Privacy Policy

Last updated: 29 October 2026

This site is a static reference site with no accounts, sign-ups or forms, so it collects no personal information from you directly, and it does not set cookies.

What we collect

No personal information — the site has no accounts, no sign-up, no forms and no comment system. We do not ask for, or store, any personal data that identifies you.
No cookies — the site does not set cookies or use local storage to track you.
Calculators run locally — values you type into the calculators are processed entirely in your browser and are never sent to a server. Links you copy from a calculator contain only the numbers you entered.

Analytics

To understand how the site is used and where to improve it, this site uses Cloudflare Web Analytics to count page views in aggregate. It does not use cookies or local storage and does not fingerprint visitors — see Cloudflare Web Analytics. No advertising or cross-site tracking is configured.

Hosting

The site is hosted on Cloudflare Pages, and its source files are stored on GitHub. Like most web hosts, Cloudflare may collect standard technical information in its server logs (such as IP addresses) when pages are served. This logging is controlled by Cloudflare, not by this site — see Cloudflare's Privacy Policy for details.

External links

This site links to external websites operated by councils, utilities, government agencies and standards bodies. Once you leave this site, the privacy policy of the site you visit applies. We are not responsible for the content or privacy practices of external sites.

Advertising

The site currently shows no advertising. If advertising is introduced in the future, this policy will be updated beforehand to describe any data collected by the advertising provider, and the "Last updated" date above will change.

Questions

If you have a question about this policy, see the Contact page.