Your calculator inputs never leave your browser
Every calculator on this site runs entirely in your browser using inline JavaScript. The numbers you type — costs, mileage, anything else — are not sent to any server, not stored, and not shared. Close the tab and they are gone.
What we do collect: anonymous usage statistics
We use Google Analytics 4 to understand which pages are visited and roughly how the site is used. Specifically:
- Google Analytics sets cookies and collects standard usage data (pages viewed, approximate location derived by Google, device and browser type).
- We have IP anonymization enabled in our configuration.
- We do not send your calculator inputs or any values you type to Google Analytics or anywhere else. Our analytics events contain page and result-type identifiers only.
- We do not run advertising personalization signals for Google Analytics.
You can opt out of Google Analytics across all websites with the Google Analytics opt-out browser add-on, or by using your browser's tracking-prevention features.
Hosting
This site is hosted on GitHub Pages. GitHub may collect standard server logs (such as IP addresses) as part of operating the service; see GitHub's privacy statement for details. We do not have access to individual visitor logs.
No accounts, no forms
This site has no user accounts, no sign-up, no newsletters and no contact forms. We never ask for your name, email address or payment details.
Affiliate links
Some pages may contain affiliate links, clearly disclosed where they appear. If you click one, the destination site and its network may set their own cookies to attribute the visit. See our affiliate disclosure for how these relationships work.
Your privacy choices
Depending on where you live, you may have specific privacy rights under the laws of your state or country. Because this site collects no personal information beyond the anonymous analytics described above, there is generally nothing for us to delete or sell — we do not sell personal information. If you have a question about this policy, you can open an issue on GitHub.