Privacy Policy

The numbers you enter. All calculations run in your browser. The numbers you type are not sent to or stored on our servers. Some calculators may keep a calculation history in your browser’s local storage only, which you can clear at any time.

Live air quality. The live air quality box on the haze pages shows readings for the city you pick. Our server fetches them from Open-Meteo.com about once an hour and shares them with all visitors, so your browser talks to us, not to Open-Meteo. If our server cannot supply them, your browser may ask Open-Meteo directly, and Open-Meteo then sees your IP address like any website you visit. We do not send what you type into the calculators.

Server logs. Our hosting provider (Vercel) records basic technical information such as IP address and browser type for security and reliability.

Advertising and cookies. This site may show Google AdSense ads. Google and its partners may use cookies to show ads based on your visits to this and other websites. Learn more and manage your choices at how Google uses data from partner sites and Google Ad Settings.

Personal Data Protection Act 2010. We do not collect personal data through the calculators. If you email us, we use that information only to reply to you.