored site data to erase it.

Sharing a project

The Share plan button creates a link that contains your project measurements encoded in the URL. Anyone you send that link to can read the values it contains. Do not enter sensitive or private information into project names.

Analytics and advertising

This initial version does not include third-party analytics, ad scripts or tracking cookies. Hosting and network providers may still process normal technical connection data such as IP addresses and requests. If advertising or analytics are introduced later, this notice must be updated before those services are enabled.

External resources

Links to other sites are provided for reference. Their own privacy rules apply once you visit them. Last reviewed November 2, 2026.