Can we count your visit? If you accept, Google Analytics sets two cookies to see which pages and sizer steps get used — never your measurements, and with Google’s ad features off. Details

Change it any time under “Cookie settings” at the foot of the page.

Ring Size Tool

Privacy Policy

Last updated: 6 October 2026

The short version

There is no account, no sign-up and no advertising on this site today. The ring sizer itself runs entirely in your browser: the measurements you type, and the size it works out, are never sent anywhere — there is no server here to send them to.

What we do collect is ordinary web analytics, and the main part of it only if you say yes. Google Analytics 4 records that a page was visited and which steps of the ring sizer were used, and sets two cookies to do it — but only after you accept it in the cookie banner. If you reject it, or never answer, it does not load at all. Cloudflare, which hosts the site, also counts page views and how fast pages load, without cookies, and that part does not depend on the banner. That is the whole of it, and both are described in full below.

What is stored on your device

Up to five small values, all in your browser’s local storage, none of which leaves it:

  • Your theme preference — light, dark or system, so the page does not flash the wrong colour on your next visit.
  • Your screen calibration (rst.pxPerMm) — a single number, how many pixels your display puts in a millimetre, so you do not have to hold a bank card against the screen every time.
  • Your browser’s zoom level when you calibrated (rst.dprAtCalibration) — so the sizer can warn you if the zoom has changed since, which would make the calibration wrong.
  • What you calibrated against (rst.calObject) — a card, a US quarter or a 1 euro coin, so the same one is offered next time. Stored only if you pick one.
  • Your answer to the cookie banner (rst.consent) — accepted or rejected, and when, so you are not asked on every page. It is kept for 182 days, about six months; after that the banner asks again.

Clearing this site’s data in your browser removes all of them.

Analytics

This site runs two measurement scripts, and no others: Google Analytics 4 (measurement ID G-JR8CR281H4), which runs only if you accept it and is described first, and Cloudflare Web Analytics, described after it.

It records the ordinary things an analytics tool records:

  • which page you opened, when, and which page or search sent you here;
  • an approximate location — country, region, roughly the city — worked out from your IP address;
  • your device type, browser, operating system and screen size;
  • engagement on the page: how far you scrolled, outbound link clicks and file downloads. Google calls this “enhanced measurement” and it is switched on.
  • which steps of the ring sizer you took: that you saved a calibration and against what (a card, a US quarter or a 1 euro coin); which starting point you chose (a ring, your finger, or a measurement you already had); that you first changed the measurement, and whether the screen was calibrated at that moment; which measure and unit you switched to; and, on the printable sheet, that the print dialog opened and whether from the button or the browser’s own Print. Each one says a step happened, not what it produced.

It does not receive anything you type into the ring sizer. The measurement, the calibration and the resulting size stay in your browser; no event carries them.

Two cookies make this work, both first-party, both set only after you accept, and both expiring after 400 days:

  • _ga — distinguishes one browser from another.
  • _ga_JR8CR281H4 — holds the session state for this property.

Nothing from Google loads until you accept. Before you answer, and after you reject, the Google Analytics script is not fetched at all and neither cookie is set; any left over from an earlier visit are deleted. When you accept, the script loads with Google’s advertising features switched off — Google signals and ad personalisation — and with permission for analytics storage only, never advertising storage.

To change your mind, use “Cookie settings” at the foot of any page. Rejecting there deletes both cookies and reloads the page so the script stops. Your answer is asked for again after about six months. Google’s opt-out add-on and content blockers also still work, and the ring sizer works exactly the same whichever you choose, because it never needed the network.

Cloudflare Web Analytics

Cloudflare, which hosts the site, adds its own analytics script to every page. Read from the script itself, it reports the address of the page you opened, the page that sent you here, and how long the page took to load and respond. It sets no cookies and stores nothing on your device, and Cloudflare states that it does not fingerprint visitors by IP address or browser. It does not see anything you type into the ring sizer either. We see only totals — page views, referrers, countries, device types and load times — never an individual visit. Content blockers stop it too. It is not controlled by the cookie banner: Cloudflare adds it at its network edge, outside this site’s own code, so it runs whatever you choose there.

Advertising

None. There are no ads and no advertising cookies today. This site is intended to carry advertising eventually; when it does, this section will name the network, and visitors in the EEA and UK will be asked for consent before any advertising cookie is set — not afterwards.

Hosting

The site is served by Cloudflare Pages. Like any web host, Cloudflare processes the technical details of each request — IP address, browser, and which page was asked for — to deliver the page and protect against attacks. That happens at the network level, we do not read it, and it is the only third party involved in serving this site. Their handling is covered by Cloudflare’s privacy policy.

Your choices

Clear this site’s data in your browser to remove the theme and calibration values, and the two Google Analytics cookies with them. Cloudflare’s analytics stores nothing to clear. To stay out of Google Analytics, reject it in the cookie banner or under “Cookie settings”.

What we hold is the aggregate Google Analytics reports — visit counts by page, country, device and referrer. There is no account, no email and no name attached to any of it, so we cannot look you up, and there is nothing personal for us to hand over or correct. If you want a visit deleted from those reports, write to us with the approximate date and country and we will submit a deletion request to Google; be aware that aggregate counts cannot be unpicked per visitor, which is the honest answer rather than a promise we cannot keep.

Contact

Questions about any of this: contact@ringsizetool.com