Privacy

Calculator inputs

The website code does not send the numbers you enter to a calculation server or save them in cookies, local storage, or an account. Reset restores example inputs. Reloading normally restores the page defaults; your browser may separately restore form fields.

Printing or saving a PDF includes your current inputs. Choose where to store or share that file carefully.

Hosting and measurement

Cloudflare serves the site and may process request information such as IP address, URL, browser details, and security events to deliver and protect it. Hosting logs and retention depend on the provider and account configuration.

The calculator code emits interaction events such as opening assumptions, viewing a result, or following a guide link. It can forward them to Plausible or Google Analytics if those services are configured. Those event properties do not include calculator field values. This description of the website code does not establish which analytics or security features are currently enabled in the hosting account.

Email and outside websites

Feedback links open your email app. Anything you choose to send, including your email address and message, passes through email providers. Avoid sending account passwords or sensitive personal information. External sources and websites have their own privacy practices.

Questions and corrections

Contact us with privacy questions or a correction request. Please identify the page and concern without including sensitive information.

Published October 3, 2026. This notice describes the current repository implementation; provider account settings require separate verification.