Privacy Policy

In short: all calculations run entirely in your browser. The values you type are never sent to us and are never stored on a server.

Analytics we use

We use two third-party services to understand how the site is used:

• Google Analytics 4 — counts visits and reports aggregate information such as pages viewed, referring site, approximate country and device type.
• Microsoft Clarity — provides aggregate heatmaps and anonymised session replays so we can see where a layout causes confusion.

Both may set cookies or read a device identifier. Neither receives the values you enter into the calculators, because those never leave your browser.

Advertising

We may display advertising in the future. Advertising partners may use cookies and similar technologies to serve and measure ads, under their own privacy policies.

Your choices

• Block or delete cookies in your browser's privacy settings.
• Use a content blocker or your browser's tracking protection to stop the analytics scripts above from loading.
• Google Analytics opt-out browser add-on: tools.google.com/dlpage/gaoptout

We do not sell or rent personal information.

Children

This site is not directed at children under 13, and we do not knowingly collect information from them.

Questions: reach us via the About page.