Your room measurements stay in your browser.

Effective July 19, 2026

Bed Size Chart has no account or login. Mattress comparisons and room-fit calculations happen on your own device, in your browser.

What the tool stores

The tool may save your most recent sizing standard, bed pair, display choices and last valid room settings in your browser's local storage. This lets it restore your comparison when you return. That state remains on your device and can be removed with Start over or by clearing this site's browser data.

Share links and saved images

When you choose Share, the comparison settings are written into the link so another browser can reproduce the result. Do not add information to a shared link that you do not want its recipient to see. Copied summaries and saved images are generated on your device; the tool does not upload them.

What we do not do

No advertising, no analytics, no third-party trackers, no cross-site profiling and no selling of data. The tool does not set marketing cookies or request access to your files, camera, contacts or location.

Hosting

The site is served from Cloudflare's network. As with any website, Cloudflare processes basic connection information such as your IP address to deliver and secure the request. Bed Size Chart adds no analytics or tracking on top of that hosting.

Questions

Because the tool does not receive your comparison or room state, there is normally nothing for us to retrieve or delete. Clearing this site's browser data removes its local copy. See the terms of use for the tool's measurement limits.