This page explains what cookies 100 Calculator uses, why we use them, and exactly how you can control them — no matter which browser or device you're on.
Cookies are small text files placed on your device when you visit a website. They help the site remember information about your visit — like your preferences or how you navigated between Tools — which can make your next visit easier and the Site more useful.
100 Calculator uses four categories of cookies, detailed in the sections below: essential, analytics, functional, and advertising. Only essential cookies are required for the Site to function — the rest support analytics, personalization, and the ads that keep our Tools free.
These cookies are strictly necessary for core functionality — such as loading the Site's layout, remembering your cookie consent choice, and keeping the search and mobile-navigation menus working correctly. The Site cannot operate properly without them, and they cannot be switched off in our systems.
Analytics cookies (such as those from Google Analytics) help us understand, in aggregate, which categories — say, Crypto Tools versus Education Tools — are most visited, how long sessions typically last, and where visitors encounter errors. This data is reported anonymously and in aggregate.
Functional cookies remember choices you make — such as a preferred unit system (metric vs. imperial) on a health calculator, or a previously selected tool category — so you don't have to reset them on every visit.
Advertising cookies are set by our third-party ad partners to deliver more relevant ads and to measure ad campaign performance. These cookies may track your activity across this and other websites. They support the advertising revenue that keeps every 100 Calculator tool free.
You can accept or decline non-essential cookies at any time through our cookie consent banner, or by changing your browser settings. Declining analytics or advertising cookies will not prevent you from using any calculator — it only limits the data those categories collect.
Most browsers let you view, delete, or block cookies through their settings menu:
Blocking all cookies may affect how parts of the Site display or function.
Some cookies on the Site are set by third parties — such as analytics providers, advertising networks, and affiliate tracking partners in our Finance, Trading and Crypto categories. Each third party manages its own cookies under its own privacy and cookie policy, which we encourage you to review.
We may update this Cookie Policy as our use of cookies changes or as regulations evolve. The "Last Updated" date at the top of this page reflects the latest revision. Please check back periodically.
Questions about our use of cookies can be sent to: