Privacy

The calculator runs in your browser and does not send the numbers you enter to the server. This site sets no cookies, runs no third-party analytics and shows no ads. Hosting (Cloudflare Pages) produces standard server logs outside our control.

A share link carries your numbers after the # sign in the address. Browsers do not send that part of an address to the server. Anyone you give the link to can see the numbers.

Older share links put the numbers after a question mark, a part of the address the server receives when the link is opened. The page still opens them and moves the numbers after the # sign.