Cookie Policy

Cookies we use

• Preference cookie: remembers your light/dark theme choice. Strictly functional.
• Analytics cookies (Google Analytics 4, Microsoft Clarity): anonymised usage measurement — pages visited, approximate geography, device type. No calculator inputs are ever sent.
• Advertising cookies (Google AdSense): used to serve, personalise and measure ads, and to limit how often you see the same ad.

Third-party cookies

Google (AdSense and Analytics) sets its own cookies under its own privacy policy. You can opt out of personalised advertising at Google’s Ads Settings page, and of analytics via the GA opt-out browser add-on.

Controlling cookies

Every modern browser lets you block or delete cookies (Settings → Privacy). Blocking analytics and ad cookies does not affect any calculator — all computation happens locally in your browser either way. Blocking the preference cookie only means the theme resets each visit.