This policy covers e6bcalculator.com. It was last updated on September 26, 2026.
Your calculations
Every calculator, the weight-and-balance worksheet, the nav log, the virtual E6B and the METAR and TAF decoders run in your browser. The numbers you type, the reports you paste and the aircraft data you enter are not sent to this site.
Stored in your browser
To save you typing, the site keeps these in your browser's local storage:
- your theme (Instrument or Paper) and temperature and pressure units;
- the last inputs of each calculator, so they are there next time (the Reset example button clears them);
- aircraft you choose to save in the weight-and-balance worksheet;
- your current nav log (Start a new log clears it).
This data stays on your device and is not synced or uploaded. Clearing this site's data in your browser settings removes all of it. If storage is blocked, everything still works; it is just not remembered.
Live weather
When you enter an airport identifier in the METAR or TAF decoder, your browser sends that identifier to this site, which requests the current report from the Aviation Weather Center's public data service (aviationweather.gov) and returns it. The request carries only the station identifiers. Answers are cached for five minutes and are not linked to you.
What the site records
We do not use cookies, advertising identifiers or third-party analytics.
When a page is requested, our server records a count with: the page address, the domain of the website that linked to it (if your browser shares one), the country (worked out by our hosting provider from your connection; the IP address itself is not stored in these counts), whether the device is a phone, tablet or computer, and whether the request looks automated.
The page also sends a few anonymous feature counts: which calculator was used, that a weather report was decoded or a fetch failed, that a load sheet or nav log was printed, and that an aircraft was saved. These counts never include the numbers you entered, the reports you decoded or any aircraft details.
We also collect anonymous reliability counts: whether the page script started, broad error categories, and measurements of loading speed, responsiveness and layout movement. They contain no error messages, typed text or visitor identifiers.
These counts are kept in Cloudflare Workers Analytics Engine for about three months and used to see which tools are used and to find problems.
Hosting
The site runs on Cloudflare, which processes every request (including your IP address) to deliver the site and protect it from abuse, as described in Cloudflare's privacy policy at cloudflare.com/privacypolicy.
Email, children, changes
If you email us, your address and message are used only to reply. The site is not directed at children under 13. If what the site records changes, this page will be updated before that change goes live.
Contact: hello@e6bcalculator.com.