Cookies

Last updated: 4 November 2026.

How the calculator works

The calculator itself does not set advertising cookies, ask you to sign in, or use analytics scripts. Your project selections are calculated in memory in the browser, rather than stored in a marketing profile.

Hosting technology

Our host Vercel may use strictly necessary security or infrastructure technologies when delivering the website. We have not enabled a third-party advertising or behavioural tracking service in this version.

Future changes

If we introduce non-essential analytics or marketing cookies, we will update this page and obtain consent where required. You can manage browser cookies through your browser settings.