Privacy Policy

Last updated: July 11, 2026

What we collect

Nothing you type. All calculator inputs are processed entirely in your browser by client-side JavaScript. They are not stored, logged, or transmitted to any server.

Hosting logs

The site is served by a hosting provider (Cloudflare Pages), which processes standard technical data (IP address, user agent, requested URL) to deliver pages and prevent abuse, per its own privacy policy. WattCosts does not use analytics scripts, tracking pixels, or third-party cookies.

Cookies

This site sets no cookies.

Affiliate links

Some pages contain clearly labeled affiliate links (see the affiliate disclosure). WattCosts itself still sets no cookies and runs no trackers; if you click an affiliate link, you leave this site and the merchant's own privacy policy and cookies apply from that point.

Future changes

If advertising is ever added, this policy will be updated first, the change will be dated, and any third parties involved will be named here.