What happens to the numbers you enter — in short, nothing leaves your device
The numbers you enter into any calculator on this site never leave your device. Every calculator runs as plain JavaScript in your own browser — there's no server processing your inputs, no database storing them, and nothing to sell.
This site uses Cloudflare Web Analytics to see, in aggregate, how many people visit and which pages they use. It does not use cookies, does not track you individually across sites, and does not have access to anything you type into a calculator — it only sees that a page was visited, not what you did on it.
There's no signup on this site, so there's no account data, no email address, and no personal information collected or stored by using any calculator here.