Privacy

What is collected

Nothing, server-side, by this site. Every calculation on both calculators runs in your browser, in JavaScript that was delivered with the page. The sprocket sizes, tyre size, rpm figure, GPS speed and centre distance measurements you type are used to produce the numbers on screen and are not transmitted anywhere. There is no server-side processing to transmit them to.

Nothing you enter is stored between visits. Reload the page and it is gone.

Cookies

This site sets no cookies of its own. It uses no local storage, no session storage and no analytics.

Third-party advertising

This section is a placeholder and will be completed if and when advertising is introduced.

At the time of writing, no advertising is served on this site and no third-party advertising code is present in any page. The layout reserves fixed-size empty space where advertising may later appear, so that introducing it does not shift the page around, but those spaces are empty and no ad network script is loaded.

If advertising is introduced, this section will be replaced with the specific detail: which network, what it sets, what data it receives, and how to opt out where that is offered. Until then, no claim is made here about third-party data handling, because there is no third party.

Hosting

Like any website, the server that delivers these pages may keep standard access logs. That is a function of hosting, not of anything this site does, and no such log is used for analytics or profiling here.

Questions

Anything unclear on this page can be raised through the contact address.