Privacy policy

Effective 2026-09-23.

Quick answer: this site collects no personal data. There are no accounts, no analytics, no tracking cookies, and no advertising scripts. Calculator inputs are processed entirely in your browser and never sent anywhere.

What we collect

Nothing. We do not operate user accounts, contact forms that store data, analytics, or third-party trackers.

Cookies

We set no cookies.

Contact

If you email us (see our contact page), your message is used only to respond to you. We do not add addresses to any list.

Changes

If we ever add analytics or advertising, this policy will be updated first, with the effective date changed and the change described here.