Cookies are small text files stored by a browser or device. Similar technologies can include local storage, pixels, tags, scripts, and identifiers that help a website remember settings, measure activity, or support advertising.
- Strictly necessary
- Supports core site functions such as security, consent choices, form protection, admin sessions, and page delivery.
- Preferences and functionality
- Remembers choices such as theme, calculator settings, recently used options, or interface preferences when those features are enabled.
- Analytics and performance
- Helps understand aggregate page usage, errors, performance, popular tools, and navigation paths so the site can be improved.
- Advertising
- May help advertising partners measure ads, reduce repeated ads, prevent abuse, and show ads that are more relevant when advertising is enabled.
Some storage is necessary for the website to work correctly and may not require consent. Non-essential analytics, advertising, or similar technologies may require clear consent depending on the user's location and applicable rules.
A cookie is treated as essential only when it is needed to provide a requested service or keep the site secure, not merely because it is useful to the website owner.
Analytics may help measure visits, errors, device types, and page performance. Advertising technologies, if enabled, may be controlled by advertising partners and their own privacy and cookie rules.
Calculator settings, theme choices, dismissed notices, saved preferences, or recent activity may use browser storage. Clearing browser data can remove those preferences.
- Use browser settings to block, delete, or limit cookies and local storage.
- Use any consent controls provided on the website to change non-essential cookie choices.
- Use ad and privacy settings from your browser, device, or advertising provider to limit personalized advertising.
- Be aware that disabling storage may make preferences, forms, saved options, or admin sessions work less smoothly.
Cookie and storage practices may change as site features, analytics, advertising, or security tools change. This page should be reviewed when those systems are added or materially updated.