Privacy Policy
This page covers two separate things: the calculators, which run entirely in your browser and store nothing, and the site itself, which loads Google Analytics on every page. The sections below cover each.
What the calculators store
Nothing. Every calculation runs client-side in your browser; the numbers typed into a calculator never reach a server, because no server-side calculation step exists to send them to. The calculators hold their values in browser memory for the length of the visit and discard them when the tab closes. No calculator writes to cookies, to local storage or to session storage.
Analytics
This site uses Google Analytics to see which pages get read and how visitors arrive here. Google Analytics sets cookies in your browser and sends Google your IP address, approximate location, device and browser type, and the pages you visit. Google's own privacy policy, not this one, governs what Google does with that data afterward.
Blocking cookies, enabling a browser's tracking protection, or running an ad blocker stops this collection. The site works identically either way, since Analytics has no effect on any calculator.
Accounts and personal data
The site offers no account, no login and no newsletter, so it holds no name, no email address and no payment detail belonging to a reader. An email sent to the contact address stays email, kept only for as long as answering it takes.
Hosting and logs
The site is served as static files from a content delivery network. A CDN records standard request information such as IP address, user agent and requested URL for delivery and abuse prevention. That processing belongs to the host, and is not a data collection this site performs.
Changes to this policy get published on this page.