Cookie transparency
Cookies and Similar Technologies
This page explains what cookies and similar technologies are used on the Elo Chess Rating Calculator website, why they are used, and what choices you have. We believe transparency about data practices should be as clear as our calculator explanations — no jargon, no buried clauses, just straightforward information about what happens when you visit the site. You can continue with Privacy policy for closely related guidance.
Essential Cookies
Essential cookies are required for the website to function correctly. They handle basic operations like maintaining your session state, remembering your language preference when you use the language switcher, and ensuring the site loads and renders properly across browsers and devices. These cookies do not track you across other websites and do not collect personal information. You can continue with Accessibility statement for closely related guidance.
Without essential cookies, core features like the calculator interface, navigation menu, and content display would not work reliably. These cookies are set automatically and do not require your consent because they are necessary for the service you requested.
Analytics and Measurement
If analytics tools are active on the site, they help us understand how visitors use the calculators and content pages. This includes information like which pages are visited most often, how long visitors spend on educational content, and which calculator modes are used most frequently. This data is used to improve the site and prioritize new content.
Analytics cookies are optional. Where consent is required by applicable law, you will see a consent notice that lets you accept or decline analytics cookies before they are set. You can update your preference at any time through the cookie settings panel.
What We Do Not Do
- We do not sell or share your personal data with third parties for advertising purposes.
- We do not use cookies to build advertising profiles or track you across other websites.
- We do not set cookies related to social media tracking unless you explicitly interact with a social sharing feature.
- Calculator inputs (ratings, results, K-factor selections) are processed entirely in your browser and are never stored on our servers.
Managing Your Cookie Preferences
You can manage cookies through your browser settings. Most browsers allow you to block all cookies, block only third-party cookies, or delete cookies that are already set. Be aware that blocking essential cookies may prevent the calculators and other interactive features from working correctly.
If a consent management tool is present on the site, you can use it to update your analytics preferences without needing to modify browser settings. Your preference is stored in a cookie itself (the irony is not lost on us) so it persists across visits.
Related Policies
For broader information about how we handle personal data, see the Privacy Policy. For questions about accessibility, data handling, or any other aspect of the site's operation, visit the Contact page. Our goal across all policy pages is the same: be straightforward about what we do, make it easy for you to understand, and give you clear options.