Privacy in this version

Calculator inputs are processed in your browser. This version does not send your measurements or prices to an application server and does not require an account.

Saving on this device

Choosing “Save on device” stores that estimate in your browser’s local storage. The latest 10 estimates are retained on that browser and device, including inputs and any prices you entered. They are not synchronized to an account. Use “Clear saved estimates” to remove them. Calculating alone does not save entries.

Copying and sharing

“Copy result” writes the result and inputs to your clipboard. “Copy link” includes those inputs in the link’s fragment, after the # character. Anyone you give the link to can view the measurements and prices. The fragment is not part of the ordinary HTTP request to the host. In a local preview, the link only works on the computer running that local server.

Fonts and external links

The design serves its fonts from this website; it does not request fonts from Google or another font service. If fonts are unavailable, the browser uses a fallback font. Source links open websites with their own privacy practices. The hosting provider may keep ordinary access logs.

Advertising and analytics

No advertising or analytics scripts are installed. If these services are added, the privacy notice and consent controls must be updated for the actual services and publisher before they run. There is no contact form, email subscription or checkout in this version.

Updated September 22, 2026.