Privacy policy

Last updated 31 October 2026

Calculations run entirely in your browser. The dates you enter are not sent to us or stored anywhere.

We use Cloudflare Web Analytics, which does not use cookies or track you across sites, to count page views. Our host, Cloudflare, processes standard request data (such as IP address) to deliver and protect the site.

If we add advertising in future, this page will be updated before any advertising cookies are used.

Questions: [email protected].