What cookies are
Cookies are small files or identifiers stored by a browser or device. Similar technologies include local storage, pixels, tags, SDKs, and device identifiers. They help websites operate, remember preferences, measure performance, and support advertising.
Types of cookies we may use
- Essential cookies: required for navigation, security, page delivery, load balancing, and core functionality. These cannot be disabled through our preference control because the site would not function correctly without them.
- Performance and analytics cookies: help understand traffic, calculator usage, errors, page speed, and content quality.
- Preference cookies: remember choices such as interface state, recent searches, units, or other settings where supported.
- Advertising cookies: help deliver, measure, limit, or improve advertising and sponsorship experiences where permitted, including cookies set by Google and its advertising partners.
Third-party cookies
Analytics, advertising, security, hosting, or embedded service providers may set cookies according to their own policies. Advertising partners, including Google, may use cookies to serve ads based on visits to this and other websites. Users can manage personalized advertising through browser settings, device settings, Google Ads Settings, or other industry opt-out tools such as the Digital Advertising Alliance's WYO / AdChoices program.
Cookie preference control
You can review and change your cookie preferences at any time using the "Cookie preferences" control in the site footer, which lets you separately enable or disable analytics, advertising, and preference cookies (essential cookies remain on, since the site depends on them). Your choice is stored in your browser and respected on future visits unless you clear your browser storage.
Managing cookies
- Most browsers allow users to block, delete, or limit cookies through browser settings.
- Blocking essential cookies may cause parts of the site to work incorrectly.
- Private browsing modes may reset preferences after a session ends.
- Some privacy laws may provide additional rights to opt out of sale, sharing, targeted advertising, or profiling - see our GDPR and CCPA pages for region-specific detail.
These pages are informational policy documents, not legal advice. Operators should have counsel review final policies before launch, especially for advertising, healthcare, financial, tax, and international privacy compliance.