Privacy Policy

Effective September 20, 2026.

Calculator inputs

Calculations run in your browser. We do not provide user accounts or save calculator histories to a database. Copy Link and the link options in Share Result encode your inputs in a URL. Anyone receiving that URL can read those values. URLs may also appear in browser history and infrastructure access logs. Do not put personal or sensitive information in share links.

Hosting

Cloudflare delivers the website and may process request metadata such as IP addresses, requested URLs, browser information, and security events to operate and protect the service. See Cloudflare’s privacy policy.

Ads, cookies, and analytics

This version does not load advertising or analytics scripts or set advertising cookies. No advertising consent platform is installed.

Clipboard and sharing

Clipboard and native sharing are used only when you select the corresponding button. Selecting a social platform opens its sharing page with your result link and, where supported, a short result summary. The link contains your calculator inputs. The chosen platform processes this information under its own privacy policy; you review and publish there. Opening the share menu itself does not contact social platforms. Embedded calculators use the same local calculation approach and do not load third-party scripts.

Result images are generated on your device and are not uploaded to our servers. You choose whether to include calculation inputs in the images; optional assignment and course names are always excluded. Share images sends only the PNG files to your selected app. Link-sharing buttons remain separate and include the calculator inputs even when an image hides them.

Contact and updates

See our contact page for the current feedback channel. This policy will be updated if the service’s data practices change.