Privacy Policy

We do not require you to create an account, sign in, or provide any personal information to use our calculators.

All calculations run entirely in your browser using JavaScript. The values you enter into a calculator are never sent to, stored on, or shared by our servers — they disappear when you close the page.

We use a single functional cookie to remember your preferred language so the site loads in that language on your next visit. This cookie contains only a language code (for example "en" or "es") and no personal information.

We do not use advertising or cross-site tracking cookies.

To deliver the site we load a small number of resources from third-party content delivery networks — for example web fonts and charting libraries. When your browser requests these files, the provider may receive standard technical information such as your IP address and browser type, as described in their own privacy policies.

We do not control and are not responsible for the privacy practices of these third parties.

At present we do not run analytics or display advertising on this site. If we add such services in the future, we will update this policy to describe what is collected and why.

Because calculations happen locally in your browser and we do not store the data you enter, there is no personal calculation data on our servers to be lost or exposed.

Our site is intended for a general audience and is not directed to children. We do not knowingly collect personal information from children.

Since we do not collect personal data, there is generally no personal information for us to access, correct, or delete. If you have any questions about your privacy, please contact us using the details on our Contact page.

We may update this Privacy Policy from time to time. Any changes will be posted on this page with a revised "Last updated" date.