Updated September 21, 2026.
The calculator runs entirely in your browser. This site does not send your calculator inputs to Google Analytics or our server. There is no account registration or advertising placement.
We use Google Analytics 4 (measurement ID G-TXVYGYL1XS) to understand visits and which pages are useful. Google receives visit information such as page views, browser and device details, referral information and network information; it may derive approximate location. GA4 uses cookies such as _ga and _ga_TXVYGYL1XS to distinguish browsers and sessions. Enhanced measurement may record scrolling, outbound clicks and downloads depending on the data-stream settings. These counts are not a complete census of visitors.
The site tag disables Google signals and advertising personalization signals. We do not deliberately send names, email addresses or calculator values as analytics parameters. Do not place sensitive information in URLs. Google processes analytics data under its own policies; see Google's privacy policy and how Google uses information from sites that use its services.
To opt out of Google Analytics in a supported browser, use the Google Analytics opt-out browser add-on. Browser privacy tools can also block Google Analytics requests. Blocking cookies alone may not block every measurement request.
This website is hosted on Cloudflare Pages. Visiting the site sends network requests to Cloudflare, which may process request metadata such as IP addresses for delivery and security. See Cloudflare’s privacy policy. Calculator inputs are processed locally in your browser.
Following an official-provider link takes you to a separate website governed by that provider's policies. No purchasing or billing data is collected here.
This is an early public release and should not be treated as a published service. See About for what the project does and does not claim. If you email the public address on our contact page, we receive your email address and message to handle your inquiry. Do not include sensitive information.