Plain language, no legalese padding
Privacy Policy
This page explains, in plain terms, what happens to the trip and mileage numbers you type into this site, and what this site collects (or doesn't collect) about your visit. Short version: every calculation runs entirely in your browser, nothing you type is sent to a server, and there is no account, login or tracking cookie on this site.
What happens to the numbers you enter
The gas cost calculator and the MPG calculator both do their math entirely inside your browser, using JavaScript. Your trip distance, fuel efficiency, gas price and any other value you type is never sent to a server, never logged, and never stored in any database on this site. There is no form anywhere on this site that transmits your calculator inputs anywhere.
This is a direct consequence of how the site is built: it is a static site with no backend that receives, processes or stores what you type. There is no infrastructure on this site's side capable of receiving those numbers, even if someone wanted to.
Theme preference (light or dark mode)
The only thing this site saves on your device is your light/dark theme preference and your last entered calculator values, stored in your browser's localStorage. This does not identify you, is never sent to any server, and only exists so the page can remember your preferences on your next visit. You can clear it at any time by clearing this site's data in your browser.
The feedback button
Below each calculator there is an optional thumbs-up / thumbs-down feedback button. Clicking it sends an anonymous signal (just the vote count, no information that identifies you, no stored IP address, no tracking cookie) to this site's backend, purely so the count can be tallied. A local marker in your browser prevents you from being asked to vote again repeatedly, but that marker does not identify you personally, it only stops a second vote from the same browser.
Visit metrics (Cloudflare Web Analytics)
This site uses Cloudflare Web Analytics to understand, in aggregate, how many people visit each page and roughly where they came from (for example, a Google search versus a direct link). This tool was chosen specifically because it does not use cookies and does not build an individual profile of each visitor: metrics are collected in aggregate at Cloudflare's network edge, without this site needing to load a traditional tracking script in your browser. It is not possible to identify a specific visitor from these metrics.
Cookies
This site does not use advertising tracking cookies or third-party profiling cookies. The only local storage used is the localStorage mentioned above, for theme preference and calculator values, which is technically not a cookie and is not automatically sent to any server with every request, unlike a traditional cookie.
Hosting and infrastructure
This site is hosted on Cloudflare's network, which processes the technical requests needed to deliver the page to your browser (source IP address, browser type, request time), the same way any hosting provider does. That technical infrastructure data falls under Cloudflare's own privacy policy as the network operator, and is not accessed, exported or combined by this site to identify visitors individually. No hosting information is used for any purpose beyond delivering the pages and assets (CSS, JavaScript, images) that make up the calculators.
Third-party links
A few pages on this site link out to third-party resources, for example the EPA's fueleconomy.gov on the average gas mileage by vehicle type page. Once you click through to a site not run by us, that site's own privacy policy applies, not this one. We do not control, and are not responsible for, what any linked third-party site does with your visit.
What this site does not do
To be explicit rather than vague: there is no user account system, no login, no email newsletter signup, no advertising network, no remarketing pixel, and no sale or sharing of visitor data with data brokers. The two calculators and the reference page are the entire functionality of this site, and none of them require, request, or benefit from collecting personal information, so none is collected.
Changes to this policy
If the way this site collects or handles data changes in the future (for example, if a new feature required saving something on a server), this page will be updated to reflect that change before it takes effect. There is no fixed review schedule, but the commitment is to keep this text matching what the tool actually does, not a generic description copied from elsewhere.