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Privacy

The short version

These calculators run entirely in your browser. The numbers you type are never sent to a server, stored or shared — close the tab and they are gone.

What is collected

Standard web-server logs (pages visited, browser type, approximate region) are used only to understand which tools are useful. If advertising is enabled on this site in future, ad partners may use cookies to serve and measure ads; this page will be updated before that happens, and controls required by your region will be provided.

Contact

Privacy questions go to the same address as corrections — see the contact page.