Last updated: September 8, 2026
Biggest Calculator Hub does not require registration to use our calculators. Calculations run in your browser. The values you type are not sent to our servers, are not written into the page address, and are not included in analytics. If you use the “Share” action on a result, we build a link that contains the inputs you entered and show you that list before you copy it. Anyone who opens that link sees those values; the link is not sent to us.
From March 19, 2026 until this update, the site placed calculator inputs in the page address after each calculation. Those addresses were visible to our analytics provider as page paths. This update removes that behavior. We are reviewing the retained analytics data and the deletion controls available to us.
We use Google Analytics to understand how visitors use our site. It receives page paths without query strings, the calculator name and category when you press Calculate, time on site, device type, and general geographic location. It does not receive calculator inputs or results.
We also use TelemetryDeck, a privacy-focused analytics service, to count visitors and sessions. It receives page paths without query strings and which calculator or feature was used, never calculator inputs or results. To tell one visit from another, your browser stores two random identifiers. They contain no personal data and are not derived from anything about you:
td_uid (local storage): a random visitor ID. It stays until you clear your site data.td_sid (session storage): a random session ID. It ends when you close the tab, or after 30 minutes without activity.If your browser blocks storage, the identifiers are kept only in memory for the current page and are discarded when you leave it.
Biggest Calculator Hub uses cookies for analytics and advertising purposes. Our advertising partners may use cookies to serve relevant ads. You can manage your cookie preferences through your browser settings.
We display ads served by Google AdSense to support the free operation of Biggest Calculator Hub. Google uses cookies to serve ads based on your prior visits to this website or other websites. You may opt out of personalized advertising by visiting Google Ads Settings. You can also opt out via the Network Advertising Initiative opt-out page. We do not share personal information with advertisers.
We may use the following third-party services:
We do not collect personal data through our calculators. Saved favorites and recently used tools live in your browser’s local storage and never leave your device. Our site is served over HTTPS.
We may update this privacy policy from time to time. Any changes will be posted on this page with an updated revision date.
If you have any questions about this privacy policy, please contact us at hello@biggestcalculatorhub.com.