Cookie Policy
Optional Analytics stays off until you allow it.
What this policy covers
This policy explains cookies, local storage, session storage, service-worker caches, and similar browser technologies used when you visit Calculator24. A cookie is a small value associated with a website; local storage and caches remain in the browser without being sent automatically with every request.
Storage used by Calculator24
| Category | Purpose | Optional? | Duration |
|---|---|---|---|
| Consent choice | Remembers whether Analytics is allowed and which notice version you answered. | No | Until changed, cleared, or the notice version changes |
| Theme and text size | Applies the display choices you request. | No | Until changed or cleared |
| Favorites | Keeps calculators you explicitly save on this device. | No | Until removed or cleared |
| Offline cache | Stores public site files so the calculator shell can load reliably. | No | Replaced when Calculator24 publishes a new cache version |
| Google Analytics 4 | Measures aggregate page use and interactions after permission. | Yes | Controlled by Google Analytics and your browser settings |
Google Analytics
The Google Analytics tag is blocked until you accept Analytics. If allowed, Google may create identifiers such as _ga and process device, page, interaction, and approximate-location information. Calculator24 configures Analytics with advertising signals and ad personalization disabled. Rejecting optional storage keeps the tag from loading on later pages.
Cloudflare
Cloudflare provides hosting, delivery, security, and performance measurement. Cloudflare may use strictly necessary cookies for security features when those features apply. Its Web Analytics service measures performance without cookies and does not track an individual across unrelated websites.
Advertising cookies
Calculator24 does not currently load Google AdSense or other advertising tags. Before advertising is introduced, this policy and the consent controls must be updated. Where Google requires it, advertising consent will use a Google-certified consent management platform rather than this site-level Analytics control alone. See the Advertising Disclosure.
Change or remove your choice
You can also remove stored data through your browser's privacy or site-data settings. Blocking essential storage may prevent Calculator24 from remembering theme, favorites, or your consent decision, but calculation inputs and results remain available.