Cookie policy

Cookies we set today

None for tracking, advertising or analytics. The site is static HTML with calculators that run entirely in your browser; your inputs are never sent to a server and are not written to cookies or local storage.

One item of first-party storage is used: a “consent choice” entry in your browser’s local storage that remembers whether you accepted or rejected optional categories in the cookie banner, so the banner does not reappear on every page. It contains only your yes/no choices and the date you made them. Storage that exists solely to record a consent decision is treated as strictly necessary under the ePrivacy rules and does not itself require consent.

Categories in the preferences panel

Necessary: the consent record described above and the anti-spam tokens in the contact form. These cannot be switched off because the site cannot function without them.

Analytics: not currently used. If aggregate usage measurement is ever added, it will be listed here with the provider, the purpose and the retention period, and it will stay off until you allow it.

Marketing: not currently used. The site carries no advertising and no social-media pixels.

Changing your choice

Use the “Cookie preferences” control in the footer of any page to reopen the panel and change or withdraw your choice. You can also clear the entry through your browser’s site-data settings, after which the banner will appear again.

Server access logs kept by the hosting provider record the requested page, the time and a connection address for security and capacity purposes; they are not cookies and are covered in the privacy policy.