Privacy Policy
Last updated: September 3, 2026
Calculator Suite is a free, hobby-built collection of calculators. This page explains what happens to your data when you use it, in plain language.
Information this site collects
Calculator Suite has no backend server, no user accounts, and no forms that submit anywhere. Every calculation runs entirely in your browser using JavaScript - nothing you type into a calculator is sent to us or stored on any server.
A few preferences are saved directly in your browser's local storage, purely for convenience, and never leave your device: your chosen language, any calculators you mark as favorites, and a short list of recently used calculators. If this site is installed as an app (via its offline/PWA support), your browser also caches its files locally so it keeps working without a connection.
Advertising and cookies
This site may display advertisements served by Google AdSense. Google and its partners may use cookies and similar technologies to serve ads based on your prior visits to this or other websites, and to measure ad performance. You can read about how Google uses this data at policies.google.com/technologies/ads.
This site does not itself set any advertising or tracking cookies - any such cookies come from Google or its advertising partners, under their own policies, not ours.
Your choices
You can opt out of personalized advertising, or see which companies are serving you ads, at Google's own Ads Settings: adssettings.google.com. You can also opt out of some third-party vendors' use of cookies for personalized advertising at aboutads.info/choices. If you're located somewhere that legally requires it (such as the EEA or UK), this site may also show an on-site cookie/ad-consent banner, letting you manage your preferences directly.
You can clear the local preferences described above at any time by clearing your browser's site data for this page.
Google's own policies
For more detail on how Google collects and uses data across its services, including advertising, see Google's Privacy Policy and Terms of Service.
Children's privacy
This site is not directed at children under 13, and we do not knowingly collect personal information from them. Since this site itself collects no personal information from anyone, this mainly concerns the third-party advertising described above.
Changes to this policy
This policy may be updated occasionally, for example as advertising or site features change. Check back here for the current version - the "last updated" date above will reflect any changes.
Questions
If you have questions about this policy, please open an issue on GitHub.