Privacy Policy

There's no login, no account creation, and no way to submit personal information to us through this site — there's simply nowhere on the site that asks for it. Every tool (calculators, converters, the printable sizer) works by running calculations directly in your browser using a fixed, published conversion chart — no data ever needs to leave your device for the site to function.

We believe in complete transparency about how data and cookies are handled. Below is a complete breakdown of every cookie and local storage item used on this site:

You can accept or reject optional analytics cookies using our cookie banner, opt out of Google Analytics via the Google Analytics Opt-out Browser Add-on, or clear cookies anytime in your browser settings. Doing so will not affect any calculator functionality.

The "Save sizes for people you shop for" tool (available on the homepage and the ring size calculator) stores whatever you save using your browser's built-in local storage — a feature every browser provides for websites to remember things, similar to how a site might remember your last search. That data stays only in the browser you saved it in; it is never transmitted to us or to anyone else, we have no way to see or access it, and it is permanently deleted the moment you clear your browser's site data or switch to a different browser or device.

This site is hosted on Cloudflare Pages. Like any website host, Cloudflare's infrastructure necessarily processes standard technical request information (such as IP address and browser user-agent) to deliver pages to your browser and to protect the site from abuse — this happens automatically at the hosting/network level for any website on the internet, the same way a postal service needs a delivery address to deliver mail. We do not separately collect, access, or make use of this information ourselves.

Our how-to-measure guide embeds one third-party tutorial video, served directly from YouTube (youtube-nocookie.com, YouTube's privacy-enhanced embed mode, which avoids setting tracking cookies unless you press play). Loading that page still causes your browser to request the video player directly from YouTube/Google, who can see that the page was visited and may process that request under their own privacy policy — we don't control that, and it isn't covered by this policy. No other page on this site embeds any third-party content.

A few pages also link out (as plain clickable links, not embeds) to third-party websites — for example, a brand or country's own sizing chart we've referenced, always clearly marked and opened in a new tab. Once you click through, you're on that other site, subject to its own privacy practices, which we don't control and this policy doesn't cover.

This site may display advertisements served by Google AdSense and/or other third-party advertising vendors. These vendors may use cookies (including Google's advertising cookies) to serve ads based on your prior visits to this and other websites. You can opt out of personalized advertising by visiting Google's Ad Settings or the industry-wide opt-out at aboutads.info/choices. Advertising, if shown, never determines or influences any calculator result on this site.

Email us at hello@ringsizeconvert.com — see our Contact page for more.