Privacy Policy

A short, honest account of the limited data this site touches.

What is stored on your device

Your recent calculations and a couple of preferences (precision mode, cookie-notice acknowledgement) are kept in your browser's local storage. They never leave your device and you can clear them with the button on any calculator page or by clearing site data.

Analytics

We use Google Analytics to understand which tools are useful, which sets cookies and collects aggregated, non-identifying usage data. You can opt out with the Google Analytics opt-out add-on or by blocking cookies.

Advertising

If advertising is enabled, ad partners such as Google AdSense may set cookies to serve and measure ads. See our cookie policy and advertising policy for detail and controls.

Your choices

You can block or delete cookies in your browser and still use every calculator; the tools run entirely in your browser and do not require an account.