Privacy policy

Last updated Oct 3, 2026.

What we collect

Calculator inputs. The numbers and text you enter into our tools are processed in your browser. They are not sent to our server and we do not store them.

Contact form. If you write to us, we receive what you type, including your email address if you provide one. We use it only to read and answer your message. Forms are processed by our hosting provider, Netlify.

Visit statistics. We use GoatCounter, a privacy-friendly analytics service, to count visits and see which pages are popular. It does not use cookies, does not follow you across sites and does not build a profile of you. It records basic details such as the page viewed, the referring site, browser type and country.

Advertising

If we show ads, they will be provided by Google AdSense. Google and its partners may use cookies to serve ads based on your visits to this and other sites. You can manage ad personalization in your Google account's ad settings or at aboutads.info. Where required, we will ask for your consent before ads that use cookies are shown.

Cookies and local storage

We use your browser's local storage only to remember that you dismissed the notice at the bottom of the page. You can clear it any time in your browser settings.

Third-party links

We link to official and third-party sites, which have their own privacy practices.

Your choices

To ask about information you sent us, use the contact form.