Privacy Policy
Short version: calculators run without accounts, and nothing you type is stored on our servers beyond standard web logs.
What we collect
Web server logs (IP address, page, time, browser) kept for up to 30 days for security and to rate-limit the API. Calculator inputs are part of the page address and appear only in those logs.
Cookies and consent
If advertising or analytics are enabled, we use Google AdSense and Google Analytics 4. Visitors in the European Economic Area, the UK and Switzerland (and anyone whose location we can't tell) are asked first; neither loads until you accept. Your choice is stored in your browser. You can change it by clearing this site's storage.
Advertising
Google and its partners may use cookies to show ads based on your visits to this and other sites. You can opt out of personalised advertising at Google's Ads Settings.