Privacy Policy

§ What this site collects

• No accounts, no forms, no cookies set by us. This is a static website. There is nothing to sign up for and nothing stored in your browser by our code.
• Calculators run locally. The interactive calculators on this site execute entirely in your browser. Numbers you type are never transmitted, logged, or stored by us.
• Server logs. Like effectively all websites, the server that hosts these pages may record standard technical logs (IP address, user agent, pages requested) for security and capacity purposes. We don't use these to identify or profile visitors.

§ Email

If you email us, we keep the correspondence so we can reply and remember context. We don't add you to any list, and we don't share or sell addresses. Ask us to delete a thread and we will.

§ Third parties

Pages on this site link to external websites (for example, government resources). Their privacy practices are their own; a link is not an endorsement of them. We embed no third-party analytics, fonts, ad networks, or social widgets — every asset on this site is served from this site.

§ Changes

If our practices change (for example, if we ever add privacy-respecting analytics), this page will change first, with a dated note.

Effective: 2026-08-19 · Contact: via the contact page