Privacy Policy

Your values stay on your device

Every calculation runs in your browser. The numbers you type or paste, including batch lists, are never sent to us or to anyone else.

Copying a result, sharing a link and downloading a CSV happen only when you choose to.

Share links

A share link keeps the value after the # in the address (for example #v=24000&u=btuh). Browsers don't send that part to the server.

Page views

We count page views with Cloudflare Web Analytics, which doesn't use cookies, and Google Analytics, which does. Google Analytics shows us which pages people visit and how they use them. Neither receives the values you enter.

What's stored on your device

Google Analytics sets cookies that tell one visit from another. Your browser's local storage keeps two preferences: light or dark theme, and the number of decimal places. Clearing this site's data removes them; the site works without them.

Hosting

The site is served by Cloudflare, which handles the network requests needed to deliver its pages.