Cookies

On an ordinary visit this site sets no advertising cookies and no cookie of its own. It does load Google Analytics 4 (measurement id G-TRFS8S3L29) to count visits. Consent for analytics storage is denied by default for every visitor, in every country, and there is no banner that can change that — so the tag never writes an analytics cookie and never stores an identifier on your device.

With analytics storage denied the measurement runs cookieless: Google receives aggregated pings carrying the page address, the referring page, an approximate location derived from your IP address, and your device and browser type. The amounts you type into the calculator are not part of that — it runs in your browser and is never sent anywhere.

One exception, named here rather than passed over in silence: on every page view the measurement code checks whether the gr_int flag is present in your browser. That is our own exclusion for internal visits, so that our test traffic does not end up in the figures. It is written only when a page is opened with ?internal=1 appended — as a cookie with a lifetime of one year, and additionally in local storage. On an ordinary visit nothing is written, and nothing on this site links to it. It holds a single flag and nothing about you, and you delete it by clearing this site’s data in your browser.

A technically necessary local storage entry is used to remember your language choice. You can clear or block anything the site or Google stores through your browser settings.

Last updated: aug 2026.

The content of this page is being extended over time.